Journal articles: 'Finite element analysis of composites using Abaqus'

1

Pulngern, T., K. Preecha, Narongrit Sombatsompop, and V. Rosarpitak. "Finite Element Simulation for Creep Response of Strengthened Wood/PVC Composite." Advanced Materials Research 747 (August 2013): 261–64. http://dx.doi.org/10.4028/www.scientific.net/amr.747.261.

Full text

Abstract:

This paper investigates the finite element simulation to predict the creep response of Wood/PVC (WPVC) composite members before and after strengthening by using high carbon steel (HCS) flat bar strip adhered to the tension side. The creep parameters based on power law models of WPVC composites and the HCS flat bars were determined experimentally. Then, the nonlinear finite element analysis (FEA) software of ABAQUS was applied to predict the creep behaviors of composite members using the obtained experimentally creep parameters of individual component of WPVC composites and HCS flat bars. Good correlation between finite element simulation and experimental results are obtained for all cases. ABAQUS software with power law creep model show good potential for prediction the creep response of WPVC composites before and after strengthening.

APA, Harvard, Vancouver, ISO, and other styles

2

Wang, Xiao Qiang, Wei Tao Zhao, Bo Fang, and Ye Wei Zhang. "Finite Element Analysis of Influence of Nanoparticle on Hybrid Composites Reinforced by Fiber and Nanoparticle." Advanced Materials Research 1033-1034 (October 2014): 892–95. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.892.

Full text

Abstract:

In order to improve the strength and toughness of materials, nanoparticle is always embedded into epoxy resin and fiber composite materials. The influence of the number, distribution and mechanical property of nanoparticle arranged around the fiber on fiber reinforced composites is evaluated in this paper. A finite element analysis under a tensile load is performed by using commercial finite element software named as ABAQUS. Both the stress contour and progressive damage failure mode of the representative volume element (RVE) model of fiber reinforced composites are obtained. A series of computational experimental results indicate that both the space geometry property and mechanical property of nanoparticle have a significant effect on the stiffness and strength properties of these composite materials.

APA, Harvard, Vancouver, ISO, and other styles

3

Hassouna, Amira, Slah Mzali, Farhat Zemzemi, and Salah Mezlini. "Orthogonal cutting of UD-CFRP using multiscale analysis: Finite element modeling." Journal of Composite Materials 54, no. 18 (January 9, 2020): 2505–18. http://dx.doi.org/10.1177/0021998319899129.

Full text

Abstract:

Unsuitable surface quality is frequently observed in the machining of composites due to their heterogeneity and anisotropic properties. Thus, minimizing the machining damages requires a thorough understanding of the machining process. In this study, two different finite element models were developed using Abaqus/Explicit to simulate the cutting process of unidirectional carbon fiber-reinforced polymer: (i) a macromechanical model based on the homogenization approach and (ii) a micromechanical model in which the composite constituents were treated separately. The effects of CFRP mechanical properties, the energy of breaking and hourglass control were analyzed using a macromechanical model. The results revealed that CFRP properties and the numerical parameters highly influenced the cutting process. A comparative study was also performed between the macromechanical and the micromechanical models to study the mechanisms of chip formation. It was demonstrated that the material removal mechanisms for both models are in good agreement with the experimental observations for different fiber orientation angles.

APA, Harvard, Vancouver, ISO, and other styles

4

Tang, Chak Yin, Chi Pong Tsui, Da Zhu Chen, P. S. Uskoković, Jian Ping Fan, Xiao Lin Xie, and Eric Wai Ming Lee. "Damage Analysis of Particulate Polymer Composites Based Structure by Using Micro-Meso-Macro Finite Element Approach." Materials Science Forum 532-533 (December 2006): 648–52. http://dx.doi.org/10.4028/www.scientific.net/msf.532-533.648.

Full text

Abstract:

A micro-meso-macro finite element approach has been developed for simulating the macro-scale damage coupled deformation in a particulate polymer composite (PPC) based structure under tension. A damage model for the PPC structure was developed to define the debonding damage behavior of the structure. The computational results determined in our previous studies by using finite element meso-cell modeling technique were used as the input parameters of the damage model and definition of the constitutive behavior of PPC. A user-defined subroutine VUMAT describing the damage-coupled constitutive behaviour of PPC for defining the material properties of the finite elements for the structure was then built and incorporated into the ABAQUS finite element code. A case example has been given to demonstrate the proposed approach. The macroscale damage process in the simulated component was found to be reasonable.

APA, Harvard, Vancouver, ISO, and other styles

5

Lazhar, Derradji, Maalem Toufik, Merzouki Tarek, and Messai Abderraouf. "Solid strain based finite element implemented in ABAQUS for static and dynamic plate analysis." Engineering Solid Mechanics 9, no. 4 (2021): 449–60. http://dx.doi.org/10.5267/j.esm.2021.5.001.

Full text

Abstract:

An existing robust three dimensional finite element based on the strain approach is presented. This element is implemented, for the first time in the commercial computer code ABAQUS, by using the subroutine (UEL), for the static and dynamic analysis of isotropic plates, whatever thin or thick. It is Baptised SBH8 (Strain Based Hexahedral with 8 nodes) and has the advantage to overcome the problems involved in numerical locking, when the thickness of the plate tends towards the smallest values. The implementation is justified by the capacities broader than offers this code, especially, in the free frequencies computation. The results obtained by the present element are better than those given by elements used by ABAQUS code and the other elements found in the literature, having the same number of nodes.

APA, Harvard, Vancouver, ISO, and other styles

6

Pan, Wei Dong, Ren Guo Gu, Ke Zhu, and Yong Gang Lv. "Finite Element Analysis about the Properties of CFG-Pile Composite Foundation Based on Parametric Language PYTHON." Advanced Materials Research 320 (August 2011): 20–25. http://dx.doi.org/10.4028/www.scientific.net/amr.320.20.

Full text

Abstract:

As an international general finite element analysis software, ABAQUS has super nonlinear analysis function and is playing an increasingly important role in the numerical calculation analysis of geotechnical engineering structures. CAE module of its own provides a certain amount of convenience for the beginners, but it is inadequate in the face of more complex geotechnical engineering problems. Based on parametric language PYTHON, using its modular model code, bypassing the CAE module, the ABAQUS finite element analysis calculated and analyzed the influence of ER on the CFG pile composite foundation settlement and pile side friction. Finite element analysis and the results show that: the process of ABAQUS finite element analysis, which is based on the parameter language PYTHON, is simple and has very high computational efficiency and accuracy in the analysis complex geotechnical engineering problems.

APA, Harvard, Vancouver, ISO, and other styles

7

Liao, BB, and PF Liu. "Finite element analysis of dynamic progressive failure properties of GLARE hybrid laminates under low-velocity impact." Journal of Composite Materials 52, no. 10 (August 10, 2017): 1317–30. http://dx.doi.org/10.1177/0021998317724216.

