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FEA based durability using strain-life models for different medium carbon steel as fabrication materials for an automotive component

Al-Asady, N. A., and Abdullah S., and Ariffin A.K., and Beden, S.M., and Rahman M.M., (2009) FEA based durability using strain-life models for different medium carbon steel as fabrication materials for an automotive component. International Journal of Mechanical and Materials Engineering, 4 (2). pp. 141-146. ISSN 1823-0334

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Official URL: http://ejum.fsktm.um.edu.my/ArticleInformation.aspx?ArticleID=774

Affiliations

Universiti Kebangsaan Malaysia, Dept. of Mechanical and Materials Engineering
Universiti Kebangsaan Malaysia, Dept. of Mechanical and Materials Engineering
Universiti Kebangsaan Malaysia, Dept. of Mechanical and Materials Engineering
Universiti Kebangsaan Malaysia, Dept. of Mechanical and Materials Engineering
Universiti Malaysia Pahang, Dept. of Mechanical Engineering

Abstract

There has been a strong trend towards the adoption of optimum materials and components in automotive industry. Automotive designers have a wide range of materials and processes to select from. Fatigue assessment of SAE1541_362_QT and SAE1045_390_QT steels for automotive component particularly for a lower suspension arm, have been numerically studied using finite element analysis under random loading conditions. Both Morrow and Smith-Watson-Topper (SWT) strain-life models have been used for live estimation. These two models were often been used in the fatigue life assessment for metallic components. The results of this paper are based on analytical investigations, including detailed finite element strain analysis as well as fatigue and optimisation studies. Comparison of predicted lives indicates that the SWT-based estimation analysis method gave longer life than the Morrow estimation. In addition, steel for fabricate the lower suspension arm gave higher durability compared to SAE1541_362_QT steel. Such results provide further credit to the appropriately of using SWT as a prediction model, as well as, SAE1045_390_QT steel as a fabrication material of the automobile lower suspension arm.

Item Type:Journal
Keywords:Fatigue life assessment; Finite element; medium carbon steel; Lower suspension arm; Variable amplitude loading.
Subjects:T Technology, Engineering
ID Code:10288

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