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Self-Pierced Rivet (SPR) Modeling in Aluminum Structure Crash Analysis

[+] Author Affiliations
Dan X. Tang, Bruno Barthelemy

Ford Motor Company, Dearborn, MI

Heng Yuan

Engineering Technology Associates

Paper No. IMECE2002-39078, pp. 207-222; 16 pages
doi:10.1115/IMECE2002-39078
From:
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Transportation: Making Tracks for Tomorrow’s Transportation
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Transportation
  • ISBN: 0-7918-3656-8 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME

abstract

A finite element method has been developed for modeling the characteristics of self-pierced rivets (SPR) in the aluminum parts and structures subjected to impact. It considers SPR elastic, inelastic and separation behaviors and was developed based on the coupon test results in lap shear, coach peel, and tension modes. The method consists of establishing baseline strength characteristics in the six degrees of freedom; and then modifying the baseline properties with coefficient factors (Ki) factors that influence the performance of SPR (thickness, differences in material, temperature, impact velocity, size of connection). The resulting combination is a material damage function that is utilized as the material properties of beam-type spring elements simulating the SPR connection in a FE model. The baseline properties and the equations for coefficient factors (Ki) developed in this study are provided. The material damage functions were developed in the RADIOSS environment, but can be applied to other codes as well. The method was validated at the component level using various configuration of a hat section tube. The CAE prediction using the new method correlates with the test results well in all the cases.

Copyright © 2002 by ASME
Topics: Aluminum , Modeling , Rivets

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