Journal articles: 'Concrete Damage Plasticity Model'

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Al-Zuhairi, Alaa H., Ali H. Al-Ahmed, Ali A. Abdulhameed, and Ammar N. Hanoon. "Calibration of a New Concrete Damage Plasticity Theoretical Model Based on Experimental Parameters." Civil Engineering Journal 8, no. 2 (February 1, 2022): 225–37. http://dx.doi.org/10.28991/cej-2022-08-02-03.

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The introduction of concrete damage plasticity material models has significantly improved the accuracy with which the concrete structural elements can be predicted in terms of their structural response. Research into this method's accuracy in analyzing complex concrete forms has been limited. A damage model combined with a plasticity model, based on continuum damage mechanics, is recommended for effectively predicting and simulating concrete behaviour. The damage parameters, such as compressive and tensile damages, can be defined to simulate concrete behavior in a damaged-plasticity model accurately. This research aims to propose an analytical model for assessing concrete compressive damage based on stiffness deterioration. The proposed method can determine the damage variables at the start of the loading process, and this variable continues to increase as the load progresses until complete failure. The results obtained using this method were assessed through previous studies, whereas three case studies for concrete specimens and reinforced concrete structural elements (columns and gable beams) were considered. Additionally, finite element models were also developed and verified. The results revealed good agreement in each case. Furthermore, the results show that the proposed method outperforms other methods in terms of damage prediction, particularly when damage is calculated using the stress ratio. Doi: 10.28991/CEJ-2022-08-02-03 Full Text: PDF

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Voyiadjis, George Z., Ziad N. Taqieddin, and Peter I. Kattan. "Anisotropic damage–plasticity model for concrete." International Journal of Plasticity 24, no. 10 (October 2008): 1946–65. http://dx.doi.org/10.1016/j.ijplas.2008.04.002.

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Hafezolghorani, Milad, Farzad Hejazi, Ramin Vaghei, Mohd Saleh Bin Jaafar, and Keyhan Karimzade. "Simplified Damage Plasticity Model for Concrete." Structural Engineering International 27, no. 1 (February 2017): 68–78. http://dx.doi.org/10.2749/101686616x1081.

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Rakić, Dragan M., Aleksandar S. Bodić, Nikola J. Milivojević, Vladimir Lj Dunić, and Miroslav M. Živković. "CONCRETE DAMAGE PLASTICITY MATERIAL MODEL PARAMETERS IDENTIFICATION." Journal of the Serbian Society for Computational Mechanics 15, no. 2 (December 30, 2021): 111–22. http://dx.doi.org/10.24874/jsscm.2021.15.02.11.

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The procedure for identifying concrete damage plasticity material model parameters is presented in this paper. Concrete damage plasticity material model represents a constitutive model which is based on a combination of theory of plasticity and theory of damage mechanics. This material model is often used in solving geotechnical problems due to its realistic description of mechanical behavior of concrete material. Theoretical basis of concrete damage plasticity material model and material parameters identification procedure are presented in this paper. Proposed identification procedure is applied on experimental data from uniaxial compression and tension load-unload tests taken from literature. By applying experimental data, stress-strain curve is created. Based on stress-strain load-unload curve, stress-plastic strain and stress-degradation dependences are created which are necessary for material parameters identification. Using these dependences material parameters are determined. Verification of estimated parameters is performed in PAK software package using concrete damage plasticity material model. Finite element model is created for numerical simulations of uniaxial compression and tension tests. Numerical simulation results are compared with experimental data. By comparing numerical simulation results and experimental data it can be concluded that this procedure is effective for determining concrete damage plasticity model parameters.

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Yang, Ke Jia, Zi Ling Xie, and Wei Li. "Application of RPC Constitutive Model in FEA." Applied Mechanics and Materials 578-579 (July 2014): 25–30. http://dx.doi.org/10.4028/www.scientific.net/amm.578-579.25.

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The damage evolution equation of RPC is established based on 2-parameter Weibull distribution. The constitutive relation of RPC is then calculated based on the damage evolution equation. The constitutive model of RPC is optimized by comparing experimental constitutive curve to models corresponding to different threshold strain. Based on the definition of damage index in ABAQUS, the damaged evolution equation in ABAQUS is recalculated based on the optimized constitutive relation. the concrete damaged plasticity model in ABAQUS is obtained using the aforementioned method. And the concrete damaged plasticity model is applied to three compression member and three simply supported beams with different reinforcements. The calculated stress-strain curve and deformation of three compression member and three beams is in accordance with the deformation characteristics of experiments, which verified the effectiveness of the proposed concrete damaged plasticity model of RPC.

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Hanif, M. U., Z. Ibrahim, K. Ghaedi, A. Javanmardi, and S. K. Rehman. "Finite Element Simulation of Damage In RC Beams." Journal of Civil Engineering, Science and Technology 9, no. 1 (April 30, 2018): 50–57. http://dx.doi.org/10.33736/jcest.883.2018.

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A concrete damage model has been incorporated in finite element code ABAQUS as concrete damaged plasticity model to examine the sensitivity of the damage, as ABAQUS has the model that is capable of stiffness degradation in cracking which is the basis of fracture mechanics. Nonlinear constitutive relationships for concrete and steel have been incorporated in the model. The static and dynamic response of the structure at 10 different damage levels is studied and the sensitivity of the damage model towards the presence of non-linearity has been discussed. The concrete damaged plasticity model is capable of predicting formation of cracks in concrete beams against any kind of loads, as the results match with the experimental results. It can be concluded that the concrete damaged plasticity is a versatile tool for modeling RC structures and careful choice of solution procedures for dynamic analysis can lead to accurate modeling of concrete using a few routine laboratory test results of the materials.