Full text

Abstract:

This paper aims to study dynamic progressive failure properties of glass fiber composite/aluminium hybrid laminates under low-velocity impact. Intralaminar damage models using Puck failure criteria and strain-based damage evolution laws for composite layers are implemented by developing finite element codes using ABAQUS-VUMAT (user dynamic material subroutine), the interface delamination is simulated by bilinear cohesive model in ABAQUS and the mechanical properties of aluminium layers are described using the Johnson-Cook model. Effects of different layer thickness and impact energy on the impact force–time/displacement curves of glass fiber composite/aluminium laminates under low-velocity impact are discussed. Besides, damage evolution behaviors of matrix and delamination interface are explored. Finally, energy dissipation mechanisms due to intralaminar dynamic progressive failure, interlaminar delamination of composite layers and plastic deformation of aluminium layers are studied. Relatively good agreement is obtained between experimental and numerical results.

APA, Harvard, Vancouver, ISO, and other styles

8

Ramezani, Mohammad Kazem, S. M. Mohseni Shakib, and H. Soltani. "Numerical Analysis of Delamination Growth in Laminated Composites under Buckling Behavior." Advanced Materials Research 433-440 (January 2012): 379–84. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.379.

Full text

Abstract:

In this paper, a delamination growth analysis on composite panel containing embedded delamination has been performed using a three-dimensional finite element model. The effects of the delamination on the local buckling load and delamination growth are studied by using Hashin’s 3D failure criteria via UMAT user’s subroutine of ABAQUS FE program. A new proposed model shows enhancement of the accuracy of the results which showed a good agreement with available experimental data.

APA, Harvard, Vancouver, ISO, and other styles

9

Bakhshan, Hadi, Ali Afrouzian, Hamed Ahmadi, and Mehrnoosh Taghavimehr. "Progressive failure analysis of fiber-reinforced laminated composites containing a hole." International Journal of Damage Mechanics 27, no. 7 (June 9, 2017): 963–78. http://dx.doi.org/10.1177/1056789517715088.

Full text

Abstract:

The present work aims to obtain failure loads for open-hole unidirectional composite plates under tensile loading. For this purpose, a user-defined material model in the finite element analysis package, ABAQUS, was developed to predict the failure load of the open-hole composite laminates using progressive failure analysis. Hashin and modified Yamanda-Sun’s failure criteria with complete and Camanho’s material degradation model are studied. In order to achieve the most accurate predictions, the influence of failure criteria and property degradation rules are investigated and failure loads and failure modes of the composites are compared with the same experimental test results from literature. A good agreement between experimental results and numerical predictions was observed.

APA, Harvard, Vancouver, ISO, and other styles

10

Strecker, Kurt, Carlos Augusto da Silva, and Sérgio Luiz Moni Ribeiro Filho. "Experimental and Numerical Analysis of Cement Based Composite Materials with Styrofoam Inclusions." Open Construction and Building Technology Journal 10, no. 1 (June 28, 2016): 431–41. http://dx.doi.org/10.2174/1874836801610010431.

Full text

Abstract:

In civil engineering an increasing demand for lightweight concretes exists, because a lower density results in significant benefits for structural elements. Polystyrene foams may be used in the fabrication of lightweight concretes with a large density range. In this work, the influence of fine grained sand (<1mm) additions of 5, 10 and 20% on the properties of a composite consisted of cement with styrofoam inclusions of 20, 40 and 60% has been studied. Finite element analysis (FEA), using Abaqus software package, was carried out to predict numerically the effect of particle size and polystyrene fraction on the compressive strength of the composite materials. The composites were characterized by their density, porosity and compressive strength after 28 days. The density of the composites varied between 1250 and 1600 kg/m3 with a strength of 18 and 9 MPa for 20 and 60% of Styrofoam inclusions, respectively. The increase of the fraction of sand from 5 to 20% promoted the increase in bulk density and modulus of the composites. The effect of the addition of sand on the porosity and mechanical strength exhibited variation indicating the packing factor of the particles as the main responsible for this behavior. Based on the finite element analysis the amount of the stress in the composite increases with the increasing particle diameter. The composites investigated exhibited a uniform distribution of the polystyrene spheres, allowing their use for non-structural purposes.

APA, Harvard, Vancouver, ISO, and other styles

11

Reiner, Johannes, Martin Veidt, Matthew Dargusch, and Lutz Gross. "A progressive analysis of matrix cracking-induced delamination in composite laminates using an advanced phantom node method." Journal of Composite Materials 51, no. 20 (December 22, 2016): 2933–47. http://dx.doi.org/10.1177/0021998316684203.

Full text

Abstract:

Matrix cracking-induced delamination in composite laminates is qualitatively and quantitatively investigated in a finite element framework. The phantom node method is extended to incorporate breakable interfaces at transverse matrix crack tips. New user-defined element types in Abaqus improve the numerical stability in a geometrically nonlinear analysis. The new formulation allows for accurate prediction of matrix crack density and stiffness reduction in a number of composite laminates. Furthermore, the advanced phantom node method is able to simulate progressive matrix cracking-induced delamination with good accuracy.

APA, Harvard, Vancouver, ISO, and other styles

12

Siddiqui, Muhammad Owais Raza, and Danmei Sun. "Development of plug-ins to predict effective thermal conductivity of woven and microencapsulated phase change composite." Journal of Composite Materials 51, no. 6 (July 28, 2016): 733–43. http://dx.doi.org/10.1177/0021998316655202.

Full text

Abstract:

The thermal property of textile structures plays an important role in the understanding of thermal behaviour of the clothing. In this work, user-friendly GUI plug-ins have been developed to generate both microscopic and mesoscopic scale models for finite element analysis. The plug-ins were developed by using Abaqus/CAE as a platform. The GUI Plug-ins enable automatic model generation and prediction of the effective thermal conductivity of woven composite and microencapsulated Phase Change Materials composites via finite element analysis by applying boundary conditions. The predicted effective thermal conductivities from plug-ins have been compared with the results obtained from published experimental research work based on an established mathematical model. They are correlated well. Moreover, the influence of phase change materials on heat transfer behaviour of microencapsulated Phase Change Materials composites was further analysed.

APA, Harvard, Vancouver, ISO, and other styles

13

Zhang, Bo Ming, and Lin Zhao. "Progressive Damage and Failure Analysis of Fiber-Reinforced Laminated Composites Containing a Hole." Advanced Materials Research 314-316 (August 2011): 2243–52. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.2243.

Full text

Abstract:

A progressive damage and failure model for fiber reinforced laminated composites is developed in combination of finite element procedure and micromechanical model based on a unit cell. The micromechanical model can be used to evaluate failure criteria at the micro-level with fiber and matrix material properties. Once either of the constituents has damaged, the corresponding material properties are degraded by the damage factor. The micromechanical model and the damage theory are implemented in the finite software ABAQUS by using the user material subroutine UMAT and VUMAT, to model the damage progression and compute the ultimate strength of the composite laminates containing a hole. The predicted strengths for this model is compared with the experimental results, and a well agreement in the simulation and experimental resulted is revealed.

