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Journal articles on the topic 'Linear FEM analyse'

Author: Grafiati

Published: 14 March 2023

Last updated: 31 July 2025

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1

Ptaszny, Jacek, and Marcin Hatłas. "Evaluation of the FMBEM efficiency in the analysis of porous structures." Engineering Computations 35, no. 2 (2018): 843–66. http://dx.doi.org/10.1108/ec-12-2016-0436.

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Purpose The purpose of this paper is to evaluate the efficiency of the fast multipole boundary element method (FMBEM) in the analysis of stress and effective properties of 3D linear elastic structures with cavities. In particular, a comparison between the FMBEM and the finite element method (FEM) is performed in terms of accuracy, model size and computation time. Design/methodology/approach The developed FMBEM uses eight-node Serendipity boundary elements with numerical integration based on the adaptive subdivision of elements. Multipole and local expansions and translations involve solid harm

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2

Wang, Xiang Qiu, Zhi Guo Zhou, and Yu Hong Zhang. "Non-Linear FEM Analysis for the Layered Rock-Mass Tunnel Based on the Twin Shear Strength Criterion." Advanced Materials Research 168-170 (December 2010): 152–55. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.152.

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According to the geotechnical conditions, A FEM model has been established to analyse the mechanical characteristics of the highway tunnel in the layered rock mass. In this model the layered rock mass and the soften joint are simulated by the transversal isotropic material, the interfaces between layers are simulated by the element of rotational Goodman interface, but the interface between the lining structure and surrounding mass is proposed to simulate by an interface element with thickness, and the supporting of tunnel is simulated by the straight beam element. In the meantime, based on the

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Banaś, Krzysztof, Jan Bielański, and Kazimierz Chłoń. "Finite element core calculations and stream processing." Computer Methods in Material Science 16, no. 4 (2016): 213–23. http://dx.doi.org/10.7494/cmms.2016.4.0591.

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We present the execution model and performance analysis for the important phase of finite element calculations, the creation of systems of linear equations. We assume that the process is realized using a set of CPU cores and GPU multiprocessors, with CPU and GPU memories connected using PCIe links for data transfer. We analyse the use of linear data structures that are designed specially for GPU processing. We present the examples of calculations for the standard first order FEM approximation and typical contemporary hardware. We draw the conclusions on the feasibility of the proposed approach

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Akinpelu, Mutiu Adelodun, Bilyamin Adeoye Ibitoye, Samson Olalekan Odeyemi, and Kabir Opeyemi Olorede. "Numerical Verification of Strut and Tie Models and Failure Modes of Reinforced Self-Compacting Concrete Deep Beams." International Journal of Engineering Research in Africa 53 (March 2021): 76–100. http://dx.doi.org/10.4028/www.scientific.net/jera.53.76.

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This study utilized Finite Element Method (FEM) to analyse the structural behaviour and failure modes of Reinforced Self Compacting Concrete (RSCC) deep beams. Eighteen deep beam specimens subjected to four-point loadings were modelled and analyzed using Abaqus modelling tool. Damage plasticity model was used to characterised the nonlinear behaviour of concrete material while linear elastic, linear-plastic-hardening model represented the reinforcing steel material behaviour. The results of the finite model were compared with four different Strut and Tie Models (STMs) using one-way Analysis of

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Șoica, Alexandra, Susana Apostu, and Cristina Pupaza. "Design and Simulation of Mechanical Structures Using FEM (Finite Element Method)." Journal of Research and Innovation for Sustainable Society 7, no. 1 (2025): 126–31. https://doi.org/10.33727/jriss.2025.1.11:126-131.

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This study applies the Finite Element Method (FEM) to analyse the structural behaviour of a cantilever beam subjected to a distributed load. Using aluminium as the beam material (E = 70 GPa, ν = 0.33), a 3D CAD model was developed in SolidWorks and meshed with tetrahedral elements in ANSYS. The analysis involved defining appropriate boundary conditions, where one end was fully fixed, and a uniform force of 500 N/m was applied at the free end. A linear static analysis was performed to evaluate stress distribution, displacement, and strain energy density. Results indicate that stress concentrati

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Maleska, Tomasz, and Damian Beben. "Behaviour of corrugated steel plate bridge with high soil cover under seismic excitation." MATEC Web of Conferences 174 (2018): 04003. http://dx.doi.org/10.1051/matecconf/201817404003.