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Li, Ben-ben, Hai-bei Xiong, Jia-fei Jiang, and Yang Zhan. "Damage plasticity model for passively confined concrete." MATEC Web of Conferences 275 (2019): 02016. http://dx.doi.org/10.1051/matecconf/201927502016.

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This paper presents a modified concrete damage plasticity model (CDPM) for passively confined concrete within the concrete damage plasticity theory frame in ABAQUS. The modified CDPM can be used to simulate concrete under non-uniform passive confinement, for example, Fiber-reinforced polymer (FRP)-confined square concrete columns. The modification of CDPM includes a flow rule and a strain hardening/softening criterion in which dilation angle and yield stress are important parameters. Based on the true-triaxial experiment results of passively confined concrete, the dilation angle and yield stress were determined considering different confinement stiffness and non-uniform confinement stiffness ratio. Finally, the modified CDPM were incorporated in the ABAQUS model. The prediction of the finite element model of FRP-confined square concrete columns shows good prediction accuracy.

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Ding, Hui, Jian Ping Wang, and Cheng Fan. "Application of Damaged Plasticity Model on Slab-Column Joints." Applied Mechanics and Materials 777 (July 2015): 13–17. http://dx.doi.org/10.4028/www.scientific.net/amm.777.13.

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By the analysis of reinforced concrete slab, combined with experiment tests the feasibility of damaged plasticity model for concrete. Using parametric analyses, further the plastic damage model of related parameters set methods were discussed, concrete dilatation Angle, viscous coefficient, tensile stiffness, tensile damage on the results, in order to the design of slab-column connections engineering personnel to provide the reference.

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Shen, Xinpu, Lu Yang, and Fusheng Zhu. "A Plasticity-Based Damage Model for Concrete." Advances in Structural Engineering 7, no. 5 (October 2004): 461–67. http://dx.doi.org/10.1260/1369433042863260.

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Rafiqul Islam, Mohammad, Abbas Ali, Md Jahir Bin Alam, Tanvir Ahmad, and Salman Sakib. "Analysis of damage-plasticity model of concrete under uniaxial compression loading." International Journal of Engineering & Technology 10, no. 1 (January 21, 2021): 29. http://dx.doi.org/10.14419/ijet.v10i1.30878.

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Concrete is a quasi-brittle material and shows different behavior in compression and tension. It shows elastic behavior at initial stage and damage-plasticity behavior beyond elastic limit. Therefore, development of material behavior model of concrete is a complex phenomenon. In this study, concrete damage plasticity theory has been described under experiment on concrete cylinder considering uni-axial compression loading and interpreted with analytical data calculated using CEB-FIP model code equation. The code has divided the stress-strain curve for concrete compression into three sections according to concrete’s elastic and non-elastic behaviors. Those three sections have been considered to calculate analytical data. In experiment, concrete behavior has been observed in two phases. The damage value for different stresses at the various points on the stress strain curve has been calculated. According to analytical data, the concrete shows elastic behavior up to 8.3MPa stress point and no damage occur in the concrete within the limit. However, in experimental data, concrete shows elastic behavior up to only 2.28MPa and damage occurred beyond the stress. Finally, the percentage of damage of concrete due to compression obtained from analysis and experiment has been assessed and compared. Above 32 percent of concrete damage is found for 22.5 MPa in both cases.

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Blikharskyy, Yaroslav. "Calculation of damage RC constructions according to deformation model." Theory and Building Practice 2020, no. 2 (November 20, 2020): 99–106. http://dx.doi.org/10.23939/jtbp2020.02.099.

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This article presents results of a theoretical study of reinforced concrete beams with damaged reinforcement. The change of micro-hardness of a reinforcing rebar’s with a diameter of 20 mm of A500C steel in the radial direction is investigated and the thickness of the heat-strengthened layer is established. It is established that the thickness of the thermo-strengthened steel layer of the reinforcing bar with a diameter of 20 mm of A500C is approximately 3 mm. It is shown that the strength characteristics of this layer are on 50% higher compared to the core material of the rebar, while the plasticity characteristics are lower. The aim of the work is to determine the strength and deformability of reinforced concrete structures without damaging the reinforcement and in case of damage. Determining the impact of changes in the physical characteristics of reinforcement on the damage of reinforced concrete structures, according to the calculation to the valid norms, in accordance with the deformation model. To achieve the goal of the work, theoretical calculations of reinforced concrete beams were performed according to the deformation model, according to valid norms. This technique uses nonlinear strain diagrams of concrete and rebar and is based on an iterative method. According to the research program 3 beam samples were calculated. Among them were undamaged control sample with single load bearing reinforcement of ∅20 mm diameter – BC-1; sample with ∅20 mm reinforcement with damages about 40% without changes in the physical and mechanical properties of reinforcement – BD-2 and sample with ∅20 mm reinforcement with damages about 40% with changes in the physical and mechanical properties of reinforcement – BD-3. The influence of change of physical and mechanical characteristics of rebar’s on bearing capacity of the damaged reinforced concrete beams is established.

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Tao, Y., and J. F. Chen. "Concrete Damage Plasticity Model for Modeling FRP-to-Concrete Bond Behavior." Journal of Composites for Construction 19, no. 1 (February 2015): 04014026. http://dx.doi.org/10.1061/(asce)cc.1943-5614.0000482.

