Probabilistic fracture mechanics for nonlinear structures

被引：37

作者：

Rahman, S ^{[1
]}

Kim, JS ^{[1
]}

机构：

[1] Univ Iowa, Dept Engn Mech, Seamans Ctr 2140, Iowa City, IA 52242 USA

来源：

INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING | 2001年 / 78卷 / 04期

关键词：

probabilistic fracture mechanics; elastic-plastic fracture mechanics; J-integral; crack; first-order reliability method; second-order reliability method; Monte Carlo with importance sampling;

D O I：

10.1016/S0308-0161(01)00006-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A probabilistic methodology has been developed for fracture-mechanics analysis of nonlinear cracked structures. The methodology involves nonlinear finite element analysis using well-known commercial codes; statistical models for uncertainty in material constitutive law, fracture toughness, and loads; and standard reliability methods for evaluating probabilistic characteristics of elastic-plastic fracture parameter. Numerical examples are presented to illustrate the proposed methodology for two- and three-dimensional cracked structures. The results from these examples show that the methodology is capable of predicting accurate deterministic and probabilistic characteristics of the J-integral for use in elastic-plastic fracture mechanics (EPFM). (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

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页码：261 / 269

页数：9

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