ON THE STUDY OF THE INITIATION OF THE MICRO CRACK ON THE SMOOTH SURFACE OF POLYCRYSTALLINE

Applied Mathematics and Mechanics (English Edition) ›› 2004, Vol. 25 ›› Issue (8): 887-893.

ON THE STUDY OF THE INITIATION OF THE MICRO CRACK ON THE SMOOTH SURFACE OF POLYCRYSTALLINE

岳珠峰

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

收稿日期:2003-01-12 修回日期:2004-03-30 出版日期:2004-08-18 发布日期:2004-08-18
基金资助:
the National Natural Science Foundation of China(50005016,50375124)

ON THE STUDY OF THE INITIATION OF THE MICRO CRACK ON THE SMOOTH SURFACE OF POLYCRYSTALLINE

YUE Zhu-feng

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

Received:2003-01-12 Revised:2004-03-30 Online:2004-08-18 Published:2004-08-18
Supported by:
the National Natural Science Foundation of China(50005016,50375124)

摘要/Abstract

摘要： Crystallographic plasticity was applied to study the initiation of micro cracks on the smooth surface of polycrystalline under uniform applied stress. Even under the uniform external stress, due to the different crystallographic orientations of the grains in the polycrystalline, there is un-uniform stress distribution and the deformation is also not uniform. Under the fatigue loading, the roughness increases with the number of fatigue, and deformation will localize in some places, where micro cracks form.

关键词: crystallographic plastics, micro fatigue crack, initiation, roughness, localization

Abstract: Crystallographic plasticity was applied to study the initiation of micro cracks on the smooth surface of polycrystalline under uniform applied stress. Even under the uniform external stress, due to the different crystallographic orientations of the grains in the polycrystalline, there is un-uniform stress distribution and the deformation is also not uniform. Under the fatigue loading, the roughness increases with the number of fatigue, and deformation will localize in some places, where micro cracks form.

Key words: crystallographic plastics, micro fatigue crack, initiation, roughness, localization

中图分类号:

TG116

岳珠峰. ON THE STUDY OF THE INITIATION OF THE MICRO CRACK ON THE SMOOTH SURFACE OF POLYCRYSTALLINE[J]. Applied Mathematics and Mechanics (English Edition), 2004, 25(8): 887-893.

YUE Zhu-feng . ON THE STUDY OF THE INITIATION OF THE MICRO CRACK ON THE SMOOTH SURFACE OF POLYCRYSTALLINE[J]. Applied Mathematics and Mechanics (English Edition), 2004, 25(8): 887-893.

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ON THE STUDY OF THE INITIATION OF THE MICRO CRACK ON THE SMOOTH SURFACE OF POLYCRYSTALLINE

ON THE STUDY OF THE INITIATION OF THE MICRO CRACK ON THE SMOOTH SURFACE OF POLYCRYSTALLINE

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