UMAT

ABAQUS user-defined UMAT and VUMAT. UMAT: Warning: The use of this subroutine generally requires considerable expertise. You are cautioned that the implementation of any realistic constitutive model requires extensive development and testing. Initial testing on a single-element model with prescribed traction loading is strongly recommended. User subroutine UMAT: can be used to define the mechanical constitutive behavior of a material; will be called at all material calculation points of elements for which the material definition includes a user-defined material behavior; can be used with any procedure that includes mechanical behavior; can use solution-dependent state variables; must update the stresses and solution-dependent state variables to their values at the end of the increment for which it is called; must provide the material Jacobian matrix for the mechanical constitutive model; can be used in conjunction with user subroutine USDFLD to redefine any field variables before they are passed in; and is described further in User-defined mechanical material behavior.


References in zbMATH (referenced in 85 articles )

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  1. Di Gennaro, L.; Daghia, F.; Olive, M.; Jacquemin, F.; Espinassou, D.: A new mechanism-based temperature-dependent viscoelastic model for unidirectional polymer matrix composites based on Cartan decomposition (2021)
  2. Heczko, Jan; Kottner, Radek; Kossa, Attila: Rubber ageing at elevated temperature -- model calibration (2021)
  3. Mánik, Tomáš: A natural vector/matrix notation applied in an efficient and robust return-mapping algorithm for advanced yield functions (2021)
  4. Meng, Changyu; Wei, Haoyang; Chen, Hailong; Liu, Yongming: Modeling plasticity of cubic crystals using a nonlocal lattice particle method (2021)
  5. Voyiadjis, George Z.; Jeong, Juyoung; Kysar, Jeffrey W.: Grain size dependence of polycrystalline plasticity modeling in cylindrical indentation (2021)
  6. Yalçinkaya, Tuncay; Özdemir, İzzet; Tarik Tandoğan, İzzet: Misorientation and grain boundary orientation dependent grain boundary response in polycrystalline plasticity (2021)
  7. Zhu, Xuanchen; Chen, Haofeng; Luan, Weiling: On the study of cyclic plasticity behaviour of primary electrode particle for lithium-ion battery (2021)
  8. Jafaripour, Mostafa; Taheri-Behrooz, Fathollah: Creep behavior modeling of polymeric composites using Schapery model based on micro-macromechanical approaches (2020)
  9. Palizi, Mehrdad; Federico, Salvatore; Adeeb, Samer: Consistent numerical implementation of hypoelastic constitutive models (2020)
  10. Lucarini, S.; Segurado, J.: On the accuracy of spectral solvers for micromechanics based fatigue modeling (2019)
  11. Udhayaraman, R.; Mulay, Shantanu S.: Multi-scale damage framework for textile composites: application to plain woven composite (2019)
  12. Aveiga, David; Ribeiro, Marcelo L.: A delamination propagation model for fiber reinforced laminated composite materials (2018)
  13. Jansen van Rensburg, Gerhardus J.; Kok, Schalk; Wilke, Daniel N.: Modelling multiple cycles of static and dynamic recrystallisation using a fully implicit isotropic material model based on dislocation density (2018)
  14. Teferra, Kirubel; Graham-Brady, Lori: A random field-based method to estimate convergence of apparent properties in computational homogenization (2018)
  15. Fallah, A.; Ahmadian, M. T.; Firozbakhsh, K.; Aghdam, M. M.: Micromechanical modeling of rate-dependent behavior of connective tissues (2017)
  16. Fallah, Ali; Ahmadian, Mohammad Taghi; Mohammadi Aghdam, Mohammad: Rate-dependent behavior of connective tissue through a micromechanics-based hyper viscoelastic model (2017)
  17. Özdemir, İ.: Resistive force theory-based analysis of magnetically driven slender flexible micro-swimmers (2017)
  18. Augustins, L.; Billardon, R.; Hild, F.: Constitutive model for flake graphite cast iron automotive brake discs: induced anisotropic damage model under complex loadings (2016)
  19. Liu, Z. Y.; Dong, C. Y.: Automatic coupling of ABAQUS and a boundary element code for dynamic elastoplastic problems (2016)
  20. Nguyen, Nhung; Waas, Anthony M.: Nonlinear, finite deformation, finite element analysis (2016)

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