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Zhou, Feng, and Guangxu Cheng. "A Coupled Plastic Damage Model for Concrete considering the Effect of Damage on Plastic Flow." Mathematical Problems in Engineering 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/867979.

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A coupled plastic damage model with two damage scalars is proposed to describe the nonlinear features of concrete. The constitutive formulations are developed by assuming that damage can be represented effectively in the material compliance tensor. Damage evolution law and plastic damage coupling are described using the framework of irreversible thermodynamics. The plasticity part is developed without using the effective stress concept. A plastic yield function based on the true stress is adopted with two hardening functions, one for tensile loading history and the other for compressive loading history. To couple the damage to the plasticity, the damage parameters are introduced into the plastic yield function by considering a reduction of the plastic hardening rate. The specific reduction factor is then deduced from the compliance tensor of the damaged material. Finally, the proposed model is applied to plain concrete. Comparison between the experimental data and the numerical simulations shows that the proposed model is able to describe the main features of the mechanical performances observed in concrete material under uniaxial, biaxial, and cyclic loadings.

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Ni, Zhen Qiang, and Qin Shu Cui. "Numerical Simulation of Z-Shaped Column Joints in RC Frame Based on Damage Plasticity Model." Applied Mechanics and Materials 777 (July 2015): 173–78. http://dx.doi.org/10.4028/www.scientific.net/amm.777.173.

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This research selected Z-shaped section column joints in RC frame as the investigating object and considered the mechanical parameters extracted from physical model test results, proposed the finite element model of concrete damaged plasticity. Combining concrete damage plasticity model parameters on ABAQUS of concrete constitutive relationship from appendix C of Code for design of concrete structures (GB50010-2010), add the concept of damage factor to Energy equivalence principle, construct finite element model of Z-shaped column joints in RC frame, and simulated the test process under horizontal cyclic loading. The analysis results indicate that the finite element model can perfectly simulate action. It can reflect the mechanical properties of Z-shaped column joints in frame under horizontal cyclic loading, which is proved correct and reliable.

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Cao, Peng, Decheng Feng, and Changjun Zhou. "A Modified Damage-Plasticity Coupled Area-Weighted Nonlocal Model for Simulating Ductile Fracture and Softening Behaviors of Materials." Mathematical Problems in Engineering 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/862543.

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A nonlocal damage-plasticity coupled area-weighted model was proposed to investigate the fracture process of the ductile fracture materials with softening behavior, such as asphalt concrete materials. The model can overcome the mesh sensitivity problem in the analysis. A subroutine of ABAQUS software was developed to apply this nonlocal damage-plasticity coupled area-weighted model into finite element analysis. Then, the subroutine was adopted in finite element models to simulate several loading conditions. The results indicate that the nonlocal damage-plasticity coupled area-weighted model and the subroutine describe the softening behavior of asphalt concrete materials better than traditional softening models. And the robustness and stability of the proposed model were also justified. The proposed model provides a concrete and accurate alternate to predict the damage condition of asphalt concrete.

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Dulinska, Joanna M., and Izabela J. Murzyn. "Seismic Performance of a Concrete Highway Tunnel Using a Concrete Damage Plasticity Model." Key Engineering Materials 711 (September 2016): 966–73. http://dx.doi.org/10.4028/www.scientific.net/kem.711.966.

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In the paper a non-linear dynamic response of a concrete highway tunnel to a natural earthquake is presented. The acceleration time history of the registered shock was applied as seismic excitation acting in three directions. The peak ground acceleration (PGA) of the shock was 0.5 g. A three-dimensional FE model of the concrete tunnel section (600 m long) and surrounding soil layers was created with the ABAQUS software. To represent the inelastic behavior of the tunnel under the earthquake, a concrete damage plasticity model was assumed as a constitutive model for the concrete. A model of spatially varying ground motion, which takes so called “wave passage effect” was implemented for the dynamic analysis. Two velocities of seismic wave propagation were assumed: 500 and 1000 m/s. These velocities are typical for soft and stiff bedrock, respectively. It turned out that in case of stiffer bedrock, in which seismic waves propagate faster, the damage pattern shows less cracking than in case of soft bedrock. The distribution of plastic and damage computed indices also allowed to assess the impact of the shock on the structure. It turned out that the analyzed shock with PGA of 0.5 g was strong enough to cause severe destruction (cracking) in the tunnel lining. Finally, the transverse pattern of cracks, that was obtained from the calculations, was in good agreement with damages observed during severe earthquakes.

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Gholampour, Aliakbar, and Togay Ozbakkaloglu. "Finite Element Analysis of Constitutive Behavior of FRP-Confined Steel Fiber Reinforced Concrete." Key Engineering Materials 737 (June 2017): 511–16. http://dx.doi.org/10.4028/www.scientific.net/kem.737.511.

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This study presents the analysis of the constitutive behavior of fiber-reinforced polymer (FRP)-confined steel fiber reinforced concrete (SFRC) using a newly developed concrete damage-plasticity approach. Finite element (FE) analysis is conducted based on Lubliner’s model. The new concrete damage-plasticity approach accurately incorporates the effects of the steel fiber volume fraction and aspect ratio, confinement level, concrete strength, and nonlinear dilation behavior of confined concrete. New failure surface and flow rule were established using the experimental database. In order to validate the damage-plasticity model, the predictions from the FE analysis are compared with both experimental results and predictions of an accurate existing model for FRP-confined plain concrete. The analysis results indicate that the proposed approach accurately predicts the compressive behavior of FRP-confined SFRC.

