Crystal plasticity modeling of fretting fatigue behavior of an aluminum alloy

被引：17
作者：
Wang, Jian [1 ,2 ]
Chen, Tianju [3 ]
Zhou, Caizhi [3 ,4 ]
机构：
[1] Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang 621010, Sichuan, Peoples R China
[2] Southwest Univ Sci & Technol, Shock & Vibrat Engn Mat & Struct Key Lab Sichuan, Mianyang 621010, Sichuan, Peoples R China
[3] Missouri Univ Sci & Technol, Dept Mat Sci & Engn, Rolla, MO 65409 USA
[4] Univ South Carolina, Dept Mech Engn, Columbia, SC 29208 USA
来源：
TRIBOLOGY INTERNATIONAL | 2021年 / 156卷
关键词：
Fretting fatigue; Crystal plasticity; Crack initiation; Dislocation density; FINITE-ELEMENT-ANALYSIS; CRACK INITIATION MECHANISM; CONTINUUM DAMAGE MECHANICS; PERSISTENT SLIP BANDS; SURFACE-ENERGY; STORED ENERGY; CONTACT; NUCLEATION; PREDICTION; CRITERION;
D O I：
10.1016/j.triboint.2020.106841
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Aluminum alloy (AA)7075 is widely used to fabricate parts and components on aircrafts, which are subjected to contact loading that may induce fretting fatigue and catastrophic failure. In this work, a crystal plasticity finite element (CPFE) model accounting for the microstructural features is developed for simulating the fretting fatigue of AA7075-T651. A submodel technology is adopted to refine the contact region to obtain more accurate simulation data. An energy-based criterion is developed for prediction of crack initiation life. The hotspots for the fretting fatigue crack nucleation are identified by the maximum of plastic strain energy density. The proposed CPFE model achieves high accuracy on predicting the fretting fatigue crack initiation and validated by fretting fatigue experimental results.
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页数：13
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