Relevant bibliographies by topics / VUMAT user law

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'VUMAT user law'

Author: Grafiati
Published: 7 December 2024
Last updated: 31 July 2025

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Journal articles on the topic "VUMAT user law"

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Hu, Jing, Xiao Xing Li, Kwan Soo Chung, and Rao Yao. "Spring-Back Evaluation of Stretch Bending Process Based on Chaboche Combined Isotropic-Kinematic Hardening Laws." Advanced Materials Research 204-210 (February 2011): 1745–50. http://dx.doi.org/10.4028/www.scientific.net/amr.204-210.1745.

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We present a study on spring-back prediction in the stretching bending process using the Chaboche model combined isotropic-kinematic hardening law and Mises yielding criterion, and a material user subroutine (VUMAT, UMAT) program was developed base on the ABAQUS interface for the model. The effects of different hardening law on the spring-back in the stretch forming process was also analyzed and compared. The simulation results show that the combined isotropic-kinematic hardening law has the better spring-back prediction compared with the pure isotropic and kinematic hardening law in the stret
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Belova, O. N., D. V. Chapliy, and L. V. Stepanova. "APPLICATION OF THE UMAT SUBROUTINE FOR SOLVING CONTINUUM MECHANICS PROBLEMS (OVERVIEW)." Vestnik of Samara University. Natural Science Series 27, no. 3 (2022): 46–73. http://dx.doi.org/10.18287/2541-7525-2021-27-3-46-73.

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This paper presents an overview of the application of the UMAT subroutine of the SIMULIA Abaqus multifunctional software package in solid mechanics and related areas. This subroutine is used to describe new user materials that are not available in the class of standard materials of the SIMULIA Abaqus package. This overview article provides examples of problems and constitutive equations of materials that are modeled using UMAT / VUMAT procedures. Various types of materials are presented, successfully described by means of user-defined UMAT and VUMAT procedures. A general description and experi
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Ming, Lu, and Olivier Pantalé. "An efficient and robust VUMAT implementation of elastoplastic constitutive laws in Abaqus/Explicit finite element code." Mechanics & Industry 19, no. 3 (2018): 308. http://dx.doi.org/10.1051/meca/2018021.

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This paper describes the development of an efficient and robust numerical algorithm for the implementation of elastoplastic constitutive laws in the commercial non-linear finite element software Abaqus/Explicit through a VUMAT FORTRAN subroutine. In the present paper, while the Abaqus/Explicit uses an explicit time integration scheme, the implicit radial return mapping algorithm is used to compute the plastic strain, the plastic strain rate and the temperature at the end of each increment instead of the widely used forward Euler approach. This more complex process allows us to obtain more prec
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Zhao, Pengjing, Jingpin Jiao, Gang Fang, Zhanghua Chen, and Xiang Gao. "Investigation on tensile deformation and failure for 5052 aluminum alloy based on continuum damage model." Journal of Physics: Conference Series 2085, no. 1 (2021): 012039. http://dx.doi.org/10.1088/1742-6596/2085/1/012039.

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Abstract A VUMAT user material subroutine for the Lemaitre continuous damage mechanics model was developed based on the finite element solver ABAQUS/Explicit platform to investigate the deformation and failure behavior of 5052 aluminum alloy. The mechanical property parameters and damage parameters of 5052 aluminum alloy were identified by the inversion method combining tensile test and finite element simulation. The numerical simulation results showed that the force-displacement curves predicted by the established damage model were in good agreement with the experimental measurement, and the
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Lian, J., M. Sharaf, F. Archie, and S. Münstermann. "A hybrid approach for modelling of plasticity and failure behaviour of advanced high-strength steel sheets." International Journal of Damage Mechanics 22, no. 2 (2012): 188–218. http://dx.doi.org/10.1177/1056789512439319.

