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Mathematical Problems in Engineering
Volume 2016, Article ID 1254037, 9 pages
http://dx.doi.org/10.1155/2016/1254037
Research Article

Research on the Fatigue Life Prediction Method of Thrust Rod

1State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
2Aircraft Control Department, Aviation University Air Force, Changchun 130022, China
3School of Automotive Engineering, Shandong Jiaotong University, Jinan 250023, China
4China FAW Group Corporation R&D Center, Changchun 130011, China
5Changchun Chengyuan Auto Parts Limited Company, Changchun 130114, China

Received 20 June 2016; Accepted 22 September 2016

Academic Editor: Mitsuhiro Okayasu

Copyright © 2016 Guoyu Feng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose of this paper is to investigate the fatigue life prediction method of the thrust rod based on the continuum damage mechanics. The equivalent stress used as damage parameters established rubber fatigue life prediction model. Through the finite element simulation and material test, the model parameters and the fatigue damage dangerous positions were obtained. By equivalent stress life model, uniaxial fatigue life of the V-type thrust rod is analyzed to predict the ratio of life and the life of the test was 1.73, within an acceptable range, and the fatigue damage occurring position and finite element analysis are basically the same. Fatigue life analysis shows that the method is of correct, theoretical, and practical value.