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The design codes and calculation methods related to the corrugated steel plate (CSP) bridges and culverts say only on the minimum soil height. This value is connected with the bridge span and shell height. In the case of static and dynamic loads (like passing the vehicles), such approach seems to be reasonable. However, it is important to know how the CSP bridges with high the soil covers behave under the seismic loads. This paper is presented the result of numerical study of CSP bridge with different high cover under seismic excitation. The analysed CSP railway bridge in the cross section has

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García-Espinosa, Julio, Borja Serván-Camas, and Miguel Calpe-Linares. "High Fidelity Hydroelastic Analysis Using Modal Matrix Reduction." Journal of Marine Science and Engineering 11, no. 6 (2023): 1168. http://dx.doi.org/10.3390/jmse11061168.

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Structural assessment is a main concern when designing and operating any sort of offshore structure. This assessment is meant to ensure that the structural integrity is preserved along the lifespan of the asset, withstanding the worst sea-states that will be encountered and making sure that the accumulated fatigue damage will not jeopardize its structural integrity neither. The purpose of this paper is to present a fast and reliable hydroelastic model. This model is based on time-domain tight-coupling of a three-dimensional FEM (finite element method) linear structural model and a three-dimens

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Plaitano, Francesco, Aurel Stratan, and Elide Nastri. "Simplified Modelling of Failure in High Strength Bolts under Combined Tension and Bending." Journal of Composites Science 6, no. 10 (2022): 302. http://dx.doi.org/10.3390/jcs6100302.

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Bolted connections are widely adopted in steel structures and their behaviour affects to a large extent the global response of the system. High-strength bolts of type HV are commonly employed. Under pure tension, these bolt assemblies usually fail by thread stripping. However, it was observed experimentally that, under combined tension and bending, the failure mode changes to fracture of the shank. The former loading condition commonly occurs in the case of thick extended end plate connections and the latter in the case of flush end plates. In order to analyse the behaviour of the structure, t

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9

Calderon Arenas, Jose Antonio. "Axisymmetric modelling of transient thermal response in solids for application to infrared photothermal radiometry technique." Revista Mexicana de Física 65, no. 1 (2018): 54. http://dx.doi.org/10.31349/revmexfis.65.54.

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To induce temperature changes on the sample surface by the incidence of a monochromatic modulated light beam and detect the changes produced in the thermal radiation emission is the basic principle of the infrared photothermal radiometry technique. Until now, in order to analyze the thermal response mathematical models based in an one-dimensional model were used considering a sample with a finite thickness and an infinite incidence surface, as well as, the linear approximation of the Stefan-Boltzmann Law in the calculus of the heat losses due to thermal radiation. In this work, analytical and

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10

Devaud, Denis. "Petrov–Galerkin space-time hp-approximation of parabolic equations in H1/2." IMA Journal of Numerical Analysis 40, no. 4 (2019): 2717–45. http://dx.doi.org/10.1093/imanum/drz036.

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Abstract We analyse a class of variational space-time discretizations for a broad class of initial boundary value problems for linear, parabolic evolution equations. The space-time variational formulation is based on fractional Sobolev spaces of order $1/2$ and the Riemann–Liouville derivative of order $1/2$ with respect to the temporal variable. It accommodates general, conforming space discretizations and naturally accommodates discretization of infinite horizon evolution problems. We prove an inf-sup condition for $hp$-time semidiscretizations with an explicit expression of stable test func

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11

HLADÍK, I., M. B. REED, and G. SWOBODA. "ROBUST PRECONDITIONERS FOR LINEAR ELASTICITY FEM ANALYSES." International Journal for Numerical Methods in Engineering 40, no. 11 (1997): 2109–27. http://dx.doi.org/10.1002/(sici)1097-0207(19970615)40:11<2109::aid-nme163>3.0.co;2-1.

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Ummidi, Mohan Satish Kumar* C. H. Vinod Kumar. "NONLINEAR BEHAVIOUR OF CYLINDRICAL WALL OF GROUND ELEVATED EMPTY RC SILO UNDER WIND LOAD." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 12 (2016): 339–45. https://doi.org/10.5281/zenodo.199563.

