Experimental and finite element analysis of stress amplitude on fretting fatigue behavior of Al-Zn-Mg alloy

被引：0
作者：
Jiang, Xiaosong [1 ]
Li, Jingrui [1 ]
Liu, Wanxia [1 ]
Zhu, Degui [1 ]
机构：
[1] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Chengdu 610031, Sichuan, Peoples R China
来源：
OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS | 2017年 / 11卷 / 3-4期
基金：
中国国家自然科学基金;
关键词：
Al-Zn-Mg alloy; Fretting fatigue; Finite element analysis; Point contact; ANSYS; FRACTURE; DAMAGE; SLIP;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Fretting fatigue behavior of Al-Zn-Mg alloy is investigated with experimental and finite element analysis. Fretting fatigue tests are systematically performed for Al-Zn-Mg alloy, and effects of stress amplitude on fretting fatigue characteristics and fretting fatigue lives are emphatically researched. The results indicate when its contact stress is 180MPa, with increasing of stress amplitude, the degree of cyclic softening increases, and fretting fatigue lives decrease with increase of stress amplitude. Based on fretting fatigue test apparatus with point contact, ANSYS finite element analysis is used to analyze stress distribution by numerical study using 2D finite element method. The calculation results indicate that there are sticking region, sliding region and opening region on contact surface with stress amplitude changing during other test parameters are invariable. The sticking region, sliding region and opening region change with stress amplitude changing. The tensile stress and shear stress change very fiercely at the mixing region between sticking region and sliding region where the propagating cracks would nucleate at the region. The predicted fretting fatigue behavior of Al-Zn-Mg alloy show good agreement with experimental results.
引用
收藏
页码：267 / 273
页数：7
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