Reliability-Based Design Optimization for Durability of Ground Vehicle Suspension System Components |
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Authors: | M Grujicic G Arakere W C Bell H Marvi H V Yalavarthy B Pandurangan I Haque G M Fadel |
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Affiliation: | (1) International Center for Automotive Research CU-ICAR, Department of Mechanical Engineering, Clemson University, Clemson, SC 29634, USA |
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Abstract: | 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). |
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