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Nonlinear analysis of civil structures gives as an analyst’s tool and entered the practicalworld of design engineering. Most FEA applications undertaken by design engineers were limited to linear analysis.It has been demonstrated that the ultimate strengths of some typical two-story planar frames (under gravity loads) determined by inelastic analysis are 10–30% higher than those estimated from the first-hinge elastic approach. Design of silos using the nonlinear analysis has described in this thesis. In this thesis it has shown that nonlinear analysis of two models i.e., Model 2.3 and Model 2.

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Różyło, P. "Experimental-numerical test of open section composite columns stability subjected to axial compression." Archives of Materials Science and Engineering 84, no. 2 (2017): 58–64. http://dx.doi.org/10.5604/01.3001.0010.0979.

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Purpose: The aim of the work was to analyse the critical state of thin-walled composite profiles with top-hat cross section under axial compression. Design/methodology/approach: The purpose of the work was achieved by using known approximation methods in experimental and finite element methods for numerical simulations. The scope of work included an analysis of the behavior of thin-walled composite structures in critical state with respect to numerical studies verified experimentally. Findings: In the presented work were determined the values of critical loads related to the loss of stability

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Ali, Benouis, Zahi Rachid, Moulgada Abdelmadjid, and Djebbar Noureddine. "LINEAR AND NON-LINEAR ANALYSES OF PRESSURE PIPE ELBOWS." Journal of the Serbian Society for Computational Mechanics 17, no. 1 (2023): 71–87. http://dx.doi.org/10.24874/jsscm.2023.17.01.05.

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The introduction of pressure piping increasingly requires the use of efficient materials which must withstand both high hydrostatic pressures, high mechanical loads and high thermal gradients. At nuclear power plants, piping systems are subjected to high pressures (up to 60 MPa). The occurrence of cracks and their possible spread is one of the serious risks in the industry. For this reason, elbows are considered critical components of a piping system. Therefore, in order to design and/or qualify a pipe structurally, it is useful to have a reliable evaluation of their structural behavior under

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15

Zhang, Yunpeng, Dorival M. Pedroso, and Ling Li. "FDM and FEM solutions to linear dynamics of porous media: stabilised, monolithic and fractional schemes." International Journal for Numerical Methods in Engineering 108, no. 6 (2016): 614–45. http://dx.doi.org/10.1002/nme.5231.

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Viale, Nicola, Giulio Ventura, Paulo B. Lourenço, and Javier Ortega. "Linear and non-linear FEM analyses to assess a shear flat-jack test for masonries." Journal of Building Engineering 43 (November 2021): 103169. http://dx.doi.org/10.1016/j.jobe.2021.103169.

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Jyoti, S. Tekavde* Dr. S.S. Angalekar. "NON LINEAR BUCKLING ANALYSIS OF REINFORCED CONCRETE WALL BY USING DIFFERENT PARAMETERS." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 7 (2016): 676–81. https://doi.org/10.5281/zenodo.57156.

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Structural walls are used worldwide to resist gravity and earthquake loads. Buckling of longitudinal bars is one of the types of damage in reinforced concrete (RC) structures subjected to axial compressive loading. The aim is to study non linear buckling behavior of reinforced concrete wall by using finite element model. G+20 storey residential building is analysed by response spectrum method and secondly, the ground structure shear wall is to be analyzed which having maximum axial load for buckling behaviour. This paper investigates effect of several parameters which is affecting to the behav

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Annasiwaththa, Buddhika, and Koichi Oka. "B206 Initial design and FEM analysis of a non-contact power transfer method for magnetically levitated linear slider." Proceedings of the Symposium on the Motion and Vibration Control 2015.14 (2015): 297–301. http://dx.doi.org/10.1299/jsmemovic.2015.14.297.

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19

Chekhov, V. V. "Tensor-based matrices in geometrically non-linear FEM." International Journal for Numerical Methods in Engineering 63, no. 15 (2005): 2086–101. http://dx.doi.org/10.1002/nme.1343.

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20

GHERMAN, Laurian, and Raluca GHICIUC. "Linear electromagnetic accelerator." Safety & Defense 5, no. 2 (2020): 17–21. http://dx.doi.org/10.37105/sd.50.

