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Ting Luo Zhenhua Qin Yang-Ping Yao Xing Feng. Symmetrization and applications of tangent stiffness matrix for UH model[J]. Chinese Journal of Theoretical and Applied Mechanics, 2011, 43(6): 1186-1190. DOI: 10.6052/0459-1879-2011-6-lxxb2010-538
Citation: Ting Luo Zhenhua Qin Yang-Ping Yao Xing Feng. Symmetrization and applications of tangent stiffness matrix for UH model[J]. Chinese Journal of Theoretical and Applied Mechanics, 2011, 43(6): 1186-1190. DOI: 10.6052/0459-1879-2011-6-lxxb2010-538
shu

Symmetrization and applications of tangent stiffness matrix for UH model

  • School of Transportation Science and Engineering, Beihang University, Beijing 100191, China

  • Received Date: August 22, 2010
  • Revised Date: June 19, 2011
    Graphical Abstract
    • Abstract
  • Several common three-dimensional generalized methods for constitutive models and the superiority of the transformed stress (TS) method are analyzed in this paper. The non-associated flow of constitutive model based on the TS method is analyzed in detail. The symmetrization method of tangential stiffness matrix for the constitutive models is proposed. The essence of the constitutive models with non-associated flow of tangential stiffness matrix is the same as original one using the symmetrization method. The finite element analysis to some triaxial extension tests is carried out. Based on the analysis and the comparison, it is found that the symmetrization method of tangential stiffness matrix can improve the convergence of finite element analysis and reduce simulation time obviously.
      Keywords:
    • FEM
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