材料の微視構造を考慮した解析全盛の時代において巨視的塑性論の存在意義は薄れたのか?(OS4 微視構造を有する材料の変形と破壊)

概要

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The computational solid mechanics has been much developed recently, taking into account various aspects of physical structures of materials, which are understood from observations at the mesoscale. For example, recently, methods for solving plasticity problems with plastic flow represented by the collective motion of a large number of dislocations have been presented. Various methods that combine the crystal plasticity model with dislocation theories have been proposed also. Under this situation, a question arises. Is the importance of the macroscopic or phenomenological theories of plasticity reducing? In this article, first, theories of discrete dislocation plasticity, crystal plasticity and macroscopic plasticity, as well as their recent developments, are comprehensively reviewed. Then, the meaning and roles of the macroscopic theories of plasticity in the future are discussed.
社団法人日本機械学会の論文
2004-07-20