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Simulation and Correlation of Durability Test on an Automotive Rear Suspension

[+] Author Affiliations
Gene Y. Liao

Wayne State University

Paper No. IMECE2005-79057, pp. 413-419; 7 pages
doi:10.1115/IMECE2005-79057
From:
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Innovations in Engineering Education: Mechanical Engineering Education, Mechanical Engineering/Mechanical Engineering Technology Department Heads
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Mechanical Engineering Education
  • ISBN: 0-7918-4232-0 | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME

abstract

This paper documents the Finite Element (FE)–based durability simulations and correlation with rig test for an automotive rear suspension. The rig test is developed and conducted on the rear suspension subject to road load per durability schedule. Analytical simulations indicate that the upper weld beads of both left and right sleeves to T–beams are potential failure locations. The correlation shows that the predicted fatigue life is one order lesser than the tested fatigue life. However, the experiment shows that a crack appears at the upper weld bead on the right sleeve connected to the T-beam where is exactly as simulation predicted. It is observed that the rigid modeling of welds is feasible in the simulation. The validated rig fatigue life simulation reduces the development time and cost on the common rear suspensions.

Copyright © 2005 by ASME

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