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Over time, the weapons have been based on mechanical energy (bows, catapults) and chemical energy (guns, missiles), however, at the moment, more and more weapons are designed using electromagnetic energy (railgun, coilgun). The focus of this paper is to obtain the desired muzzle velocities of a projectile according to the existent current. In the first part of the paper, the railgun and coilgun design are presented along with their most important advantages. Based on these observations, a new design of an electromagnetic launch system is presented. Next, Maxwell interactive software package wa

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21

De Luycker, E., D. J. Benson, T. Belytschko, Y. Bazilevs, and M. C. Hsu. "X-FEM in isogeometric analysis for linear fracture mechanics." International Journal for Numerical Methods in Engineering 87, no. 6 (2011): 541–65. http://dx.doi.org/10.1002/nme.3121.

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22

Gunes, Hilal Yazar, Réka Howard, Miguel Fudolig, Joan M. Burke, and Ronald M. Lewis. "PSXIV-18 Fit of the Zero-Inflated Negative Binomial Model to Analyze Fecal Egg Counts." Journal of Animal Science 101, Supplement_3 (2023): 532–33. http://dx.doi.org/10.1093/jas/skad281.626.

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Abstract Fecal egg count (FEC) is used as an indicator of parasite infection level in sheep. The distribution of FEC is non-Gaussian and typically overdispersed, often with an excess in zero counts. Quantifying the extent of inflation of zero counts can be difficult. Our objective was to assess the potential zero-inflation problem in FEC resulting from variation in infection with gastrointestinal nematodes by using a generalized linear model approach. The zero-inflated Poisson (ZIP) and zero-inflated negative binomial (ZINB) models are useful techniques to analyze count data with excess zeros;

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23

Handoko, Johanna, and Foek Tjong Wong. "Adaptive mesh refinements for analyses of 2D linear elasticity problems using the Kriging-based finite element method." E3S Web of Conferences 429 (2023): 05004. http://dx.doi.org/10.1051/e3sconf/202342905004.

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Finite element analyses of irregular structures require adaptive mesh refinement to achieve more accurate results in an efficient manner. This is also true for a non-conventional finite element method with Kriging interpolation, called the Kriging-based finite element method (K-FEM). This paper presents a study of automatic adaptive meshing procedures for analyses of two-dimensional linear elasticity problems using the K-FEM. The Matlab Partial Differential Equation Toolbox was utilized for generating meshes with Delaunay triangulation. Three error indicators, namely, the strain energy error,

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24

Staneva, Nelly, Yancho Genchev, and Desislava Hristodorova. "Strength Investigation of an Upholstered Furniture Frame with Side Plates of PB, OSB and PLY by Finite Element Method." Drvna industrija 71, no. 3 (2020): 253–59. http://dx.doi.org/10.5552/drvind.2020.1921.

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Comparative analysis of the strength characteristics of one-seat upholstered furniture frame with rails of Pinus Sylvestris L. and side plates of PB, OSB and PLY boards was carried out. 3D geometric model of the upholstered furniture frame was created by Autodesk Inventor Pro®. Linear static analyses were carried out by the method of finite elements (FEM) simulating light-service loading. The orthotropic material characteristics of the used materials were considered in the analyses. Two variants of corner joints in the frame (model A – staples and PVAc; model B - staples, PVAc and strengthenin

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25

Ferretti, Patrich, Gian Maria Santi, Christian Leon-Cardenas, Elena Fusari, Giampiero Donnici, and Leonardo Frizziero. "Representative Volume Element (RVE) Analysis for Mechanical Characterization of Fused Deposition Modeled Components." Polymers 13, no. 20 (2021): 3555. http://dx.doi.org/10.3390/polym13203555.

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Additive manufacturing processes have evolved considerably in the past years, growing into a wide range of products through the use of different materials depending on its application sectors. Nevertheless, the fused deposition modelling (FDM) technique has proven to be an economically feasible process turning additive manufacture technologies from consumer production into a mainstream manufacturing technique. Current advances in the finite element method (FEM) and the computer-aided engineering (CAE) technology are unable to study three-dimensional (3D) printed models, since the final result

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Barrientos, Mauricio A., Gabriel N. Gatica, and Matthias Maischak. "A posteriorierror estimates for linear exterior problemsviamixed-FEM and DtN mappings." ESAIM: Mathematical Modelling and Numerical Analysis 36, no. 2 (2002): 241–72. http://dx.doi.org/10.1051/m2an:2002011.

