Multiaxial high-cycle fatigue life prediction model considering mean shear stress effect under constant and variable amplitude loading

被引：16

作者：

Wang, Xiao-Wei ^{[1
]}

Shang, De-Guang ^{[1
]}

Sun, Yu-Juan ^{[1
]}

Chen, Hong ^{[2
]}

机构：

[1] Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China

[2] Aircraft Strength Res Inst China, Xian 710065, Shaanxi, Peoples R China

来源：

THEORETICAL AND APPLIED FRACTURE MECHANICS | 2018年 / 96卷

基金：

中国国家自然科学基金;

关键词：

Fatigue experiments; High-cycle fatigue life prediction; Weight average method; Mean shear stress effect; Variable amplitude loading; CRITICAL PLANE; FRACTURE PLANE; CRITERION; METALS; LIMIT; STRENGTH; DAMAGE;

D O I：

10.1016/j.tafmec.2017.10.007

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this paper, load controlled uniaxial, pure torsion, constant and variable amplitude tension torsion tests on 7075-T651 aluminum alloy tubular specimens were conducted. According to the analysis of the experimental data obtained, a multiaxial high-cycle fatigue life prediction model, based on the critical plane method and considering mean shear stress effect, is proposed. The critical plane is proposed to be determined by a weight average, which is based on the variation of the maximum shear stress. The estimated fatigue lives obtained by applying the proposed model, for the fatigue limits related to 10(6), 2 x 10(6) and 10(7) cycles, are compared. The results demonstrate that the proposed model shows a good predictive capability.

引用

页码：676 / 687

页数：12

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