期刊
MATERIALS
卷 13, 期 21, 页码 -出版社
MDPI
DOI: 10.3390/ma13214850
关键词
multiaxial loading; strain; fatigue; multiaxial criteria; cyclic loading
类别
资金
- National Science Centre (Poland) [2015/19/B/ST8/01115]
The main purpose of this paper is to propose, based on the literature review, a new multiaxial fatigue strain criterion, analogous to the Dang Van stress criterion, considering the maximum amplitude of the shear strain and volumetric strain. The proposed strain criterion was successfully verified by fatigue tests in cyclic bending with torsion of specimens made of 2017A-T4 and 6082-T6 aluminum alloy. The scatter of test results for cyclic bending and the combination of cyclic bending and torsion is included in the scatter of tests for the cyclic torsion of the analyzed materials. Fracture surfaces for respective bending and torsion in the 6082-T6 aluminum test with strain control showed that, in the case of bending, cracks can be observed that develop from the surface of the specimen towards the bending plane. They are inclined from the fatigue crack at an angle of 45 degrees in relation to the crack surface and the remaining cracks come from the static fracture. In the case of torsion, however, a conical fracture at 45 degrees and a static torsion zone can be observed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据