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Grassl, P. "On a damage–plasticity approach to model concrete failure." Proceedings of the Institution of Civil Engineers - Engineering and Computational Mechanics 162, no. 4 (December 2009): 221–31. http://dx.doi.org/10.1680/eacm.2009.162.4.221.

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Yazdani, S., and H. L. Schreyer. "Combined Plasticity and Damage Mechanics Model for Plain Concrete." Journal of Engineering Mechanics 116, no. 7 (July 1990): 1435–50. http://dx.doi.org/10.1061/(asce)0733-9399(1990)116:7(1435).

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Abu‐Lebdeh, Taher M., and George Z. Voyiadjis. "Plasticity‐Damage Model for Concrete under Cyclic Multiaxial Loading." Journal of Engineering Mechanics 119, no. 7 (July 1993): 1465–84. http://dx.doi.org/10.1061/(asce)0733-9399(1993)119:7(1465).

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Cicekli, Umit, George Z. Voyiadjis, and Rashid K. Abu Al-Rub. "A plasticity and anisotropic damage model for plain concrete." International Journal of Plasticity 23, no. 10-11 (October 2007): 1874–900. http://dx.doi.org/10.1016/j.ijplas.2007.03.006.

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Zreid, Imadeddin, and Michael Kaliske. "A gradient enhanced plasticity–damage microplane model for concrete." Computational Mechanics 62, no. 5 (March 6, 2018): 1239–57. http://dx.doi.org/10.1007/s00466-018-1561-1.

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Wu, Hai Lin, Xiao Fan Du, Shi He Qin, Yao Li, and Qun Li. "Influence of Concrete Tension Softening Properties on the Steel-Liner Reinforced Concrete Penstock." Applied Mechanics and Materials 275-277 (January 2013): 1544–48. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.1544.

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In combination with the practice of a large hydropower station, concrete damaged plasticity model is introduced into the steel-liner reinforced concrete penstock for the nonlinear analysis, the damage distribution rules of the surrounding concrete and the stresses of the steels are furtherly studied under the different tension softening characteristic curves, the conclusions can provide the reference for damage assessment of the surrounding concrete and the optimization allocation of the reinforcement for the penstock.

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Dulinska, Joanna M. "Cooling Tower Shell under Asynchronous Kinematic Excitation Using Concrete Damaged Plasticity Model." Key Engineering Materials 535-536 (January 2013): 469–72. http://dx.doi.org/10.4028/www.scientific.net/kem.535-536.469.

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The paper presents the analysis of the dynamic response of a cooling tower to moderate earthquake. To represent inelastic behavior of the concrete material of the tower under dynamic loading, the concrete damaged plasticity constitutive model was assumed. The model consists of the combination of non-associated multi-hardening plasticity and scalar damaged elasticity to describe the irreversible damage that occurs during the fracturing process. Two different models of seismic excitation were used. Initially, a classical model of uniform kinematic excitation was applied. In this model it was assumed that excitation at all supports was identical. Then, a model of non-uniform kinematic excitation, typical for large multiple-support structures, was introduced. In that model the wave passage along the foundation ring was taken into account. It occurred that the assumption of asynchronous excitation led to the increase of the dynamic response of the tower with respect to the assumption of uniform ground motion. The tensile damage (cracking) in some parts of the tower appeared and the stiffness of the concrete was degraded when non-uniformity of excitation was considered. This was due to the quasi-static effects resulting from changes of subsoil geometry during the shock. The analysis indicated that the classical assumption of uniform excitation may lead to non-conservative assessment of the dynamic response of the shell described with concrete damaged plasticity model.

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Gholampour, Aliakbar, and Togay Ozbakkloglu. "Extended Constitutive Model for FRP-Confined Concrete in Circular Sections." Advanced Materials Research 1142 (January 2017): 349–54. http://dx.doi.org/10.4028/www.scientific.net/amr.1142.349.

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This study presents an extended finite element (FE) model based on concrete damage-plasticity approach for fiber-reinforced polymer (FRP)-confined normal-strength and high-strength concrete (NSC and HSC). The proposed model is based on Lubliner’s model and it accurately incorporates the effects of confinement level, concrete strength, and nonlinear dilation behavior. Failure surface and flow rule were established using an up-to-date database. In order to validate the extended damage-plasticity model, finite element (FE) model is developed for specimens under a wide range of confining pressures. The results indicate that the model predictions of FRP-confined NSC and HSC are in good agreement with the experimental results.

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Li, Rong Tao. "Coupled Damage and Plasticity Modeling in Failure Analysis of Heated Concrete." Advanced Materials Research 671-674 (March 2013): 1531–34. http://dx.doi.org/10.4028/www.scientific.net/amr.671-674.1531.

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A coupled elastoplastic-damage constitutive model with consideration of chemo-induced material elastoplastic-damage effects due to heating concrete is proposed. A consistent return mapping algorithm for the integration of the rate coupled constitutive equations is developed. Consistent tangent modulus matrices for coupled chemo-thermo-hygro-mechanical analysis are derived to preserve the quadratic rate of convergence of the global Newton iterative procedure. Numerical results demonstrate the validity of the presented algorithm and illustrate the performance of the proposed constitutive model in reproducing coupled chemo-thermo-hygro-mechanical behavior in concretes subjected to fire.

