Applied Mathematics and Mechanics (English Edition) ›› 2015, Vol. 36 ›› Issue (12): 1539-1554.doi: https://doi.org/10.1007/s10483-015-2002-6

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

Fei SHEN, Weiping HU, Qingchun MENG   

  1. Institute of Solid Mechanics, School of Aeronautics Science and Engineering, Beihang University, Beijing 100191, China
  • 收稿日期:2014-08-21 修回日期:2015-06-03 出版日期:2015-12-01 发布日期:2015-12-01
  • 通讯作者: Weiping HU E-mail:huweiping@buaa.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China(No. 11002010)

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

Fei SHEN, Weiping HU, Qingchun MENG   

  1. Institute of Solid Mechanics, School of Aeronautics Science and Engineering, Beihang University, Beijing 100191, China
  • Received:2014-08-21 Revised:2015-06-03 Online:2015-12-01 Published:2015-12-01
  • Contact: Weiping HU E-mail:huweiping@buaa.edu.cn
  • Supported by:
    Project 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 SmithWatson-Topper(SWT) method.

关键词: fretting fatigue, finite element(FE) analysis, continuum damage mechanics, fatigue life, wear

Abstract: 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 SmithWatson-Topper(SWT) method.

Key words: wear, fretting fatigue, fatigue life, continuum damage mechanics, finite element(FE) analysis

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