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27

Bringmann, P., C. Carstensen, and G. Starke. "An Adaptive Least-Squares FEM for Linear Elasticity with Optimal Convergence Rates." SIAM Journal on Numerical Analysis 56, no. 1 (2018): 428–47. http://dx.doi.org/10.1137/16m1083797.

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Zhao, Jun, Li Jun Wang, and Dan Ying Gao. "Non-Linear FEM Analysis of Steel Fiber Reinforced Concrete Shearwall." Advanced Materials Research 163-167 (December 2010): 1551–54. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.1551.

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The numerical simulation by nonfinear finite element method(FEM) was adopted to analyze the behavior and the influences of the fraction of steel fiber by volume fraction and the strength of steel fiber reinforced concrete on the bearing capacity and the ductility of reinforced concrete shearwalls. The results show that with the increase of the fraction of steel fiber by volume fraction, the bearing capacity and ductility coefficient of steel fiber reinforced concrete shearwalls increase gradually. With the increase of the strength of steel fiber reinforced concrete, the bearing capacity and du

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Koleva, Miglena. "FINITE ELEMENT SOLUTION OF BOUNDARY VALUE PROBLEMS WITH NONLOCAL JUMP CONDITIONS." Mathematical Modelling and Analysis 13, no. 3 (2008): 383–400. http://dx.doi.org/10.3846/1392-6292.2008.13.383-400.

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We consider stationary linear problems on non‐connected layers with distinct material properties. Well posedness and the maximum principle (MP) for the differential problems are proved. A version of the finite element method (FEM) is used for discretization of the continuous problems. Also, the MP and convergence for the discrete solutions are established. An efficient algorithm for solution of the FEM algebraic equations is proposed. Numerical experiments for linear and nonlinear problems are discussed.

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Aziz, Dalal Ismael, and Ahmed J. Hussein. "Weak galerkin finite element method for the linear Schrodinger equation." Journal of Interdisciplinary Mathematics 26, no. 5 (2023): 919–23. http://dx.doi.org/10.47974/jim-1529.

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The numerical technique for 2D time dependent linear Schrodinger equation is the subject of this work. The approximations are produced using the weak Galerkin finite element technique with continous and discrete FEM, on relay , using the backward Euler method in time. Using the elliptic projection operator, we provide L2 error speculation for continues and discretely weak Galerkin finite element.

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Perrella, Michele, Pasquale Franciosa, and Salvatore Gerbino. "FEM and BEM Stress Analysis of Mandibular Bone Surrounding a Dental Implant." Open Mechanical Engineering Journal 9, no. 1 (2015): 282–92. http://dx.doi.org/10.2174/1874155x01509010282.

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In the present work the structural behaviour of a mandible with a dental implant, considering a unilateral occlusion, is numerically analysed by means of the Finite Element Method (FEM) and the Boundary Element Method (BEM). The mandible, whose CAD model was obtained by computer tomography scans, is considered as completely edentulous and only modelled in the zone surrounding the implant. The material behaviour of bone is assumed as isotropic linear elastic or, alternatively, as orthotropic linear elastic. With reference to the degree of osteo-integration between the implant and the mandibular

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Ming, F. R., A. M. Zhang, and S. P. Wang. "Smoothed Particle Hydrodynamics for the Linear and Nonlinear Analyses of Elastoplastic Damage and Fracture of Shell." International Journal of Applied Mechanics 07, no. 02 (2015): 1550032. http://dx.doi.org/10.1142/s1758825115500325.

