PROBABILISTIC SIMULATION OF FATIGUE CRACK-GROWTH BY DAMAGE ACCUMULATION

被引：12

作者：

ELLYIN, F

FAKINLEDE, CO

机构：

[1] Univ of Alberta, Dep of Mechanical, Engineering, Edmonton, Alberta, Can, Univ of Alberta, Dep of Mechanical Engineering, Edmonton, Alberta, Can

来源：

ENGINEERING FRACTURE MECHANICS | 1985年 / 22卷 / 04期

关键词：

FATIGUE OF MATERIALS - Mathematical Models - PROBABILITY - Analysis;

D O I：

10.1016/0013-7944(85)90133-X

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A fatigue crack growth simulation model based on probabilistic damage accumulation is presented. The modified weakest-link hypothesis determines the reinitiation of voids ahead of the crack, which in turn determines the crack advance. From a linearly cumulated-damage standpoint, this is shown to be approximated by a statistical Miner's law. The historical damage on the material elements at the crack-tip vicinity, neglected in previous analysis, is quantified, and shown to be significant. The model includes a prediction of the fatigue threshold stress-intensity factor range, and a comparison with published crack growth rate data for three different structural metals.

引用

页码：697 / 712

页数：16

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