APA, Harvard, Vancouver, ISO, and other styles

14

Wang, Huai Wen, Hong Wei Ji, Ying Sun, and Hui Miao. "Discussion on Convergence Issues in ABAQUS/Standard while Carrying Out Damage and Fracture Analysis." Advanced Materials Research 189-193 (February 2011): 2247–50. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.2247.

Full text

Abstract:

As a universal finite element method commercial software, ABAQUS has been widely used in scientific research and engineering applications. However, convergence difficulties are familiar issues while carrying out damage and fracture analysis. Several methods, which are helpful to avoid these convergence problems, are presented in this paper. Baseline simulations about damage initiation and propagation in composites indicate that a larger value of viscous regularization causes the peak of the reaction force to be higher. A smaller viscosity parameter is better than bigger one. Other advanced techniques, include using automatic stabilization and customized general solution controls, are adoptable to improve convergence in ABAQUS/Standard analysis. The results of the paper are expected to provide guidance for the new user of ABAQUS.

APA, Harvard, Vancouver, ISO, and other styles

15

Khalili, Ashkan, Ratneshwar Jha, and Dulip Samaratunga. "The Wavelet Spectral Finite Element-based user-defined element in Abaqus for wave propagation in one-dimensional composite structures." SIMULATION 93, no. 5 (January 23, 2017): 397–408. http://dx.doi.org/10.1177/0037549716687377.

Full text

Abstract:

A Wavelet Spectral Finite Element (WSFE)-based user-defined element (UEL) is formulated and implemented in Abaqus (commercial finite element software) for wave propagation analysis in one-dimensional composite structures. The WSFE method is based on the first-order shear deformation theory to yield accurate and computationally efficient results for high-frequency wave motion. The frequency domain formulation of the WSFE leads to complex-valued parameters, which are decoupled into real and imaginary parts and presented to Abaqus as real values. The final solution is obtained by forming a complex value using the real number solutions given by Abaqus. Four numerical examples are presented in this article, namely an undamaged beam, a beam with impact damage, a beam with a delamination, and a truss structure. A multi-point constraint subroutine, defining the connectivity between nodes, is developed for modeling the delamination in a beam. Wave motions predicted by the UEL correlate very well with Abaqus simulations. The developed UEL largely retains the computational efficiency of the WSFE method and extends its ability to model complex features.

APA, Harvard, Vancouver, ISO, and other styles

16

Abdul-Latif, Ainullotfi, Mohd Hasrizam Che Man, and S. Mansor. "Inclusion of Strain-Rate Effects in Low Velocity Impact Simulation of Laminated Composites." Applied Mechanics and Materials 465-466 (December 2013): 1395–99. http://dx.doi.org/10.4028/www.scientific.net/amm.465-466.1395.

Full text

Abstract:

Composite materials are widely used in aircraft, automotive, marine and railway applications and are exposed to impact loads, in particular low velocity impact. As material properties of composites are affected by strain-rate [, finite element analysis (FEA) by using static properties would not predict their impact behaviour accurately. Thus, the objective of this study was to include strain-rate effects in the simulation of composite laminates under low velocity impact. This was achieved using ABAQUS anisotropic damage model (ADM) by taking account of material properties changes as a function of log strain-rate using user-defined ABAQUS/VUSDFLD subroutine Strain-Rate Dependent ADM (SRD ADM). Results obtained from SRD ADM were validated using simple tensile test done by Okoli [. Subsequently a three-point bending impact event of a simple composite laminate beam by a cylindrical steel impactor was simulated using both the original ABAQUS Static ADM and the user-defined SRD ADM, and compared with experimental impact test results done by [. The results show that reductions in errors of predicted maximum impact reaction force (compared to experimental data) were achieved from 29% using Static ADM to 14% using SRD ADM and from 35% using Static ADM to 15% using SRD ADM respectively for impactor speeds of 2 ms-1 and 5 ms-1.

APA, Harvard, Vancouver, ISO, and other styles

17

Wang, Zhen Qing, Song Zhou, Jian Sheng Zhou, and Xiao Di Wu. "Failure Analysis of Bolted Composite Joint Based on Extended Finite Element." Key Engineering Materials 488-489 (September 2011): 771–74. http://dx.doi.org/10.4028/www.scientific.net/kem.488-489.771.

Full text

Abstract:

In this paper, the influence of geometrical parameters on failure load of bolted single-lap composite joint was investigated. The composite laminate was manufactured from HTA/6376, a high-strength carbon fiber–epoxy material currently used in primary structures in the European aircraft industry. Two geometrical parameters which were plate width-to-hole diameter ratio (W/D), and the edge-to-hole diameter ratio (E/D) were analyzed. To avoid modeling each ply of the laminates discretely, the laminates were modeled using equivalent linear elastic properties. the failure analysis was modeled by Extend Finite Element Method (XFEM) in ABAQUS. Maximum principal stress criterion (Maxps) was used to determine the failure load.

APA, Harvard, Vancouver, ISO, and other styles

18

Wu, Hui Ge, Ji Hua Chen, and Jie Gu. "Influence of the Opening’s Position on Seismic Performance of Autoclaved Aerated Concrete Composite Wall with Core Columns." Advanced Materials Research 446-449 (January 2012): 767–70. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.767.

Full text

Abstract:

To study the seismic performance of autoclaved aerated concrete (AAC) block masonry composite wall with reinforced concrete (RC) columns, a non-linear finite element analysis has been carried out for the walls with openings using the finite element software ABAQUS. First results of finite element analysis were verified with experiment results of full-scale specimen. And then the effect of the opening’s position on seismic performance was studied with finite element analysis. The result indicates that the ultimate load capacity and ultimate displacement are both increased with the upward and outward movement of the openings.

APA, Harvard, Vancouver, ISO, and other styles

19

Boudounit, Hicham, Mostapha Tarfaoui, Dennoun Saifaoui, and Mourad Nachtane. "Structural analysis of offshore wind turbine blades using finite element method." Wind Engineering 44, no. 2 (May 23, 2019): 168–80. http://dx.doi.org/10.1177/0309524x19849830.

Full text

Abstract:

Wind energy is one among the most promising renewable energy sources, and hence there is fast growth of wind energy farm implantation over the last decade, which is expected to be even faster in the coming years. Wind turbine blades are complex structures considering the different scientific fields involved in their study. Indeed, the study of blade performance involves fluid mechanics (aerodynamic study), solids mechanics (the nature of materials, the type of solicitations …), and the fluid coupling structure (IFS). The scope of the present work is to investigate the mechanical performances and structural integrity of a large offshore wind turbine blade under critical loads using blade element momentum. The resulting pressure was applied to the blade by the use of a user subroutine “DLOAD” implemented in ABAQUS finite element analysis software. The main objective is to identify and predict the zones which are sensitive to damage and failure as well as to evaluate the potential of composite materials (carbon fiber and glass fiber) and their effect on reduction of rotor’s weight, as well as the increase of resistance to wear, and stiffness.

APA, Harvard, Vancouver, ISO, and other styles

20

Selver, Erdem, Gaye Kaya, and Hussein Dalfi. "Experimental and theoretical study of sandwich composites with Z-pins under quasi-static compression loading." Advances in Structural Engineering 24, no. 12 (May 4, 2021): 2720–34. http://dx.doi.org/10.1177/13694332211007399.