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Zhao, Shaoyu, Shuli Fan, Jie Yang, and Sritawat Kitipornchai. "A spherical smart aggregate sensor based electro-mechanical impedance method for quantitative damage evaluation of concrete." Structural Health Monitoring 19, no. 5 (December 2, 2019): 1560–76. http://dx.doi.org/10.1177/1475921719888963.

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In this study, the concrete damage induced by compression is evaluated quantitatively using spherical smart aggregate sensor based on electro-mechanical impedance method. The sensitivity of the spherical smart aggregate sensor embedded in concrete cubes is investigated by comparing the electrical signals recorded during the compressive process with those of the smart aggregate sensor embedded in concrete cubes. Furthermore, the finite element model of concrete cube with an embedded spherical smart aggregate sensor is developed to simulate the concrete compressive tests. The concrete damaged plasticity constitutive model is utilized to simulate the concrete damage process. The numerical model is verified with the experimentally measured compressive test results. Finally, the damage volume ratio is presented to quantify the damage level of concrete based on the numerical model. The relationship between the root mean square deviation index of the conductance signatures obtained from experiments and the damage volume ratio computed by numerical simulation is established to quantify the concrete damage level. The results show that the spherical smart aggregate sensor is more sensitive than the smart aggregate sensor in monitoring the three-dimensional concrete structures. The proposed empirical fitting curve can effectively evaluate the concrete damage level quantitatively.

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Dulinska, Joanna M., and Izabela J. Murzyn. "Seismic Performance of a Concrete Highway Tunnel under Earthquake Sequence Using a Concrete Damage Plasticity Model." Key Engineering Materials 725 (December 2016): 110–15. http://dx.doi.org/10.4028/www.scientific.net/kem.725.110.

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The aim of this paper was to investigate the dynamic response of a concrete tunnel subjected to mainshock–aftershock seismic sequence. Three components of the registered seismic saquence were applied as seismic excitation acting in three directions. A three-dimensional FE model of a tunnel section (600 m long) was prepared with the ABAQUS software. The soil layers interacting with the tunnel lining were also taken into consideration. To represent the inelastic behavior of the concrete material under the earthquakes, a concrete damage plasticity model (CDP) was assumed a constitutive model for the concrete. The analysis proved that strongly nonlinear behaviour of the concrete lining of the tunnel was observed under the sequence of seismic events. The plastic strains as well the tensile damage (cracking) were noticed in some zones of the concrete lining after the first and the second event. The crack patterns were in good agreement with damages observed on concrete tunnels during real earthquakes. The results indicate that aftershocks can enlarge zones affected by irreversible strains or cause damage evolution. The analysis also revealed that aftershocks, even being much weaker than main events, may result in additional loss of concrete material strength while performing in mainshock-aftershock seismic sequences and striking a structure which is already degraded by a mainshock.

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Peng, Manyu. "Meso-concrete Uniaxial Compression Experiment Based on ABAQUS." Highlights in Science, Engineering and Technology 52 (July 4, 2023): 304–11. http://dx.doi.org/10.54097/hset.v52i.9216.

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Plain concrete is made of cement matrix and aggregates. The current numerical model researches mostly consider the cement matrix and ignore the existence of coarse aggregates, which is not consistent with the reality. In view of that, this article uses ABAQUS as the platform to establish a meso-concrete damage model based on the concrete coarse aggregates and CDP (Concrete Damaged Plasticity) model constructed in Python language. The results show that: (1) The main failure mode of concrete model is shear failure, and the crack is about 45° to the vertical plane. (2) Under the action of the load, multiple micro-cracks are formed at the end of the concrete, which are gradually extended to each other, and finally a macroscopic large crack is formed. (3) The damage model proposed in this article is in line with reality and provides guidance for concrete damage research.

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Zhang, Cong, Zhende Zhu, Shu Zhu, Zhilei He, Duan Zhu, Jinzhong Liu, and Songsong Meng. "Nonlinear Creep Damage Constitutive Model of Concrete Based on Fractional Calculus Theory." Materials 12, no. 9 (May 8, 2019): 1505. http://dx.doi.org/10.3390/ma12091505.

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Concrete creep has become one of the major problems that threatens concrete structural development and construction. However, a reasonable and accurate calculation model for numerical analysis is the key to control and solve the creep deformation of concrete. To better describe the concrete nonlinear creep damage evolution rule, the visco-elasticity Plasticity Rheological Theory, Riemann Liouville Theory and Combined Model Theory are quoted, and the Able dashpot is used to reconstruct fractional-order soft-body composite elements to propose the expression of the stress-strain relationship of the elastomer, visco-elasticity plasticity body, and Viscoplasticity body, considering the evolution of the concrete compression damage process. A nonlinear creep damage constitutive model of concrete, based on fractional calculus theory, is conducted, and the parameters of the specific calculation method of the model are given. The influence of stress level σ, fractional order n and material parameter α on the concrete creep process is determined by a sensitivity analysis of the model parameters. The creep process and deformation amount of concrete in practical engineering can be effectively controlled by the results of the proposed sensitivity analysis. The research results can be used to provide guidance and reference for the safe construction of concrete engineering in actual practice.

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Shekarbeigi, Mehdi, and Hasan Sharafi. "Constitutive Model for Concrete: An Overview." Current World Environment 10, Special-Issue1 (June 28, 2015): 782–88. http://dx.doi.org/10.12944/cwe.10.special-issue1.94.