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It is a troublesome and focused problem of solid mechanics to solve shell structures with Smoothed particle hydrodynamics (SPH), which is a fully meshfree method. In this paper, an integral model of SPH shell is proposed to more accurately capture the nonlinear strain along the thickness direction. Though the idea is similar to the "Gaussian integral point" in Finite element method (FEM), it is absent and just the first presentation in SPH. Furthermore, focusing on the metal materials, a high-efficiency iteration algorithm for plasticity is derived and the plastic damage theory of Lemaitre–Cha

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Santini, Silvia, Carlo Baggio, Valerio Sabbatini, and Claudio Sebastiani. "Seismic Assessment of Roman Concrete Groin Vaults through UAV, NDT and 3D Analyses." Heritage 5, no. 1 (2022): 311–31. http://dx.doi.org/10.3390/heritage5010017.

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In Roman Baths, the Romans employed barrel and groin vaults of great dimensions, with maximum span more than 20 m; simple tools of structural analysis of ancient wide span vaulted halls are still lacking, due to geometrical and material complexity. In this paper, we study the collapse behavior, under horizontal static action, of a corner cross vault of the Baths of Diocletian in Rome (Hall I). Two methods of analysis are here used: non-linear incremental finite element and limit analysis. In both cases, 3D models have been developed by means of UAV inspection, NDT measures, and AVT monitoring.

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Lua, Yuan Jie, and Robert H. Sues. "Probabilistic Finite-Element Analysis of Airfield Pavements." Transportation Research Record: Journal of the Transportation Research Board 1540, no. 1 (1996): 29–38. http://dx.doi.org/10.1177/0361198196154000105.

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Mechanistic pavement analysis and design based on either layered elastic analysis (LEA) or the finite element method (FEM) is increasingly being used to replace the empirical design process. The simplifying assumptions of a uniform, homogeneous layer of linear material used in LEA can render its analysis inaccurate for real pavement structures. The FEM is more attractive for structural analysis of pavements; the generality of the FEM also allows both the use of comprehensive material models and modeling of the spatial variability that exists in pavement systems. To date, spatial variability an

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Nadal, E., J. J. Ródenas, J. Albelda, M. Tur, J. E. Tarancón, and F. J. Fuenmayor. "Efficient Finite Element Methodology Based on Cartesian Grids: Application to Structural Shape Optimization." Abstract and Applied Analysis 2013 (2013): 1–19. http://dx.doi.org/10.1155/2013/953786.

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This work presents an analysis methodology based on the use of the Finite Element Method (FEM) nowadays considered one of the main numerical tools for solving Boundary Value Problems (BVPs). The proposed methodology, so-called cg-FEM (Cartesian grid FEM), has been implemented for fast and accurate numerical analysis of 2D linear elasticity problems. The traditional FEM uses geometry-conforming meshes; however, in cg-FEM the analysis mesh is not conformal to the geometry. This allows for defining very efficient mesh generation techniques and using a robust integration procedure, to accurately i

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Barbieri, Tommaso. "On Kolmogorov Fokker Planck operators with linear drift and time dependent measurable coefficients." Mathematics in Engineering 6, no. 2 (2024): 238–60. http://dx.doi.org/10.3934/mine.2024011.

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<abstract><p>We prove the well-posedness of a Cauchy problem of the kind:</p> <p><disp-formula> <label/> <tex-math id="FE1"> \begin{document}$ \left\{\begin{array}{@{}l@{}c} \mathcal{L}u = f, &amp; \text{ in }D'(\mathbb{R}^N\times(0,+\infty)),\\ u(x,0) = g(x),&amp;\forall x\in\mathbb{R}^N, \end{array}\right. $\end{document} </tex-math></disp-formula></p> <p>where $ f $ is Dini continuous in space and measurable in time and $ g $ satisfies suitable regularity properties. The operator $ \mathcal{L} $ is the degenerate Kolm

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Gong, Z. X., Y. B. Chai, and W. Li. "Coupled Analysis of Structural–Acoustic Problems Using the Cell-Based Smoothed Three-Node Mindlin Plate Element." International Journal of Computational Methods 13, no. 02 (2016): 1640007. http://dx.doi.org/10.1142/s0219876216400077.

