A METHOD FOR LOW-CYCLE FATIGUE LIFE ASSESSMENT OF METALLIC MATERIALS UNDER MULTIAXIAL LOADING

被引：1
|
作者：
Shukaev, S. [1 ]
Gladskii, M. [1 ]
Zakhovaiko, A. [1 ]
Panasovskii, K. [1 ]
机构：
[1] Natl Tech Univ Ukraine, Kiev Polytech Inst, Inst Engn Mech, Dept Machine Dynam & Strength Mat, Kiev, Ukraine
来源：
STRENGTH OF MATERIALS | 2008年 / 40卷 / 01期
关键词：
multiaxial low-cycle fatigue; irregular loading; titanium alloys; damage accumulation; limit state criteria;
D O I：
10.1007/s11223-008-0013-0
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A new method of fatigue life assessment under multiaxial low-cycle regular and irregular loading is proposed, which is based on the modified Pisarenko-Lebedev criterion, the linear damage accumulation hypothesis, and the nonlinear Manson approach. The results of low-cycle fatigue tests of titanium alloy VT9 under irregular proportional and non-proportional biaxial loading are given. The tests were carried out at three Mises strain levels (0.6, 0.8, and 1.0%) with various combinations of proportional and non-proportional strain paths. All the tests were carried out at room temperature. The proposed method turned out to be effective and to allow for such factors as strain state type, strain path type and loading irregularity.
引用
收藏
页码：48 / 51
页数：4
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