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In the last three decades, the constitutive modelling of concrete evolved considerably. This paper describes various developments in this field based on different approaches such anelasticity, plasticity, continuum damage mechanics, plastic fracturing, endochronic theory, microplane models, etc. In this article the material is assumed to undergo small deformations. Only time independent constitutive models and the issues related to their implementation are discussed

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Dulinska, Joanna M., and Dorota Jasinska. "Performance of Steel Pipeline with Concrete Coating (Modeled with Concrete Damage Plasticity) Underseismic Wave Passage." Applied Mechanics and Materials 459 (October 2013): 608–13. http://dx.doi.org/10.4028/www.scientific.net/amm.459.608.

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The paper presents the analysis of the dynamic response of a steel pipeline with concrete coating to a real earthquakeregistered in central Poland in 2012. The peak ground acceleration of the shock was scaled up to maximal values predicted for this seismic zone. To represent theinelastic behavior of the material of the concrete coating under dynamic loading, the concrete damaged plasticity constitutive model was assumed.The modelallows to describeplastic strains and irreversible tensile and compression damage that occurs during the cracking process.For seismic analysis two models (uniform and non-uniform) of kinematic excitation were applied. In the modelof uniform excitation it was assumed that the motion of all supports was identical. Inthe model of non-uniform excitation, typical for long structures, the wave passage along the pipelinewith different velocities (500, 400 and 300 m/s) was taken into account. It occurred that for the model of uniform excitation the concrete material of the coating remained elastic with no tensile damage. For the model of non-uniform excitation, inelastic behaviour of the coating was observed. The plastic strain areas appeared above all supports. The tensile damage (cracking) wasalso noticed in these areas: the lower wave velocity was assumed, the greater area of concrete coating was affected by plastic strains and tensile damage (cracking). It was the consequence of the quasi-static effects which resulted from ground deformations imposed on the pipeline during the seismic shock.

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Ma, Cheng, and Wei-zhen Chen. "Three-dimensional elastoplastic damage concrete model by dissipation-based arc-length method." Advances in Structural Engineering 19, no. 12 (July 28, 2016): 1949–62. http://dx.doi.org/10.1177/1369433216649391.

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This article presents a three-dimensional isotropic elastoplastic damage model for concrete structures. The plasticity of concrete is described by a nonassociated flow rule, using a three-parameter yield function as well as a modified Drucker–Prager-type potential. The damage of concrete is seen as a contribution work of tensile and compressive damage, with the evolution histories driven by the internal tensile and compressive variables, respectively. The iterative solution of plasticity and damage is carried out according to the concept of operator split, where a return-mapping algorithm as well as a substepping strategy is used. The consistent tangent stiffness considering the recursive relationship among substeps is derived. For the solution of global iteration, a dissipation-based arc-length method is employed. Good agreements are found in comparisons between numerical results and experimental data on both elementary and structural levels. Furthermore, the sensitivities of parameters that control strain softening are investigated.

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Nguyen, Xuan Bang, and Tri Ta Nguyen. "Using the Simplified Concrete Damage Plasticity Model in Studying the Penetration Depth in Concrete." Defect and Diffusion Forum 415 (April 27, 2022): 109–14. http://dx.doi.org/10.4028/p-81pkw0.

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This paper, with the simplified concrete damage plasticity (SCDP) model, studying the penetration depth of steel projectile in the concrete block by Abaqus software. Comparing the results calculated by Abaqus software with the Modified NDRC formula to check the reliability of the computational model and material model. From there, studying the effect of concrete strength on penetration depth in concrete B20, B30, B40, B50.

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Ma, Cheng, Wei-zhen Chen, and Jian-yuan Sun. "Numerical Implementation of Spatial Elastoplastic Damage Model of Concrete in the Framework of Isogeometric Analysis Approach." Mathematical Problems in Engineering 2016 (2016): 1–13. http://dx.doi.org/10.1155/2016/4273024.

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This paper is a study of the numerical implementation of the spatial elastoplastic damage model of concrete by isogeometric analysis (IGA) method from three perspectives: the geometric modeling and the numerical formulation via IGA method, the constitutive model of concrete, and the solution algorithms for the local and global problems. The plasticity of concrete is considered on the basis of a nonassociated flow rule, where a three-parameter Barcelona yield surface and a modified Drucker-Prager plastic potential are used. The damage evolution of concrete driven by the internal variables is expressed by a piecewise function. In the study, the return-mapping algorithm and the substepping strategy are used for stress updating, and a new dissipation-based arc-length method with constraint path that considers the combined contribution of plasticity and damage to the energy dissipation is employed to trace the equilibrium path. After comparisons between simulation results and experimental data, the use of the elastoplastic damage model in the framework of IGA approach is proven to be practical in reflecting material properties of concrete.

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Wosatko, Adam, Michał Szczecina, and Andrzej Winnicki. "Selected Concrete Models Studied Using Willam’s Test." Materials 13, no. 21 (October 24, 2020): 4756. http://dx.doi.org/10.3390/ma13214756.

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Willam’s test is a quick numerical benchmark in tension–shear regime, which can be used to verify inelastic (quasi-brittle) material models at the point level. Its sequence consists of two separate steps: uniaxial tension accompanied with contraction—until the tensile strength is attained; and next for softening (cracking) of the material—tension in two directions together with shear. A rotation of axes of principal strains and principal stresses is provoked in the second stage. That kind of process occurs during the analysis of real concrete structures, so a correct response of the material model at the point level is needed. Some familiar concrete models are selected to perform Willam’s test in the paper: concrete damaged plasticity and concrete smeared cracking—distributed in the commercial ABAQUS software, scalar damage with coupling to plasticity and isotropic damage—both implemented in the FEAP package. After a brief review of the theory, computations for each model are discussed. Passing or failing Willam’s test by the above models is concluded based on their results, indicating restrictions of their use for finite element computations of concrete structures with predominant mixed-mode fracture.