Full text

Abstract:

This study aims to enhance the compressive properties of sandwich composites containing extruded polystyrene (XPS) foam core and glass or carbon face materials by using carbon/vinyl ester and glass/vinyl ester composite Z-pins. The composite pins were inserted into foam cores at two different densities (15 and 30 mm). Compression test results showed that compressive strength, modulus and loads of the sandwich composites significantly increased after using composite Z-pins. Sandwich composites with 15 mm pin densities exhibited higher compressive properties than that of 30 mm pin densities. The pin type played a critical role whilst carbon pin reinforced sandwich composites had higher compressive properties compared to glass pin reinforced sandwich composites. Finite element analysis (FE) using Abaqus software has been established in this study to verify the experimental results. Experimental and numerical results based on the capabilities of the sandwich composites to capture the mechanical behaviour and the damage failure modes were conducted and showed a good agreement between them.

APA, Harvard, Vancouver, ISO, and other styles

21

Ahn, Hyunchul, Nicholas E. Kuuttila, and Farhang Pourboghrat. "Mechanical analysis of thermo-hydroforming of a fiber-reinforced thermoplastic composite helmet using preferred fiber orientation model." Journal of Composite Materials 52, no. 23 (March 7, 2018): 3183–98. http://dx.doi.org/10.1177/0021998318762547.

Full text

Abstract:

The composite thermo-hydroforming process, utilizing heated and pressurized fluid, was used to form an advanced helmet with the Spectra Shield. Experimental results obtained from the forming process show that thermo-hydroforming is a feasible process for manufacturing thermoplastic composite materials. Concurrent to the forming experiments, the forming process was numerically modeled using ABAQUS/CAE. The behavior of the fiber reinforced polymer composite was modeled using the Preferred Fiber Orientation model, which was implemented into the explicit finite element code ABAQUS by writing a User Material Subroutine. The preferred fiber orientation model was further adapted to work with a composite laminate consisting of multiple layers. Numerical results were compared with experimental data to validate the method in terms of predicting the deformed geometry of the multilayer composite, wrinkling, as well as the punch force–displacement curve. Overall, the deformed shape of the fiber-reinforced thermoplastic composite helmet, including the distribution of wrinkles were predicted accurately.

APA, Harvard, Vancouver, ISO, and other styles

22

Hart, Robert J., and OI Zhupanska. "Influence of low-velocity impact-induced delamination on electrical resistance in carbon fiber-reinforced composite laminates." Journal of Composite Materials 52, no. 25 (May 15, 2018): 3461–70. http://dx.doi.org/10.1177/0021998318776361.

Full text

Abstract:

In this paper, experiments have been performed and finite element models have been developed for studying the influence of low-velocity impact damage on the four-probe electrical resistance of carbon fiber-reinforced polymer matrix laminates. Sixteen-ply and 32-ply AS4/3501-6 laminates with quasi-isotropic layup were analyzed. Electrical resistance was evaluated using a four-step procedure. First, finite element models were created in Abaqus Finite Element Analysis (FEA) for simulating low-velocity impact using a quasi-static loading approach. Second, matrix rupture in the inside plies was evaluated, and delamination analysis was performed at the corresponding interfaces to determine delamination patterns. Third, four-probe electrical finite element models were developed in Abaqus FEA for specimens before and after impact using the concept of effective conducting thickness and the delamination patterns obtained from the delamination analysis. Effects of the low-velocity impact delamination on four-probe top and oblique electrical resistance were studied. Electrical resistance predictions were compared to the experimental data. Both top and oblique resistance planes were sensitive to presence of delamination with the oblique resistance measurement being more sensitive as compared to the top resistance measurement. In addition, the resistance of the 16-ply specimens was more greatly affected by the delamination compared to the 32-ply specimens. The proposed analysis can be utilized for design of carbon fiber-reinforced polymer matrix composites with optimized damage sensing capabilities.

APA, Harvard, Vancouver, ISO, and other styles

23

Shi, Y., and C. Soutis. "A finite element analysis of impact damage in composite laminates." Aeronautical Journal 116, no. 1186 (December 2012): 1331–47. http://dx.doi.org/10.1017/s0001924000007661.

Full text

Abstract:

AbstractIn this work, stress-based and fracture mechanics criteria were developed to predict initiation and evolution, respectively, of intra- and inter-laminar cracking developed in composite laminates subjected to low velocity impact. The Soutis shear stress-strain semi-empirical model was used to describe the nonlinear shear behaviour of the composite. The damage model was implemented in the finite element (FE) code (Abaqus/Explicit) by a user-defined material subroutine (VUMAT). Delamination (or inter-laminar cracking) was modelled using interface cohesive elements and the splitting and transverse matrix cracks that appeared within individual plies were also simulated by inserting cohesive elements between neighbouring elements parallel to the fibre direction in each single layer. A good agreement was obtained when compared the numerically predicted results to experimentally obtained curves of impact force and absorbed energy versus time. A non-destructive technique (NDT), penetrant enhanced X-ray radiography, was used to observe the various damage mechanisms induced by impact. It has been shown that the proposed damage model can successfully capture the internal damage pattern and the extent to which it was developed in these carbon fibre/epoxy composite laminates.

APA, Harvard, Vancouver, ISO, and other styles

24

Zhang, Guosong, Changhui Mao, Jian Wang, Ning Fan, and Tiantian Guo. "Numerical Analysis and Experimental Studies on the Residual Stress of W/2024Al Composites." Materials 12, no. 17 (August 27, 2019): 2746. http://dx.doi.org/10.3390/ma12172746.

Full text

Abstract:

W/2024Al composites can be used for radiation shielding with desirable mechanical properties such as high strength, excellent corrosion resistance, and low density. The quench-induced residual stresses in W/2024Al composites were studied by experimental measurements and numerical analysis using ABAQUS software. Due to the accurate calculation of heat transfer coefficients and the established constitutive equation for description of the variation of yield stress at elevated temperature with different strain rates, the prediction of residual stresses in as-quenched composite blocks achieved by finite element method (FEM) is reliable. Moreover, X-ray diffraction and crack-compliance method were carried out to measure the stresses that developed at the surface and interior of the composites to validate the simulation results. Quenching residual stresses of composite blocks were investigated by taking the influence of quenching medium temperature into consideration. In addition, a comparative study on residual stress magnitudes of as-quenched 2024Al and W/2024Al composites was conducted, and the results show that stress magnitudes of W/2024Al composites are lower than that of 2024Al due to lower thermal gradients during the quenching process.

APA, Harvard, Vancouver, ISO, and other styles

25

Huang, Jun, Shao Bin Dai, and Ji Xiong Liu. "Finite Element Analysis of Earthquake Resistance Behaviors in L-Shaped Concrete-Filled Rectangular Composite Steel Tubular Columns." Advanced Materials Research 368-373 (October 2011): 441–47. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.441.

