New approach based on continuum damage mechanics with simple parameter identification to fretting fatigue life prediction  

作　　者：Fei SHEN Weiping HU Qingchun MENG 

机构地区：[1]Institute of Solid Mechanics, School of Aeronautics Science and Engineering,Beihang University

出　　处：《Applied Mathematics and Mechanics(English Edition)》2015年第12期1539-1554,共16页应用数学和力学（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.11002010)

摘　　要：A new continuum damage mechanics model for fretting fatigue life prediction is established. In this model, the damage evolution rate is described by two kinds of quantities. One is associated with the cyclic stress characteristics obtained by the finite element （FE） analysis, and the other is associated with the material fatigue property identified from the fatigue test data of standard specimens. The wear is modeled by the energy wear law to simulate the contact geometry evolution. A two-dimensional （2D） plane strain FE implementation of the damage mechanics model and the energy wear model is presented in the platform of ABAQUS to simulate the evolutions of the fatigue damage and the wear scar. The effect of the specimen thickness is also investigated. The predicted results of the crack initiation site and the fretting fatigue life agree well with available experimental data. Comparisons are made with the critical plane Smith- Watson-Topper （SWT） method.A new continuum damage mechanics model for fretting fatigue life prediction is established. In this model, the damage evolution rate is described by two kinds of quantities. One is associated with the cyclic stress characteristics obtained by the finite element （FE） analysis, and the other is associated with the material fatigue property identified from the fatigue test data of standard specimens. The wear is modeled by the energy wear law to simulate the contact geometry evolution. A two-dimensional （2D） plane strain FE implementation of the damage mechanics model and the energy wear model is presented in the platform of ABAQUS to simulate the evolutions of the fatigue damage and the wear scar. The effect of the specimen thickness is also investigated. The predicted results of the crack initiation site and the fretting fatigue life agree well with available experimental data. Comparisons are made with the critical plane Smith- Watson-Topper （SWT） method.

关 键 词：fretting fatigue continuum damage mechanics WEAR fatigue life finite element （FE） analysis 

分 类 号：O346.2[理学—固体力学] V215.5[理学—力学]