Applied Mathematics and Mechanics (English Edition) ›› 1984, Vol. 5 ›› Issue (4): 1425-1435.

• 论文 •    下一篇

TIME-INDEPENDENT ANISOTROPIC PLASTIC BEHAVIOR BY MECHANICAL SUBELEMENT MODELS

Theodore H. H. Pian   

  1. Massachusetts Institute of Technology
  • 收稿日期:1983-05-19 出版日期:1984-07-18 发布日期:1984-07-18

TIME-INDEPENDENT ANISOTROPIC PLASTIC BEHAVIOR BY MECHANICAL SUBELEMENT MODELS

Theodore H. H. Pian   

  1. Massachusetts Institute of Technology
  • Received:1983-05-19 Online:1984-07-18 Published:1984-07-18

摘要: The paper describes a procedure for modelling the aniso-tropic elastic-plastic behavior of metals in plane stress state by the mechanical sub-layer model. In this model the stress-strain curves along the longitudinal and transverse directions are represented by short smooth segments which are considered as piecewise linear for simplicity. The model is incorporated in a finite element analysis program which is based on the assumed stress hybrid element and the viscoplasticity theory.

关键词: fuzzy variable, fuzzy arithmetic, fuzzy finite element method, interval finite element method

Abstract: The paper describes a procedure for modelling the aniso-tropic elastic-plastic behavior of metals in plane stress state by the mechanical sub-layer model. In this model the stress-strain curves along the longitudinal and transverse directions are represented by short smooth segments which are considered as piecewise linear for simplicity. The model is incorporated in a finite element analysis program which is based on the assumed stress hybrid element and the viscoplasticity theory.

Key words: fuzzy variable, fuzzy arithmetic, fuzzy finite element method, interval finite element method

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