Full text

Abstract:

By using finite element software ABAQUS, the nonlinear finite element analysis of earthquake resistance behavior of L-shaped concrete-filled rectangular composite steel tubular columns is carried out, furthermore, the analysis results and the corresponding experimental results are compared. The results indicate that the finite element calculated value of ultimate bearing capacity is less than experimental value; axial compression ratio of the specimen has little affect on its ultimate bearing capacity and earthquake resistance behaviors; the results of FEM analysis can match the experiment results better, and thus, it can better reflect the earthquake resistance behaviors of the specimens.

APA, Harvard, Vancouver, ISO, and other styles

26

Shi, Qi Yin, Yi Tao Ge, Li Lin Cao, and Zhao Chang Zhang. "Nonlinear Finite Element Analysis of Steel-Encased Composite Continuous Beams with High Strength Materials." Advanced Materials Research 648 (January 2013): 59–62. http://dx.doi.org/10.4028/www.scientific.net/amr.648.59.

Full text

Abstract:

In this study, based on the test of the high strength materials of steel-encased concrete composite continuous beam, the ultimate flexural capacity of 8 composite continuous beams are analyzed by using the finite element analysis software ABAQUS. Numerical results show that it is a very good agreement for the load-deflection curves which obtained by finite element method (FEM) and those by the test results, and the error control is less than 8.5%. When selecting and utilizing appropriate cyclic constitutive model, element model and failure criterion of high strength steel and high strength concrete, the accuracy of the calculation can be improved better.

APA, Harvard, Vancouver, ISO, and other styles

27

Cai, De Yong, Fu Jun Liu, Xiao Hu Yin, and Fu Hong Chen. "Reliability Optimization Design of Composite Transmission Shaft." Applied Mechanics and Materials 576 (June 2014): 69–73. http://dx.doi.org/10.4028/www.scientific.net/amm.576.69.

Full text

Abstract:

In order to solve reliability-based optimization design of composite transmission shaft, the parametric finite element model of composite transmission shaft was built by secondary development of ABAQUS. The reliability analysis of composite transmission shaft was carried out with the first order reliability method (FORM). Using python language, the finite element program and reliability analysis program are combined. The reliability-based optimization model of composite transmission shaft was obtained. The feasibility and effectiveness of the optimization model was verified by the results of an example application.

APA, Harvard, Vancouver, ISO, and other styles

28

Wu, Hui Ge, Xiu Ling Cao, Jie Gu, and Yan Zhao. "Effect of Vertical Stress on Seismic Performance of Autoclaved Aerated Concrete Block Composite Walls with a Door Opening." Advanced Materials Research 531 (June 2012): 634–37. http://dx.doi.org/10.4028/www.scientific.net/amr.531.634.

Full text

Abstract:

Non-linear analysis of autoclaved aerated concrete (AAC) block masonry composite walls with a door opening was conducted with finite element software ABAQUS in order to study its seismic performance. The finite element results were firstly verified with laboratory results and then the effects of vertical stress on seismic performance of the wall was investigated using finite element analysis. This study indicates that seismic performance can be improved with the increase of vertical stress; however, the effect of vertical stress on ultimate load is less than that on the displacement under ultimate load.

APA, Harvard, Vancouver, ISO, and other styles

29

Huang, Jun, Yi Chao Zhang, and Shao Bin Dai. "Finite Element Analysis of Earthquake Resistance Behaviors of T-Shaped Concrete-Filled Rectangular Composite Steel Tubular Columns." Applied Mechanics and Materials 501-504 (January 2014): 1633–38. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.1633.

Full text

Abstract:

By using finite element software ABAQUS, the nonlinear finite element analysis of earthquake resistance behavior of T-shaped concrete-filled rectangular composite steel tubular columns is carried out, furthermore, the analysis results and the corresponding experiment results are compared. The results indicate that the calculated value of ultimate bearing capacity is less than the experimental value, and the results of FEM analysis can match the experiment results better, and thus, it can better reflect the earthquake resistance behaviors of the specimens.

APA, Harvard, Vancouver, ISO, and other styles

30

Fenner, Patrick, Andrew Watson, and Carol Featherston. "Modelling Infinite Length Panels Using the Finite Element Method." International Journal of Structural Stability and Dynamics 16, no. 07 (August 3, 2016): 1750038. http://dx.doi.org/10.1142/s0219455417500389.

Full text

Abstract:

This paper compares three finite element models for determining the buckling and post-buckling performance of infinite length thin walled composite and metal stiffened panels — such as for modeling theoretical aircraft upper wing skin panels — namely single bay, double half-bay and quad half-bay models. The quad half-bay model is shown to be the ideal model as all wavelengths of buckling are permitted. This model gives an accurate estimate of postbuckling behavior that can include advanced behavior such as mode jumping or collapse while the single bay and double half-bay models are more restrictive and do not allow for accurate mode jumping to take place. Sample panels are analyzed for buckling performance using the computer program VICONOPT, which assumes an infinite length structure based on exact strip theory. This analysis is then compared to results from the quad half-bay FEM model, using the Abaqus solver, where the two models are in good agreement for the initial buckling performance for both the metal and composite panels. Buckling prediction for the quad half-bay model is within [Formula: see text] for the critical buckling mode, and within [Formula: see text] of all compared modes; and postbuckling performance compares well with the results of previous investigation of the same sample panel geometry.

APA, Harvard, Vancouver, ISO, and other styles

31

Feng, Ou Yang, Chen Fang, Hai Long Huang, and Ning Zhuang. "Dynamic Simulation of High-Pile Wharf Slab under Action of Irregular Waves." Applied Mechanics and Materials 353-356 (August 2013): 2688–92. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.2688.

Full text

Abstract:

The dynamic responses of single wharf slab and whole high-pile wharf structure is studied in modal analysis by 3D finite element model using software ABAQUS. According to the static force calculation module and the transient dynamics module of the ABAQUS finite element calculation, the displacement of wharf slab central point is calculated according to the effects of static force, slow variation, and the uplift pressure from both the shock and composite wave. Then the effects of wave force frequency impacting on the structure dynamic response is researched by the different high-frequency waves. These analysis results provide scientific basis and technical guidance for the high-pile wharf dynamic research in port engineering.

APA, Harvard, Vancouver, ISO, and other styles

32

Silva, P. C., L. P. Moreira, M. F. R. P. Alves, L. Q. B. Campos, B. G. Simba, and C. dos Santos. "Experimental analysis and finite element modeling of the piston-on-three balls testing of Y-TZP ceramic." Cerâmica 66, no. 377 (March 2020): 30–42. http://dx.doi.org/10.1590/0366-69132020663772784.

