A FUNCTIONAL-APPROACH TO NONLOCAL STRENGTH CONDITIONS AND FRACTURE CRITERIA .1. BODY AND POINT FRACTURE

被引:23
作者
MIKHAILOV, SE
机构
[1] Department of Theoretical Mechanics, Moscow State University of Technology STANKIN, 3-A, Vadkovsky per., Moscow
关键词
D O I
10.1016/0013-7944(95)00012-K
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
A general form of non-local strength condition based on a nonlinear space strength functional is proposed, and its relation with some known non-local strength conditions is discussed. The strength functional is associated with the supremum of a positive factor by which a given stress field may be multiplied to obtain a non-fracturing stress field. Mathematical constraints on the functional form caused by the demand of functional boundedness on admissible stress fields are explored. The notions of strength homogeneity, strength isotropy and finite non-locality for non-local strength conditions are introduced.
引用
收藏
页码:731 / 743
页数:13
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