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A New Damage Mechanics Based Approach to Fatigue Life Prediction and its Engineering Application

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Abstract

An approach based on continuum damage mechanics to fatigue life prediction for structures is proposed. A new fatigue damage evolution equation is developed, in which the parameters are obtained in a simple way with reference to the experimental results of fatigue tests on standard specimens. With the utilization of APDL language on the ANSYS platform, a finite element implementation is presented to perform coupling operation on damage evolution of material and stress redistribution. The fatigue lives of some notched specimens and a Pitch-change-link are predicted by using the above approach. The calculated results are validated with experimental data.

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Authors and Affiliations

  1. Institute of Solid Mechanics, School of Aeronautics Science and Engineering, Beihang University, 100191, Beijing, China

    Fei Shen, Weiping Hu & Qingchun Meng

  2. Institute of Manned Space System, Engineering, China Academy of Space Technology, 100094, Beijing, China

    Miao Zhang

Authors
  1. Fei Shen
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  2. Weiping Hu
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  3. Qingchun Meng
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  4. Miao Zhang
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Corresponding author

Correspondence to Weiping Hu.

Additional information

Project supported by the National Natural Science Foundation of China (No. 11002010).

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Shen, F., Hu, W., Meng, Q. et al. A New Damage Mechanics Based Approach to Fatigue Life Prediction and its Engineering Application. Acta Mech. Solida Sin. 28, 510–520 (2015). https://doi.org/10.1016/S0894-9166(15)30046-X

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  • DOI: https://doi.org/10.1016/S0894-9166(15)30046-X

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