RESEARCH ON THE CHOICE OF SLIP SYSTEM AT CRACK TIP

›› 1993, Vol. 29 ›› Issue (2): 91-96.

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RESEARCH ON THE CHOICE OF SLIP SYSTEM AT CRACK TIP

Yao Kefu;Chen Nanping

University of Science and Technology Beijing Qinghua University

Published:1993-03-01

Abstract

Abstract: The resolved shear stress along the slip direction of a slip system in the crack tip region was deduced, and the crack tip Schmid factor was defined. When the crack tip emitted dislocations, the choice of slip systems at crack tip depended on the crack tip Schmid factor. And in the vicinity of crack tip. When dislocation sources were activated or cross slip of screw dislocation was taken placed, the choice of slip systems also depended on the crack tip Schmid factor.

Key words: Crack propagation, Fracture mechanics, Stress field

Yao Kefu;Chen Nanping. RESEARCH ON THE CHOICE OF SLIP SYSTEM AT CRACK TIP[J]. , 1993, 29(2): 91-96.

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RESEARCH ON THE CHOICE OF SLIP SYSTEM AT CRACK TIP

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