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ON CORRECT ACCOUNT OF FINITE ROTATIONS IN FINITE PLASTICITY THEORY 被引量:2
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作者 V.I.LEVITAS (Institute of Superhard Materials of the Ukrainian Academy of Sciences,Kiev,Ukraine) 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 1992年第3期253-260,共8页
The non-uniqueness of the transition from nonobjective constitutive relations to objective ones with the use of the principle of material frame-indifference(PMFI)is shown.To eliminate it,the concept of finite strain w... The non-uniqueness of the transition from nonobjective constitutive relations to objective ones with the use of the principle of material frame-indifference(PMFI)is shown.To eliminate it,the concept of finite strain without rotations(FSWR)for a given material type and each strain component(elastic,plastic) is introduced.In FSWR the rotation is excluded with respect to the natural preferred configuration for a given material.Considered are a simple solid,a liquid,a mouocrystal,a polycrystal and a composite.The procedure is proposed lbr consistent generalization of known infinitesimal relations for finite strains and rota- tions.The structure of constitutive relations is derived for anisotropic elasto-plastic mono-and polycrystalline materials. 展开更多
关键词 finite rotation finite plasticity material frame-indifference constitutive relations objective derivatives
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