Combined creep and plastic analysis with numerical methods

E. Pineda León, J. Zapata Lopez, A. Kryvko

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The combination of plastic and creep analysis formulation are developed in this paper. The boundary element method and the finite element method are applied in plates in order to do the numerical analysis. This new approach is developed to combine the constitutive equation for time hardening creep and the constitutive equation for plasticity, which is based on the von Mises criterion and the Prandtl-Reuss flow. The implementation of creep strain in the formulation is achieved through domain integrals. The creep phenomenon takes place in the domain which is discretized into quadratic quadrilateral continuous and discontinuous cells. The creep analysis is applied to metals with a power law creep for the secondary creep stage. Results obtained for three models studied are compared to those published in the literature. The obtained results are in good agreement and evinced that the Boundary Element Method could be a suitable tool to deal with combined nonlinear problems.

Original languageEnglish
Title of host publicationComputational Plasticity XII
Subtitle of host publicationFundamentals and Applications - Proceedings of the 12th International Conference on Computational Plasticity - Fundamentals and Applications, COMPLAS 2013
Pages801-810
Number of pages10
StatePublished - 2013
Externally publishedYes
Event12th International Conference on Computational Plasticity: Fundamentals and Applications, COMPLAS 2013 - Barcelona, Spain
Duration: 3 Sep 20135 Sep 2013

Publication series

NameComputational Plasticity XII: Fundamentals and Applications - Proceedings of the 12th International Conference on Computational Plasticity - Fundamentals and Applications, COMPLAS 2013

Conference

Conference12th International Conference on Computational Plasticity: Fundamentals and Applications, COMPLAS 2013
Country/TerritorySpain
CityBarcelona
Period3/09/135/09/13

Keywords

  • Boundary element method
  • Creep
  • Nonlinear behavior
  • Plasticity
  • Plates

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