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

N. A. Al-Asady, Shahrum Abdullah, Ahmad Kamal Ariffin Mohd Ihsan, S. M. Beden, M. M. Rahman

Research output: Contribution to journalArticle

8 Citations (Scopus)

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 SWTbased 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.

Original languageEnglish
Pages (from-to)141-146
Number of pages6
JournalInternational Journal of Mechanical and Materials Engineering
Volume4
Issue number2
Publication statusPublished - 2009

Fingerprint

Steel
Carbon steel
Durability
Fabrication
Suspensions
Fatigue of materials
Automotive industry
Automobiles
Finite element method

Keywords

  • Fatigue life assessment
  • Finite element
  • Lower suspension arm
  • Medium carbon steel
  • Variable amplitude loading

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

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author = "Al-Asady, {N. A.} and Shahrum Abdullah and {Mohd Ihsan}, {Ahmad Kamal Ariffin} and Beden, {S. M.} and Rahman, {M. M.}",
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AU - Al-Asady, N. A.

AU - Abdullah, Shahrum

AU - Mohd Ihsan, Ahmad Kamal Ariffin

AU - Beden, S. M.

AU - Rahman, M. M.

PY - 2009

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N2 - 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 SWTbased 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.

AB - 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 SWTbased 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.

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KW - Medium carbon steel

KW - Variable amplitude loading

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