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The ductile damage mechanisms dominating in modern high-strength steels have emphasised the significance of the onset of damage and the subsequent damage evolution in sheet metal forming processes. This paper contributes to the modelling of the plasticity and ductile damage behaviour of a dual-phase steel sheet by proposing a new damage mechanics approach derived from the combination of different types of damage models. It addresses the influence of stress state on the plasticity behaviour and onset of damage of materials, and quantifies the microstructure degradation using a dissipation-energ
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Gao, Wei, Zhiqiang Yu, Aijie Ma, and Zhangxin Guo. "Numerical simulation of composite grid sandwich structure under low-velocity impact." Science and Engineering of Composite Materials 29, no. 1 (2022): 516–28. http://dx.doi.org/10.1515/secm-2022-0176.

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Abstract The low-velocity impact finite element model of the carbon fiber-reinforced composite grid sandwich structure was established by ABAQUS. Its panels and grid are both carbon fiber-reinforced composite laminates. The constitutive relation of composite laminates is written into the VUMAT user subroutine using the Fortran language. Simulation of intralaminar failure behavior of composite laminates using the three-dimensional Hashin failure criterion. The quadratic stress criterion and the B-K energy criterion were used to simulate the interlaminar failure behavior, and the delamination da
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Salem, Brahim, Ali Mkaddem, Malek Habak, Yousef Dobah, and Abdessalem Jarraya. "A New Double-Inclination Oblique Model to Simulate Drilling of GFRP/Al-Based Stacks: A Thermomechanical Approach." Polymers 17, no. 8 (2025): 1047. https://doi.org/10.3390/polym17081047.

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This paper reports an investigation of the thermomechanical behavior at the interface of GFRP/Al composite stacks when the stacking arrangement varies. A temperature-coupled damage approach was developed to simulate thermal energy transfer and damage propagation at metallic-to-composite interface. The proposed model was then implemented into ABAQUS/Explicit finite element code using user-defined subroutine VUMAT finely imbricated with VDFLUX. Unlike to previous models, oblique cutting configuration (OCC) involving double-inclination of the tool was proposed to simulate finely the material remo
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Bandaru, Aswani Kumar, and Suhail Ahmad. "Effect of Projectile Geometry on the Deformation Behavior of Kevlar Composite Armors Under Ballistic Impact." International Journal of Applied Mechanics 07, no. 03 (2015): 1550039. http://dx.doi.org/10.1142/s1758825115500398.

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A failure model based on the three-dimensional strains in a composite layer with improved progressive damage modeling has been implemented to predict the deformation behavior of composite armors subjected to ballistic impact. The present model comprises mainly of two parts. First, quadratic strain based failure criteria are presented to predict the initiation of failure modes. Second, the post damage softening behavior and degradation of the material stiffness is measured by damage evolution law. The model has been implemented within ABAQUS/Explicit as a user defined subroutine VUMAT. The vali
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Al-Azzawi, Ahmad SM, Luiz F. Kawashita, and Carol A. Featherston. "Predicting interlaminar damage behaviour of fibre-metal laminates containing adhesive joints under bending loads." Journal of Reinforced Plastics and Composites 41, no. 5-6 (2021): 167–86. http://dx.doi.org/10.1177/07316844211051706.

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This study includes experimental and numerical investigations on fibre-metal laminate structures containing adhesive joints under static bending loads. Experimental tests were carried out on Glare® 4B specimens manufactured in-house and containing doubler joint features. Numerical analyses were performed using Abaqus software including damage in the glass fibre reinforced polymer layers, ductile damage in the resin pockets (FM94 epoxy) and plasticity in the metal layers. A new cohesive zone model coupling friction and interfacial shear under through-thickness compressive stress has been develo
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Wang, Peijie, Chuanchuan Ma, Chun Xue, and Zhibing Chu. "Study on Influence of Mechanical Behavior of AZ31 Magnesium Alloy Based on GTN Damage Modeling." Materials 18, no. 1 (2024): 90. https://doi.org/10.3390/ma18010090.