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The cell-based smoothed finite element method (CS-FEM) using the original three-node Mindlin plate element (MIN3) has recently established competitive advantages for analysis of solid mechanics problems. The three-node configuration of the MIN3 is achieved from the initial, complete quadratic deflection via ‘continuous’ shear edge constraints. In this paper, the proposed CS-FEM-MIN3 is firstly combined with the face-based smoothed finite element method (FS-FEM) to extend the range of application to analyze acoustic fluid–structure interaction problems. As both the CS-FEM and FS-FEM are based o

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Chen, Jie, Hai Wang, and Jie Wang. "Buckling and vibration analyses of composite laminates with weak interfaces by a coupled meshfree and finite element method." Science and Engineering of Composite Materials 23, no. 1 (2016): 93–105. http://dx.doi.org/10.1515/secm-2014-0102.

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AbstractBuckling and free vibration analyses for composite laminates with weak interfaces were performed based on a three-dimensional hybrid semianalytical model. The model was established by coupling the radial point interpolation method and finite element method (FEM) in a Hamilton system. A direct coupling approach was developed based on the FEM background cell algorithm, and a modified Hamiltonian function for buckling analysis of rectangular laminated plates was given. The governing equations were deduced with the transfer matrix technique and a general linear spring layer model based on

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He, Xiao Cong. "Comparisons of Linear and Nonlinear FEA of Adhesively Bonded Beams." Advanced Materials Research 1088 (February 2015): 763–68. http://dx.doi.org/10.4028/www.scientific.net/amr.1088.763.

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The effect of boundary conditions on the stress distributions in single-lap adhesively bonded cantilevered beams has been investigated using the three-dimensional linear static and non-linear quasi-static finite element method. The displacement obtained from the linear static and the non-linear quasi-static analyses are compared under the same deformation scale factor for three typical boundary conditions. The analysis results indicate that there are significant differences between the linear static and non-linear quasi-static analyses only if there are significant bending effect on the bonded

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Beuchler, Sven, and Martin Purrucker. "Schwarz Type Solvers for -FEM Discretizations of Mixed Problems." Computational Methods in Applied Mathematics 12, no. 4 (2012): 369–90. http://dx.doi.org/10.2478/cmam-2012-0030.

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AbstractThis paper investigates the discretization of mixed variational formulation as, e.g., the Stokes problem by means of the hp-version of the finite element method. The system of linear algebraic equations is solved by the preconditioned Bramble-Pasciak conjugate gradient method. The development of an efficient preconditioner requires three ingredients, a preconditioner related to the components of the velocity modes, a preconditioner for the Schur complement related to the components of the pressure modes and a discrezation by a stable finite element pair which satisfies the discrete inf

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Thiago, de Sousa Batista, de Araujo Santos Jacinto Moises, Henrique Costa Coelho Filho Marcos, Wendel de Jesus Peixoto Viana Saymo, and Rafael Nunes e. Silva Albuquerque Paulo. "Checking the Load Capacity of Reinforced Concrete Corbel Through Elastic-Linear Numerical Analyses with Finite Element Modeling." International Journal of Advances in Engineering and Technology 17, no. 3 (2024): 218–28. https://doi.org/10.5281/zenodo.12778773.

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<em>Short and very short corbels are commonly used as beam-column connection of precast, metallic, or composite concrete structures. Since the assumptions of beam theory does not apply in some of their regions, their analysis and design need to be meticulously performed, requiring the use of a strut-and-tie model or a friction-shear model. Due to the continuous technological advancement, it is possible to describe the behavior of these elements through structural analysis software. Therefore, the present study aims to compare the results of the computational analysis of one of the corbels test

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Becker, Roland, Michael Innerberger, and Dirk Praetorius. "Adaptive FEM for Parameter-Errors in Elliptic Linear-Quadratic Parameter Estimation Problems." SIAM Journal on Numerical Analysis 60, no. 3 (2022): 1450–71. http://dx.doi.org/10.1137/21m1458077.

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Syrkin, Ilya. "Linear Synchronous Motor Model." MATEC Web of Conferences 297 (2019): 02006. http://dx.doi.org/10.1051/matecconf/201929702006.

