Multidiscipline Modeling in Materials, Volume (7), No (3), Year (2011-10) , Pages (266-305)

Title : ( Integration of nonlinear mixed hardening models )

Authors: Mohaamad Rezaiee Pajand , Cyrus Nasirai , Mehrzad Sharifian Torghabeh ,

Citation: BibTeX | EndNote


Purpose – The purpose of this paper is to present a new effective integration method for cyclic plasticity models. Design/methodology/approach – By defining an integrating factor and an augmented stress vector, the system of differential equations of the constitutive model is converted into a nonlinear dynamical system, which could be solved by an exponential map algorithm. Findings – The numerical tests show the robustness and high efficiency of the proposed integration scheme. Research limitations/implications – The von-Mises yield criterion in the regime of small deformation is assumed. In addition, the model obeys a general nonlinear kinematic hardening and an exponential isotropic hardening. Practical implications – Integrating the constitutive equations in order to update the material state is one of the most important steps in a nonlinear finite element analysis. The accuracy of the integration method could directly influence the result of the elastoplastic analyses. Originality/value – The paper deals with integrating the constitutive equations in a nonlinear finite element analysis. This subject could be interesting for the academy as well as industry. The proposed exponential-based integration method is more efficient than the classical strategies.


, Differential equations, Vectors, Plasticity, Exponential based integration method, Discrete consistent tangent matrix, Cyclic plasticity, Nonlinear mixed hardening, Exponential isotropic hardening
برای دانلود از شناسه و رمز عبور پرتال پویا استفاده کنید.

author = {Rezaiee Pajand, Mohaamad and Cyrus Nasirai and Sharifian Torghabeh, Mehrzad},
title = {Integration of nonlinear mixed hardening models},
journal = {Multidiscipline Modeling in Materials},
year = {2011},
volume = {7},
number = {3},
month = {October},
issn = {1573-6105},
pages = {266--305},
numpages = {39},
keywords = {Differential equations; Vectors; Plasticity; Exponential based integration method; Discrete consistent tangent matrix; Cyclic plasticity; Nonlinear mixed hardening; Exponential isotropic hardening},


%0 Journal Article
%T Integration of nonlinear mixed hardening models
%A Rezaiee Pajand, Mohaamad
%A Cyrus Nasirai
%A Sharifian Torghabeh, Mehrzad
%J Multidiscipline Modeling in Materials
%@ 1573-6105
%D 2011