STUDY ON THE DUCTILE FRACTURE OF A SURFACE CRACK (1ST REPORT, CRACK GROWTH OF SURFACE CRACK AND THE FINITE ELEMENT ANALYSIS).

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作者：
Kikuchi, Masanori
Nishio, Tamaki
Yano, Kazunori
Machida, Kenji
Miyamoto, Hiroshi
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来源：
Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A | 1988年 / 54卷 / 497期
关键词：
FRACTURE MECHANICS - MATHEMATICAL TECHNIQUES - Finite Element Method;
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摘要：
Ductile fracture of surface crack is studied experimentally and numerically. At first, fatigue pre-crack is introduced and the aspect ratios of the growing fatigue crack are measured. Then the ductile fracture test is carried out and the distributions of SZW and DELTA a are measured. It is noted that DELTA a is largest where phi , the angle from surface, is nearly 30 degree . J integral distribution is evaluated by the finite element method, and it is shown that the J value is also the largest where phi is near 30 degree .
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页码：64 / 70
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