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Liner synchronous motor (LSM) is perspective motor for milling machines and other manufacturing equipment such as 3D printers, laser cutting and engraving machines, etc. Some different construction of LSM can be found. The LSM with permanent magnets is modeled in this paper. Comsol Multiphysics is used for finite element model of LSM. Motor stator is built using rear earth magnets N52, an anchor consists of 6 teeth with 3-phase winding. Large cogging force is the problem of LSM, so there is task to reduce this force. This task can be solved by motor geometry optimization. Geometric parameter o

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XU, X., G. R. LIU, Y. T. GU, and G. Y. ZHANG. "A CONFORMING POINT INTERPOLATION METHOD (CPIM) BY SHAPE FUNCTION RECONSTRUCTION FOR ELASTICITY PROBLEMS." International Journal of Computational Methods 07, no. 03 (2010): 369–95. http://dx.doi.org/10.1142/s0219876210002295.

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A conforming point interpolation method (CPIM) is proposed based on the Galerkin formulation for 2D mechanics problems using triangular background cells. A technique for reconstructing the PIM shape functions is proposed to create a continuous displacement field over the whole problem domain, which guarantees the CPIM passing the standard patch test. We prove theoretically the existence and uniqueness of the CPIM solution, and conduct detailed analyses on the convergence rate; computational efficiency and band width of the stiffness matrix of CPIM. The CPIM does not introduce any additional de

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Meloni, Daniel, and Barbara de Nicolo. "Non Linear Fem Modelling for the Design of Openings in Masonry Walls." Key Engineering Materials 747 (July 2017): 44–51. http://dx.doi.org/10.4028/www.scientific.net/kem.747.44.

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Countries like Italy have to face the constant issue of preserving and renewing existing buildings, both for the sake of conservation of the architectural and monumental heritage and due to the need of requalification and reuse. Considering the seismic hazard of most of Italian regions, structural interventions need to be carefully evaluated since National Codes don’t allow any sort of weakening of buildings and conversely regard any structural intervention as an opportunity to improve existing building safety. Most of existing and historical buildings in Italy are masonry structures, whose fu

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Hidayah, Aisyah Putri, and Siti Rahmawati. "Effect of Leadership Style on the Performance of Student Organization Management." Management Journal of Binaniaga 7, no. 2 (2022): 105–18. http://dx.doi.org/10.33062/mjb.v7i2.3.

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The Student Executive Board of the Faculty of Economics and Management, Bogor Agricultural University (BEM FEM IPB) is a faculty-level organization that has succeeded in making achievements as a Healthy Student Organization at the IPB Appreciation Week event for two consecutive years, namely 2020 and 2021. Based on the results of research conducted by BEM FEM IPB to students of the Faculty of Economics and Management found that the performance of organizational management was not good enough and there were gaps in the results of performance assessments between departments in BEM FEM IPB. This

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Novák, Josef. "FEM Analysis of Piezoelectric Resonator Polarization Process." Applied Sciences 11, no. 24 (2021): 12045. http://dx.doi.org/10.3390/app112412045.

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The polarization of the piezoelectric resonator depends on the direction of the applied electric field. The direction of the applied electric field is determined by the shape of the resonator and the position of the electrodes. In case of resonators with electrodes incompletely covering their bases, an inhomogeneous electric field is generated, which results in an inhomogeneous polarization of the resonator. The resonator will be polarized in some places either in a direction other than the desired one or not polarized at all. The aim of this work is to analyze the polarization process on reso

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Chen, Tao, and Hua Dong He. "Finite Element Analysis of a Steel Spiral Staircase with Multiple Supports." Advanced Materials Research 255-260 (May 2011): 1964–67. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.1964.

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This paper presents finite element analyses of a steel spiral staircase with multiple supports. The complex geometries were modeled using commercial finite element method (FEM) software. Linear elastic analyses were carried out to investigate its deformation and moment distribution. Besides these, mode analysis was also performed to explore its pedestrian comfort. Finally the reliability of the structure is proved.

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Soares Jr, D., O. von Estorff, and W. J. Mansur. "Efficient non-linear solid-fluid interaction analysis by an iterative BEM/FEM coupling." International Journal for Numerical Methods in Engineering 64, no. 11 (2005): 1416–31. http://dx.doi.org/10.1002/nme.1408.

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Legrain, G., N. Moës, and E. Verron. "Robust and direct evaluation ofJ2in linear elastic fracture mechanics with the X-FEM." International Journal for Numerical Methods in Engineering 76, no. 10 (2008): 1471–88. http://dx.doi.org/10.1002/nme.2366.

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