Reliability-based design optimization for durability of ground vehicle suspension system components

M. Grujicic, G. Arakere, W. C. Bell, H. Marvi, H. V. Yalavarthy, B. Pandurangan, I. Haque, G. M. Fadel

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


The effect of materials processing- and component manufacturing-induced uncertainties in material properties and component shape and size on the reliability of component performance is investigated. Specifically, reliability of a suspension system component from a high-mobility multipurpose wheeled vehicle which typically can fail under low-cycle strain-based fatigue conditions is analyzed. Toward that end, the most advanced reliability-based design optimization methods available in the literature were combined with the present understanding of low-cycle fatigue durability and applied to the component in question. This entailed intricate integration of several computational tools such as multibody vehicle dynamics, finite-element simulations, and fatigue strain-life assessment/prediction techniques. The results obtained clearly revealed the importance of consideration of material property uncertainties in attaining vehicle performance of critical structural components in complex systems (e.g.a vehicle).

Original languageEnglish (US)
Pages (from-to)301-313
Number of pages13
JournalJournal of Materials Engineering and Performance
Issue number3
StatePublished - Apr 2010
Externally publishedYes


  • Fatigue-controlled durability
  • Material property uncertainties
  • Probabilistic constraints
  • Reliability-based design optimization (RBDO)

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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