Full text

Abstract:

Abstract The objectives of this study were to characterize and evaluate the physical and mechanical properties of an experimental zirconia for dental application and compare the biaxial flexural strength results with the finite element simulation (FEM). Yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) ceramic samples were sintered at 1475 °C/2 h and characterized by X-ray diffraction, scanning electron microscopy, relative density, flexural strength using piston-on-three balls (P-3B) test and Young’s modulus. From the flexural strength results, numerical simulations were performed using Abaqus software. The complete model used 70216 elements, considering the components of the test. The results indicated full densification of sintered samples, ZrO2-tetragonal and ZrO2-cubic as crystalline phases, and average grain size of 0.6±0.2 μm. Mechanical characterization of sintered samples indicated Young’s modulus of 195±4 GPa, flexural strength of 1191±9 MPa and Weibull modulus m=16.3. FEM simulation indicated a flexural strength close to 1100 MPa, with a difference lower than 7% in relation to the experimental results. The results were compared associating the physical and mechanical properties of Y-TZP with its intrinsic phenomena such as tgm transformation and ferroelastic domain.

APA, Harvard, Vancouver, ISO, and other styles

33

Cao, Xiu Ling, Hui Ge Wu, Xi Zhen Wang, and Yan Zhao. "Effect of Door Opening’s Size and Position on Seismic Performance of Autoclaved Aerated Concrete Block Composite Walls." Advanced Materials Research 531 (June 2012): 539–42. http://dx.doi.org/10.4028/www.scientific.net/amr.531.539.

Full text

Abstract:

Finite element analysis has been performed with software ABAQUS in order to study the effect of door opening’s size and position on seismic performance of autoclaved aerated concrete block composite walls. On the basis of good agreement between finite element results and experimental results, the effect of door opening’s size and position on seismic performance of autoclaved aerated concrete block composite walls has been studied using finite element analysis. This study indicates that with the increase in the door width, the decrease in the wall’s bearing capacity is proportional to the decrease in the wall’s net area; and the change of door’s position has less effect on seismic performance of the composite wall.

APA, Harvard, Vancouver, ISO, and other styles

34

Mohamad, G., Mostapha Tarfaoui, and Volker Bertram. "FEA of Dynamic Behavior of Top Hat Bonded Stiffened Composite Panel." Key Engineering Materials 446 (July 2010): 137–45. http://dx.doi.org/10.4028/www.scientific.net/kem.446.137.

Full text

Abstract:

In this work the dynamic responses of bonded top hat stiffened panel have been studied by using finite element analysis model (Abaqus). A symmetrical 2D model was performed and used in the simulations. In the first part, dynamic behavior and impact speed effects at such composite structure have been studied. In the second part, other simulations were carried out by using cohesive elements proposed to predict the delamination might happen under such loading.

APA, Harvard, Vancouver, ISO, and other styles

35

Majeed, Majed A., Ahmet S. Yigit, and Andreas P. Christoforou. "Modeling and Analysis of Elastoplastic Impacts on Supported Composites." Key Engineering Materials 471-472 (February 2011): 367–72. http://dx.doi.org/10.4028/www.scientific.net/kem.471-472.367.

Full text

Abstract:

This paper presents an elastoplastic impact model for a spherical object impacting a supported composite layer or a half-space. The model utilizes a contact law that has been developed based on elastic-plastic and fully plastic indentation theories. For an impact event, the model parameters can easily be obtained analytically, computationally using Finite Elements (FE), and from experiments, by assuming transversely isotropic material behavior. Simulations are compared to those from a nonlinear FE model developed in ABAQUS, and to limited experimental data, with excellent results.

APA, Harvard, Vancouver, ISO, and other styles

36

Wang, X., M.-Ch Dong, and G. Lu. "Thermal elastic-plastic stress analysis of an anisotropic structure." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 217, no. 7 (July 1, 2003): 723–33. http://dx.doi.org/10.1243/095440603767764381.

Full text

Abstract:

In this paper, a polynomial stress function is utilized to satisfy both the governing differential equation for an anisotropic plane stress problem and the corresponding boundary conditions for plastic deformation. A theoretical solution for the thermal elastic-plastic problem of composite structure is obtained by means of the Tsai-Hill strength theory of anisotropic material. The composite structure is composed of a steel fibre-reinforced aluminium metal-matrix with a linear hardening material property. On the other hand, an elastic-plastic finite element analysis for the same problem is also carried out by using ABAQUS. The theoretical solution is in good agreement with the results from the finite element analysis. Finally, some examples are given and the corresponding results are discussed.

APA, Harvard, Vancouver, ISO, and other styles

37

Liang, Shuangqiang, Chenglong Zhang, Ge Chen, Qihong Zhou, and Frank Ko. "Open-Hole 3D Braided Composites Strength Prediction and Stress Analysis." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 38, no. 4 (August 2020): 889–96. http://dx.doi.org/10.1051/jnwpu/20203840889.

Full text

Abstract:

The stress concentration caused by notches is a common engineering issue for composite structure application. 3D braided composite possess excellent damage tolerance compared to common laminates. The tensile properties of 3D braided composite with open-hole and un-notched were experimentally examined. The mechanic properties of 3D braided composite in other directions are predicted using FGM (Fabric Geometry Model) and finite element analysis. The stress distributions around the hole and perpendicular to the loading direction are analyzed based on Abaqus software. The simulation results were compared with Lekhnitskii's analytical study. The open-hole strength of 3D braided composite was predicted respectively using Average stress failure criteria, Point stress failure criteria (PSC), and also the progressive failure analysis based on different failure criteria. The predicted strength results were compared to the experimental values. The results show the PSC predicted strength matched the experiment, while the progressive failure analysis can predict the failure initiation, propagation and final failure mode.

APA, Harvard, Vancouver, ISO, and other styles

38

Wang, Wen Da, Zhi Feng Guo, and Yan Li Shi. "Finite Element Analysis on Behavior of the Joint with Steel Tube Confined Concrete (STCC) Column to Reinforced Concrete Beam." Advanced Materials Research 243-249 (May 2011): 527–30. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.527.

Full text

Abstract:

The steel tube confined concrete (STCC) column exhibits excellent mechanical performance. A 3-D finite element model (FEM) using ABAQUS was established to simulate the performance of the composite joints with STCC column and RC beam. Accurate material model, rational element type, and solution method were discussed. Some STCC columns and composite joints with concrete-filled steel tubular (CFST) column and STCC column were modeled based on the model, respectively. The results from FEM are good agreement with the test results. The mechanism of the composite joint was investigated based on the FEM.

APA, Harvard, Vancouver, ISO, and other styles

39

Zhu, Yansong, Yueke Ming, Ben Wang, Yugang Duan, Hong Xiao, Chenping Zhang, Jinru Sun, and Xiangyu Tian. "Finite Element Analysis of Lightning Damage Factors Based on Carbon Fiber Reinforced Polymer." Materials 14, no. 18 (September 10, 2021): 5210. http://dx.doi.org/10.3390/ma14185210.

