Expected principal stress directions under multiaxial random loading. Part I: theoretical aspects of the weight function method

被引：78
作者：
Carpinteri, A
Macha, E
Brighenti, R
Spagnoli, A
机构：
[1] Univ Parma, Dept Civil Engn, I-43100 Parma, Italy
[2] Tech Univ Opole, Dept Mech & Mach Design, PL-45233 Opole, Poland
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 1999年 / 21卷 / 01期
关键词：
principal stress directions; multiaxial random loading; Euler angles; weight function method; critical plane approach; fatigue fracture plane;
D O I：
10.1016/S0142-1123(98)00046-2
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
As has been observed experimentally by many authors, the position of the fatigue fracture plane appears to strongly depend on the directions of the principal stresses or strains. In Part I of the present work the expected principal stress directions under multiaxial random loading are theoretically obtained by averaging the instantaneous values of the three Euler angles through some suitable weight functions which are assumed to take into account the main factors-influencing fatigue behaviour. Then, in Part II, it is examined how such theoretical principal directions determined by applying the proposed procedure are correlated to the position of the experimental fracture plane for some fatigue tests reported in the literature. (C) 1998 Elsevier Science Ltd. All rights reserved.
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收藏
页码：83 / 88
页数：6
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