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Xiao, Han, Kezhen Zhang, and Jiale Du. "Numerical Simulation Analysis of Uniaxial Compression Damage of Reinforced Concrete Columns Based on ABAQUS." Highlights in Science, Engineering and Technology 51 (May 16, 2023): 113–18. http://dx.doi.org/10.54097/hset.v51i.8246.

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Reinforced concrete columns are widely used in construction projects and are mainly damaged by compression. In order to study the characteristics of the damage of reinforced concrete columns under uniaxial compression state, the uniaxial compression damage model of reinforced concrete columns is established by introducing the element deletion algorithm, concrete damage plasticity model (CDP) based on ABAQUS software. The results show that: (1) Under the load, the damage starts at the end of the specimen and expands to the middle, finally forming a through diagonal crack. The diagonal cracks are at 45° to the bottom surface. (2) At the beginning of load loading, the reinforcement has not yet reached the yield strength, and the restraining effect of the hoop on the concrete is not yet obvious. (3) With the increase of load, the hoop reinforcement and longitudinal reinforcement successively yielded. Local damage occurs in the concrete protective layer until the specimen fractures.

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Ciura, Rafał, Izabela Drygała, and Joanna M. Dulinska. "Dynamic assessment of a cable-stayed footbridge under earthquake sequence using a concrete damage plasticity model (CDP)." MATEC Web of Conferences 211 (2018): 09002. http://dx.doi.org/10.1051/matecconf/201821109002.

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In this paper, the investigation of the dynamic response of a cable-stayed footbridge with steel reinforced concrete deck to foreshocks, a mainshock and an aftershock seismic sequence is delivered. For the aim of the study the finite element (FE) model was prepared with the ABAQUS/Standard software program. The representative seismic events with three components were taken into account in the numerical simulation. For the evaluation of seismic-induced damages in reinforced concrete deck of the footbridge, the concrete damage plasticity (CDP) model was applied.

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Xu, Qiang, Jian-yun Chen, Jing Li, and Gang Xu. "Coupled elasto-plasticity damage constitutive models for concrete." Journal of Zhejiang University SCIENCE A 14, no. 4 (April 2013): 256–67. http://dx.doi.org/10.1631/jzus.a1200196.

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Lei, Tuo, Jiang Qian, and Qing Biao Tian. "Finite Element Analysis of High-Strength Concrete Flat Columns with Diagonal Reinforcements." Advanced Materials Research 791-793 (September 2013): 514–18. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.514.

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Based on the reversed cyclic loading test of three 1:4 high-strength concrete flat columns, the computer program ABAQUS was used to simulate behaviors of the specimens. Concrete in the column was modeled using the damage plasticity material model, and a uniaxial steel model with combined isotropic and kinematic hardening properties was used to simulate the behavior of the reinforcement. The establishment of the finite element model, definition of the material parameters and the influence of diagonal reinforcement were discussed at length. The results show that the concrete damage plasticity model can be well used for hysteretic analysis of reinforced concrete members if the relevant parameters are reasonably defined. Diagonal reinforcements can not significantly improve ductility of the specimens, but can improve their shear capacities. This paper can provide reference for the performance simulation of reinforced concrete members under cyclic loading.

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Bilal, Kamel A., Mustafa Mahamid, M. Amin Hariri-Ardebili, Cenk Tort, and Travis Ford. "Parameter Selection for Concrete Constitutive Models in Finite Element Analysis of Composite Columns." Buildings 13, no. 7 (July 11, 2023): 1759. http://dx.doi.org/10.3390/buildings13071759.

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Concrete, as a complex and anisotropic material, poses challenges in accurately simulating its behavior in numerical simulations. This paper focuses on selecting an appropriate constitutive model for simulating the behavior of a steel–concrete composite column using finite element analysis under compression and push-out tests. Two models are analyzed and compared, namely, Drucker–Prager and concrete damage plasticity. The results demonstrate that the concrete damage plasticity model outperforms the Drucker–Prager model in all six test cases, indicating its superior accuracy in capturing the composite column’s behavior. This study enhances the reliability of numerical simulations for steel–concrete composite structures by choosing the most suitable constitutive model, parallel with extensive sensitivity analysis and model calibration. The findings emphasize the significance of meticulous model selection and precise parameter definition for achieving accurate predictions of concrete behavior. This research contributes to advancing the understanding and modeling of concrete’s intricate behavior in structural analyses.

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Han, Xue, and Zheng Liu. "Numerical Simulation on the Form of Reinforcement of Reinforced Concrete Beam with Openings." Applied Mechanics and Materials 444-445 (October 2013): 884–88. http://dx.doi.org/10.4028/www.scientific.net/amm.444-445.884.

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In order to research the stress performance of reinforced concrete beam with different forms of reinforcement around the openings, a numerical simulation on reinforced concrete beam with circle openings is made by using the finite element software. The constitutive relation of concrete offered by the 2010 edition of code for design of concrete structures and the concrete damaged plasticity model is adopted in this article. The damage factor is introduced in the process of modeling, which can reflect the damage of beams with different forms of reinforcement directly and help to reveal the failure mechanism of members. Thus we can propose the optimization of reinforcement method.