Full text

Abstract:

While carbon-fiber-reinforced polymers (CFRPs) are widely used in the aerospace industry, they are not able to disperse current from lightning strikes because their conductivity is relatively low compared to metallic materials. As such, the undispersed current can cause the vaporization or delamination of the composites, threatening aircraft safety. In this paper, finite element models of lightning damage to CFRPs were established using commercial finite element analysis software, Abaqus, with the user-defined subroutines USDFLD and HEAVEL. The influences of factors such as the structural geometry, laminate sequence, and intrinsic properties of CFRPs on the degree of damage to the composites are further discussed. The results showed that when a current from lightning is applied to the CFRP surface, it mainly disperses along the fiber direction in the outermost layer. As the length of the CFRP increases, the injected current has a longer residence time in the material due to the increased current exporting distance. Consequently, larger amounts of current accumulate on the surface, eventually leading to more severe damage to the CFRP. This damage can be alleviated by increasing the thickness of the CFRP, as the greater overall resistance makes the CFRP a better insulator against the imposed current. This study also found that the damaged area increased as the angle between the first two layers increased, whereas the depth of the damage decreased due to the current dispersion between the first two layers. The analysis of the electrical conductivity of the composite suggested that damage in the fiber direction will be markedly reduced if the conductivity in the vertical fiber direction increases approximately up to the conductivity of the fiber direction. Moreover, increasing the thermal conductivity along the fiber direction will accelerate the heat dissipation process after the lightning strike, but the influence of the improved thermal conductivity on the extent of the lightning damage is less significant than that of the electrical conductivity.

APA, Harvard, Vancouver, ISO, and other styles

40

Zhou, Xiao Yan, Jing Xuan Wang, and Wen Da Wang. "Preliminary Study on Dynamic Progressive Collapse Analysis of Spatial Composite Frames with Concrete-Filled Steel Tubular Columns." Applied Mechanics and Materials 166-169 (May 2012): 164–67. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.164.

Full text

Abstract:

This paper presented a progressive collapse analysis of spatial composite frame with concrete-filled steel tubular (CFST) columns. A typical finite element analysis (FEA) model of a 12-story building was established by using ABAQUS. The shell elements were used to simulate the slab, and all of the steel beams and CFST columns were simulated by the beam elements incorporating nonlinear material and geometric, respectively. Nonlinear dynamic analysis was carried out for the sudden loss of columns for different scenarios of column removal, and the capacity of progressive collapse resistance of the 3-D composite frame and other components internal force around the removed column were investigated.

APA, Harvard, Vancouver, ISO, and other styles

41

Wu, Hui Ge, Jun Zhao, and Jie Gu. "Finite Element Analysis of Vertical Stress's Effect on Seismic Performance of Autoclaved Aerated Concrete Block Masonry Walls." Advanced Materials Research 368-373 (October 2011): 1010–13. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.1010.

Full text

Abstract:

Non-linear analysis of autoclaved aerated concrete (AAC) block masonry composite wall with reinforced concrete (RC) core columns has been conducted using finite element software ABAQUS. First, the numerical results from finite element analysis were verified with laboratory results of full-scale AAC masonry wall specimens. Effects of vertical stress on seismic performance were investigated. The analysis indicates that lateral load capacity of the wall is affected by the openings greatly and increased with the increase of vertical stress. The effect of vertical stress on the wall without openings is more obvious than that with openings.

APA, Harvard, Vancouver, ISO, and other styles

42

Oztoprak, Nahit, Mehmet Deniz Gunes, Metin Tanoglu, Engin Aktas, Oguz Ozgur Egilmez, Ciler Senocak, and Gediz Kulac. "Developing polymer composite-based leaf spring systems for automotive industry." Science and Engineering of Composite Materials 25, no. 6 (November 27, 2018): 1167–76. http://dx.doi.org/10.1515/secm-2016-0335.

Full text

Abstract:

AbstractComposite-based mono-leaf spring systems were designed and manufactured to replace existing mono-leaf metal leaf spring in a light commercial vehicle. In this study, experimentally obtained mechanical properties of different fiber-reinforced polymer materials are presented first, followed by the description of the finite element analytical model created in Abaqus 6.12-1 (Dassault Systemes Simulia Corp., RI, US) using the obtained properties. The results from the finite element analysis are presented next and compared with actual size experimental tests conducted on manufactured prototypes. The results demonstrated that the reinforcement type and orientation dramatically influenced the spring rate. The prototypes showed significant weight reduction of about 80% with improved mechanical properties. The hybrid composite systems can be utilized for composite-based leaf springs with considerable mechanical performance.

APA, Harvard, Vancouver, ISO, and other styles

43

Li, Fengfeng, Liwu Liu, Xin Lan, Tong Wang, Xiangyu Li, Fanlong Chen, Wenfeng Bian, Yanju Liu, and Jinsong Leng. "Modal Analyses of Deployable Truss Structures Based on Shape Memory Polymer Composites." International Journal of Applied Mechanics 08, no. 07 (October 2016): 1640009. http://dx.doi.org/10.1142/s1758825116400093.

Full text

Abstract:

With large spatial deployable antennas used more widely, the stability of deployable antennas is attracting more attention. The form of the support structure is an important factor of the antenna’s natural frequency, which is essential to study to prevent the resonance. The deployable truss structures based on shape memory polymer composites (SMPCs) have made themselves feasible for their unique properties such as highly reliable, low-cost, light weight, and self-deployment without complex mechanical devices compared with conventional deployable masts. This study offers deliverables as follows: an establishment of three-longeron beam and three-longeron truss finite element models by using ABAQUS; calculation of natural frequencies and vibration modes; parameter studies for influence on their dynamic properties; manufacture of a three-longeron truss based on SMPC, and modal test of the three-longeron truss. The results show that modal test and finite element simulation fit well.

APA, Harvard, Vancouver, ISO, and other styles

44

Samborski, Sylwester. "Experimental Verification of Defect’s Influence on Beams’ Dynamics Using Laser Scanning Vibrometry." Solid State Phenomena 240 (August 2015): 36–41. http://dx.doi.org/10.4028/www.scientific.net/ssp.240.36.

Full text

Abstract:

This article presents paper deals with experimental verification of defect’s influence on the beam structures’ eigenfrequency extraction performed numerically with the ABAQUS Finite Element Analysis (FEA) software. The results for beams with defects were compared to those obtained for their undamaged (healthy) counterparts. The beams were made of aluminum and of a laminated glass-epoxy composite. The experiments confirmed the numerical results both quantitatively and qualitatively showing also some differences between the two materials.

APA, Harvard, Vancouver, ISO, and other styles

45

Sharifi, S., Thamir Aunal Deen Mohammed Sheet Almula, Soheil Gohari, G. Sharifishourabi, Yob Saed, and Mohd Yazid Bin Yahya. "Impact Response of Laminated Composite Cylindrical Shell: Finite Element Simulation Approach." Applied Mechanics and Materials 393 (September 2013): 387–92. http://dx.doi.org/10.4028/www.scientific.net/amm.393.387.

Full text

Abstract:

The effect of low velocity impact response on the thin laminated composite cylindrical shell with different stacking sequences was investigated. Finite element simulation using ABAQUS software was the base of the study during the analysis. The framework was to study the stress and displacement in radial and circumferential directions through finite element simulation. For simplicity, an arbitrarily picked circumferential path at where the impactor impacts the shell surface was selected. The graphs plotted based on stress and displacement variables Vs radial and circumferential directions did not show the significant changes for laminations with different stacking sequences. In addition, The 90 degree along circumferential and radial directions was found to be the critical point.