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Damage mechanisms are a key factor in materials science and are essential for understanding and predicting the behavior of materials under complex loading conditions. In this paper, the influence of different directions, different rates and different model parameters on the mechanical behavior of AZ31 magnesium alloy during the tensile process is investigated based on the secondary development of the VUMAT user subroutine based on the GTN damage model and verified by the tensile experiments at different loading rates and in different directions. The results show that AZ31 magnesium alloy exhib
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Dissertations / Theses on the topic "VUMAT user law"

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Gouillou, Franck. "Comportement dynamique des composites à fibres naturelles et résines thermoplastiques : étude de la sensibilité à la vitesse de déformation." Electronic Thesis or Diss., Ecole nationale des Mines d'Albi-Carmaux, 2024. http://www.theses.fr/2024EMAC0004.

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Ces travaux visent à explorer le comportement des composites à matrice thermoplastique renforcée de fibres naturelles en examinant leur réponse à la vitesse de déformation lors de sollicitations en traction, en se concentrant particulièrement sur la variation du module d'élasticité longitudinal pour les composites à 0° et du module d'élasticité en cisaillement pour les stratifiés à ±45°. En utilisant des fibres de bambou, de lin et de basalte comme renforts unidirectionnels et le polyamide-11 semi-cristallin ainsi que la résine amorphe ELIUM comme matrices, diverses campagnes expérimentales on
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Conference papers on the topic "VUMAT user law"

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Kumar, Pawan, Anil Meena, and Shantanu S. Mulay. "Development of 3D Damage Mechanics-Based Model for Predicting Fiber Orientation-Influenced Crack Propagation in Unidirectional Lamina." In ASME 2024 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2024. https://doi.org/10.1115/imece2024-145206.

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Abstract This study develops and validates a three-dimensional continuum damage mechanics (CDM) model to predict crack paths in a lamina, focusing on the influence of fiber orientation on crack propagation. Utilizing 3D Hashin’s failure theory and a stiffness degradation law based on equivalent strain and stress concepts, the model assesses damage onset and progression, respectively. The key contribution is providing a clear approach for orthotropic material 3D patch tests, addressing constitutive responses and specific failure modes, an area lacking in current literature. These patch tests, e
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Mokhtari, Mojtaba, Ekaterina Kim, and Jørgen Amdahl. "Numerical Simulation of an Aluminium Panel Subject to Ice Impact Load Using a Rate and Pressure Dependent Elastoplastic Material Model for Ice." In ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/omae2023-104771.

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Abstract This study presents an elastoplastic material model with a pressure and rate dependent yield criterion for freshwater polycrystalline ice, implemented to simulate the structural damage in a full-scale AA5083-H116 aluminium panel subject to ice impact load in a drop test. The proposed ice material model is validated against physical ice-crushing tests with a good correlation between the experimental and numerical results. The material model is based on the Tsai-Wu yield surface, which is defined to evolve differently in the ductile and brittle regimes of ice to account for the ‘ductile
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Patel, Shivdayal, and Suhail Ahmad. "Failure Prediction of Fiber Reinforced Laminated Composite Plates Under Low Velocity Impact." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54486.

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The low velocity impact on composites has been studied as it leads to serious damage. The damage initiates as an intra ply matrix crack due to shear or bending which propagates further into the interface causing de-lamination between dissimilar plies and fiber breakage. This damage evolves with time and adversely affects the mechanical properties and strength of the composite. Since, multiple cracks in the ply are difficult to track, a progressive damage mechanics approach is used to model this failure. The inter ply failure is modeled using cohesive surfaces between the plies. The low velocit
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Wenman, Mark, James Barton, Kenneth Trethewey, Sean Jarman, and Paul Chard-Tuckey. "Finite Element Modelling of Transgranular Chloride Stress Corrosion Cracking in 304L Austenitic Stainless Steel." In ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61262.

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Austenitic stainless steels (ASS) have excellent resistance to general corrosion. However, these steels can be susceptible to localised corrosion such as pitting and crevice corrosion. In the presence of a tensile stress they can also exhibit stress corrosion cracking (SCC). In pressurised water reactor (PWR) nuclear plant incidents of SCC, especially chloride-induced SCC (CISCC), have been observed. Chloride ions which can lead to CiSCC of even low carbon austenitic grades can be introduced from many sources including the atmosphere and materials introduced into the reactor environment. Stres
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