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Dulinska, Joanna M., and Radoslaw Szczerba. "Assessment of Concrete Bridge Performance under Moderate Seismic Shock Using Concrete Damage Plasticity Model." Procedia Engineering 57 (2013): 1319–28. http://dx.doi.org/10.1016/j.proeng.2013.04.166.

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Ren, Xiaodan, Qing Wang, Roberto Ballarini, and Xiangling Gao. "Coupled Creep-Damage-Plasticity Model for Concrete under Long-Term Loading." Journal of Engineering Mechanics 146, no. 5 (May 2020): 04020027. http://dx.doi.org/10.1061/(asce)em.1943-7889.0001748.

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Feng, De-Cheng, Xiao-Dan Ren, and Jie Li. "Softened Damage-Plasticity Model for Analysis of Cracked Reinforced Concrete Structures." Journal of Structural Engineering 144, no. 6 (June 2018): 04018044. http://dx.doi.org/10.1061/(asce)st.1943-541x.0002015.

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Benin, Andrey, Matija Guzijan-Dilber, Leonid Diachenko, and Artem Semenov. "Finite element simulation of a motorway bridge collapse using the concrete damage plasticity model." E3S Web of Conferences 157 (2020): 06018. http://dx.doi.org/10.1051/e3sconf/202015706018.

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The aim of this work is to show how the concrete damage plasticity model developed by Lubliner et al. can be applied for calculation of a motorway bridge collapse occurred in the Amur region, Russia. The concrete structural behaviour is highly complex. Being a quasi-brittle material, concrete demonstrates softening behaviour that is numerically complex due to the loss of positive definiteness of the tangent rigidity matrix of the material, and hence the loss of the ellipticity of the equilibrium rate equation. This eventually leads to the loss of well-posedness of the rate boundary value problem. Besides that, concrete behaviour in compression differs from that in tension. There are a few different failure modes of concrete material: tension cracking, compression crushing, spalling of concrete, etc.

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Ahmed, Bilal, George Z. Voyiadjis, and Taehyo Park. "Damaged plasticity model for concrete using scalar damage variables with a novel stress decomposition." International Journal of Solids and Structures 191-192 (May 2020): 56–75. http://dx.doi.org/10.1016/j.ijsolstr.2019.11.023.

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Wang, Hongge, Hong Xiao, Xuhao Cui, Shusheng Yang, Mahantesh M. Nadakatti, and Qiang Guo. "Influence of Uneven Subgrade Frost Heave on Deformation and Damage of CRTSIII Slab Track." Applied Sciences 13, no. 9 (April 25, 2023): 5345. http://dx.doi.org/10.3390/app13095345.

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The problem of uneven frost heave deformation of high-speed railway subgrade in seasonal freezing areas seriously affects the service state and service life of slab track structures and threatens the safe operation of high-speed vehicles. Based on the damage plasticity theory of concrete, in this study, an analytical model is established for CRTSIII slab track with damage plasticity and reinforcement. The influences of various frost heaving parameters on track structure deformation, interlayer seam, as well as the stress and damage behaviors were analyzed in detail. The results show that, as compared with a linear elastic model, the damage plastic model better reflects the softening behavior and stress attenuation of track structure concrete after reaching its tensile strength. The deformation and the interlayer seam reach their maximum values when the frost heaving wave peak acts at the position that is one-sixth of the base length from the edge of the concrete base. When the frost heaving wave peak acts on grooves at the base center, initially, the track structure is seriously damaged. The interlayer seam and damage decrease with an increase in frost heaving wavelength and increase with an increase in frost heaving wave amplitude. The interlayer seam of the track structure is more sensitive to frost heave deformation having a wavelength of less than 10 m. The extent of damage to the concrete base gradually increases with a decrease in the wave/amplitude ratio. It undergoes three stages of damage evolution: (i) no damage, (ii) upper surface bending damage, (iii) reverse bending damage. In order to improve efficiency, it is recommended, during track maintenance, to focus on the position of the central groove of the base and the position that is one-sixth of the base length from the edge of the concrete base.

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Iqbal, Javed. "Numerical Simulation of Cracking in Asphalt Concrete Through Continuum and Discrete Damage Model." International Journal for Research in Applied Science and Engineering Technology 9, no. 11 (November 30, 2021): 2018——2020. http://dx.doi.org/10.22214/ijraset.2021.39123.

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Abstract: This study describes the development of Continuum and Discrete Damage Models in commercial finite element code Abaqus/Standard. The Concrete Damage Plasticity Model has been simulated, analysed, and compared the result with the experimental data. For verification, the Cohesive Zone Model has been simulated and analysed. Furthermore, the Extended Finite Element Model and concrete damage model are discussed and compared. The continuum damage model tends to simulate the complex fracture behaviour like crack initiation and propagation along with the invariance of the result, while the cohesive zone model can simulate and propagate the crack as well as the good agreement of the result. Further work in the proposed numerical models can better simulate the fracture behaviour of asphalt concrete in near future. Keywords: Model, Concrete, Cohesive Zone, Finite element, Abaqus.

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Sun, Yuan Xiang, and Lin Xu. "Modelling of Impact Behavior of Concrete Subjected to Shock Loading." Key Engineering Materials 577-578 (September 2013): 645–48. http://dx.doi.org/10.4028/www.scientific.net/kem.577-578.645.

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This paper presents a coupled model of damage and plasticity to describe the complex behavior of concrete subjected to shock loading. Comparison with the test results shows that the proposed model can give consistent prediction of the impact behavior of concrete.

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Journal articles on the topic 'Concrete Damage Plasticity Model'

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