APA, Harvard, Vancouver, ISO, and other styles

46

Alavi, Fatemeh, Amir Hossein Behravesh, Abbas S. Milani, and Davoud Karimi. "On the Effect of Unit-Cell Parameters in Predicting the Elastic Response of Wood-Plastic Composites." Journal of Engineering 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/456398.

Full text

Abstract:

This paper presents a study on the effect of unit-cell geometrical parameters in predicting elastic properties of a typical wood plastic composite (WPC). The ultimate goal was obtaining the optimal values of representative volume element (RVE) parameters to accurately predict the mechanical behavior of the WPC. For each unit cell, defined by a given combination of the above geometrical parameters, finite element simulation in ABAQUS was carried out, and the corresponding stress-strain curve was obtained. A uniaxial test according to ASTM D638-02a type V was performed on the composite specimen. Modulus of elasticity was determined using hyperbolic tangent function, and the results were compared to the sets of finite element analyses. Main effects of RVE parameters and their interactions were demonstrated and discussed, specially regarding the inclusion of two adjacent wood particles within one unit cell of the material. Regression analysis was performed to mathematically model the RVE parameter effects and their interactions over the modulus of elasticity response. The model was finally employed in an optimization analysis to arrive at an optimal set of RVE parameters that minimizes the difference between the predicted and experimental moduli of elasticity.

APA, Harvard, Vancouver, ISO, and other styles

47

Karakaya, Şükrü. "INVESTIGATION OF HYBRID AND DIFFERENT CROSS-SECTION COMPOSITE DISC SPRINGS USING FINITE ELEMENT METHOD." Transactions of the Canadian Society for Mechanical Engineering 36, no. 4 (December 2012): 399–412. http://dx.doi.org/10.1139/tcsme-2012-0028.

Full text

Abstract:

In this study the effectiveness of composite disc springs with different cross-section and hybrid type are determined by taking into account load capacities, masses, hybridization characteristics and costs of composite disc springs. The disc springs are analyzed with ABAQUS finite elements program by compressing between two rigid plates. The load-deflection characteristics obtained as a result of the analysis are compared with the analytic and experimental studies. Then different cross-section and hybrid composite disc springs were modeled. The trapeze A disc spring were confirmed to be more advantageous in terms of load capacity and mass by investigating the modeled disc springs. The effect of hybridization on hybrid disc springs with standard cross-section was investigated and optimum hybrid disc spring was determined according to cost and maximum loading capacity. Consequently, it is determined that carbon/epoxy plies used for outer layers are more advantageous. But the outer ply subjected to force was damaged thus this layer should be particularly reinforced.

APA, Harvard, Vancouver, ISO, and other styles

48

Guo, Zhangxin, Zhonggui Li, Junjie Cui, Yongcun Li, and Yunbo Luan. "The effect of winding patterns on the mechanical behavior of filament-wound cylinder shells." Multidiscipline Modeling in Materials and Structures 16, no. 3 (November 11, 2019): 508–18. http://dx.doi.org/10.1108/mmms-03-2019-0059.

Full text

Abstract:

Purpose The purpose of this paper is to present a finite element analysis (FEA) of filament-wound composites, as well as application of these materials. Design/methodology/approach In this paper, a new finite element method of filament-wound composite is presented. The stress and strain fields in the composite cylinders are analyzed using the ABAQUS software packages for considering the filament undulation and crossover. The paper presented results of buckling load of composite cylinders with different types of filament-winding patterns. Findings The result of the example shows that the stress distributions are uniform along the cylinder length and around the circumference when the analytical approach is based on the conventional FEA. The stress distributions are not uniform along the cylinder length and around the circumference for considering the filament undulation and crossover. The stress units are arranged in a regular geometric pattern around circumference and along the axis of rotation. The analysis of the effect of filament-winding mosaic patterns on the mechanical characteristics of composite cylindrical is presented in the paper. Originality/value The stress and strain fields in the composite cylinders were analyzed for considering the filament undulation and crossover. The buckling load of composite cylinders with different types of filament-winding patterns was presented in this paper.

APA, Harvard, Vancouver, ISO, and other styles

49

Mohammadi, Masoud, and Ali Sadeghi. "Initial and progressive failure analysis of a composite pyramidal lattice cylinder under axial loading: A comparison with experimental results." Journal of Composite Materials 54, no. 30 (July 16, 2020): 4947–57. http://dx.doi.org/10.1177/0021998320942949.

Full text

Abstract:

In this paper, the compressive behavior of a carbon fiber composite pyramidal lattice cylinder has been predicted based on initial failure criteria and progressive damage. To this end, the 3D Hashin failure criteria have been employed with instantaneous and gradual unloading models using the user subroutine UMAT in ABAQUS/Standard. In the gradual unloading model, progressive damage has been controlled by exponential damage function. In addition, a new mold has been designed and manufactured for the experimental test of composite pyramidal lattice cylinders, which allows the use of the maximum essential strength of the fiber-reinforced composite. The predicted load-displacement curves using the finite element models are in good agreement with the experimental test results.

APA, Harvard, Vancouver, ISO, and other styles

50

Sokołowski, Damian, Marcin Kamiński, and Artur Wirowski. "Energy Fluctuations in the Homogenized Hyper-Elastic Particulate Composites with Stochastic Interface Defects." Energies 13, no. 8 (April 17, 2020): 2011. http://dx.doi.org/10.3390/en13082011.

Full text

Abstract:

The principle aim of this study is to analyze deformation energy of hyper-elastic particulate composites, which is the basis for their further probabilistic homogenization. These composites have some uncertain interface defects, which are modelled as small semi-spheres with random radius and with bases positioned on the particle-matrix interface. These defects are smeared into thin layer of the interphase surrounding the reinforcing particle introduced as the third component of this composite. Matrix properties are determined from the experimental tests of Laripur LPR 5020 High Density Polyurethane (HDPU). It is strengthened with the Carbon Black particles of spherical shape. The Arruda–Boyce potential has been selected for numerical experiments as fitting the best stress-strain curves for the matrix behavior. A homogenization procedure is numerically implemented using the cubic Representative Volume Element (RVE). Spherical particle is located centrally, and computations of deformation energy probabilistic characteristics are carried out using the Iterative Stochastic Finite Element Method (ISFEM). This ISFEM is implemented in the algebra system MAPLE 2019 as dual approach based upon the stochastic perturbation method and, independently, upon a classical Monte-Carlo simulation, and uniform uniaxial deformations of this RVE are determined in the system ABAQUS and its 20-noded solid hexahedral finite elements. Computational experiments include initial deterministic numerical error analysis and the basic probabilistic characteristics, i.e., expectations, deviations, skewness and kurtosis of the deformation energy. They are performed for various expected values of the defects volume fraction. We analyze numerically (1) if randomness of homogenized deformation energy can correspond to the normal distribution, (2) how variability of the interface defects volume fraction affects the deterministic and stochastic characteristics of composite deformation energy and (3) whether the stochastic perturbation method is efficient in deformation energy computations (and in FEM analysis) of hyper-elastic media.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Finite element analysis of composites using Abaqus'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles