On Plastic Anisotropy of Constitutive Model for Rate-Dependent Single Crystal

ZHANG Guang; ZHANG Ke-shi; FENG Lu

Volume 26 Issue 1

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ZHANG Guang, ZHANG Ke-shi, FENG Lu. On Plastic Anisotropy of Constitutive Model for Rate-Dependent Single Crystal[J]. Applied Mathematics and Mechanics, 2005, 26(1): 111-119.

Citation:

ZHANG Guang, ZHANG Ke-shi, FENG Lu. On Plastic Anisotropy of Constitutive Model for Rate-Dependent Single Crystal[J]. Applied Mathematics and Mechanics, 2005, 26(1): 111-119.

Citation:

ZHANG Guang, ZHANG Ke-shi, FENG Lu. On Plastic Anisotropy of Constitutive Model for Rate-Dependent Single Crystal[J]. Applied Mathematics and Mechanics, 2005, 26(1): 111-119.

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On Plastic Anisotropy of Constitutive Model for Rate-Dependent Single Crystal

1.
Department of Applied Mechanics, Northwestern Polytechnical University, Xi'an, 710072, P. R. China;

Received Date: 2003-04-08
Rev Recd Date: 2004-09-17
Publish Date: 2005-01-15

Abstract

Abstract

An algorithm for single crystals was developed and implemented to simulate plastic anisotropy using a rate-dependent slip model.The proposed procedure was a slightly modified form of single crystal constitutive model of Sarma and Zacharia.Modified Euler method,together with New ton-Raphson method was used to integrate this equation which was stable and efficient.The model together with the developed algorithm was used to study three problems.First,plastic anisotropy was examined by simulating the crystal deformation in tension and plane strain compression respectively.Secondly,the orientation effect of some material parameters in the model and applied strain rate on plastic anisotropy for single crystal also is investigated.Thirdly,the influence of loading direction on the active slip system was discussed.
- constitutive behavior,
- crystal plasticity,
- anisotropy

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References(12)

References

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