Stress Distribution Near Grain Boundary in Anisotropic Bicrystals and Tricrystals

WAN Jian-song; YUE Zhu-feng

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WAN Jian-song, YUE Zhu-feng. Stress Distribution Near Grain Boundary in Anisotropic Bicrystals and Tricrystals[J]. Applied Mathematics and Mechanics, 2004, 25(1): 35-41.

Citation:

WAN Jian-song, YUE Zhu-feng. Stress Distribution Near Grain Boundary in Anisotropic Bicrystals and Tricrystals[J]. Applied Mathematics and Mechanics, 2004, 25(1): 35-41.

Citation:

WAN Jian-song, YUE Zhu-feng. Stress Distribution Near Grain Boundary in Anisotropic Bicrystals and Tricrystals[J]. Applied Mathematics and Mechanics, 2004, 25(1): 35-41.

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Stress Distribution Near Grain Boundary in Anisotropic Bicrystals and Tricrystals

Department of Engineering Mechanics, Northwestern Polytechnical University, Xi'an 710072, P. R. China

Received Date: 2001-10-16
Rev Recd Date: 2003-08-07
Publish Date: 2004-01-15

Abstract

Abstract

The rate dependent crystallographic finite element program was implemented in ABAQUS as a UMAT for the analysis of the stress distributions near grain boundary in anisotropic bicrystals and tricrystals,taking the different crystallographic orientations into consideration.The numerical results of bicrystaLs model with the different crystallographic orientations shows that there is a high stress gradient near the grain boundaries.The characteristics of stress structures are dependent on the crystallographic orientations of the two grains.The eadsting of triple Junctions in the tricrystals may result in the stress concentrations,or may not,depending on the crystallographic orientations of the three grains.The conclusion shows that grain boundary with different crystallographic orientations can have different deformation,damage,and failure behaviors.So It is only on the detail study of the stress distribution can the metal fracture be understood deeply.
- bicrystal,
- trlcrystal,
- stress field,
- rate dependent crystallographic finite element,
- slip system

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References(10)

References

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