Probabilistic fracture mechanics with uncertainty in crack size and orientation using the scaled boundary finite element method

被引：24

作者：

Chowdhury, Morsaleen Shehzad ^{[1
]}

Song, Chongmin ^{[1
]}

Gao, Wei ^{[1
]}

机构：

[1] Univ New S Wales, Sch Civil & Environm Engn, Ctr Infrastruct Engn & Safety, Sydney, NSW 2052, Australia

来源：

COMPUTERS & STRUCTURES | 2014年 / 137卷

基金：

澳大利亚研究理事会;

关键词：

Scaled boundary finite element method; Probabilistic fracture mechanics; Uncertainties; Shape sensitivity; Reliability; CONTINUUM SHAPE SENSITIVITY; STRESS INTENSITY FACTORS; FUNCTIONALLY GRADED MATERIALS; GALERKIN MESHLESS METHODS; ENERGY-RELEASE RATES; EXTENSION METHOD; RELIABILITY ANALYSES; WAVE-GUIDE; DERIVATIVES; SINGULARITIES;

D O I：

10.1016/j.compstruc.2013.03.002

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The geometry of cracks in a structure are often difficult to determine accurately, leading to uncertainties in structural analysis. This paper presents a probabilistic fracture mechanics (PFM) approach to evaluate the reliability of cracked structures considering the uncertainty in crack geometry. The shape sensitivity analysis of the stress intensity factor (SIF) is performed efficiently using the scaled boundary finite element method (SBFEM). No remeshing is required as the size and orientation of a crack vary. Reliability is estimated using various probabilistic techniques. Numerical examples demonstrate the accuracy and simplicity of the present method. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：93 / 103

页数：11

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