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Finite Element Based Fatigue Life Prediction of a New Free Piston Engine Mounting

M. M., Rahman and M. M., Noor and A. K., Ariffin and Ummu Kulthum, Jamaludin and S., Abdullah (2008) Finite Element Based Fatigue Life Prediction of a New Free Piston Engine Mounting. Journal of Applied Sciences , 9 (8). pp. 1612-1621. ISSN 1812-5654

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Abstract

This study presents the finite element based fatigue life prediction of a new free piston linear generator engine mounting. The objective of this research is to assess the critical fatigue locations on the component due to loading conditions. The effects of mean stress and probabilistic nature on the fatigue life are also investigated. Materials SAE 1045-450-QT and SAE1045-595-QT are considered in this study. The finite element modeling and analysis was performed using computer-aided design and finite element analysis codes. In addition, the fatigue life prediction was carried out utilizing the finite element based fatigue code. Total-life approach and crack initiation approach were applied to predict the fatigue life of the free piston linear engine mounting. The results show the contour plots of fatigue life and damage histogram at the most damaging case. The comparison between the total-life approach and crack initiation approach were investigated. From the results, it can be concluded that Morrow mean stress correction method gives the most conservative (less life) results for crack initiation method. It can be seen that SAE 1045-595-QT material gives consistently higher life than SAE 1045-450-QT material for all loading conditions for both methods. TsTov wmrvlfi* Tn'catirrn** lift* finite plpmpnt Gtr*^GG_1iT*^ nrcmtr initicatirwi linear o-*an*at*catrw pnmnp

Item Type: Article
Additional Information: A.K. Ariffin, N. Jamaludin, S. Abdullah from Department of Mechanical and Materials Engineering, Faculty of Engineering, Universiti Kebangsaan Malaysia Prof. Dr. Md Mustafizur Rahman (M. M. Rahman) Muhamad Mat Noor (M. M. Noor)
Uncontrolled Keywords: fatigue life, finite element,stress-life, crack initiation, linear generator engine
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Zairi Ibrahim
Date Deposited: 02 Jun 2011 03:36
Last Modified: 30 Nov 2018 01:44
URI: http://umpir.ump.edu.my/id/eprint/1249
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