Crack growth under alternating loading

被引：4

作者：

Tikhomirov, V. M. ^{[1
]}

机构：

[1] Siberian State Univ Means Commun, Novosibirsk 630049, Russia

来源：

JOURNAL OF APPLIED MECHANICS AND TECHNICAL PHYSICS | 2008年 / 49卷 / 05期

关键词：

alternating loading; fatigue crack; initial crack opening; stress intensity factor;

D O I：

10.1007/s10808-008-0106-3

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Crack propagation under alternating loading is investigated. Relations between the growth rate of a fatigue defect and loading parameters and the expression for the stress intensity factor are derived for compression of a cracked solid taking into account the possible contact of the crack faces. A model for the deformation of a small region near the crack tip is proposed which allows one to formulate the conditions of residual opening of a growing fatigue crack. The experimental data obtained in tests of steel samples are compared with the results of calculation using the developed procedure.

引用

页码：864 / 871

页数：8

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