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Finite Element Modeling Strategy for Spot Welds in Thin-Walled Sections and Its Validation

[+] Author Affiliations
N. P. Sawai, R. B. Ingle

Pune Institute of Engineering and Technology

S. K. Patidar, R. S. Mahajan, S. Raju

The Automotive Research Association of India

Paper No. IMECE2005-80816, pp. 151-159; 9 pages
doi:10.1115/IMECE2005-80816
From:
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Design Engineering, Parts A and B
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Design Engineering Division
  • ISBN: 0-7918-4215-0 | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME

abstract

The effects of spot weld model on the numerical simulation of spot welded closed top-hat section sheet metal beams subjected to quassistatic and impact loading conditions were investigated using coupled experimental-numerical approach. Strength tests were performed to find the stiffness curves of spot weld in lap-shear, cross-tension (opening load), in-plane rotation (torsion) and peel specimens. The specimens were made from plain carbon steel and high strength low alloy steel sheets of three representative thicknesses. The local weld properties obtained from these tests were used to model a spot weld using different element types available in LSDYNA. These models were used in the numerical simulation of the beams subjected to static and dynamic axial crushing and static bending. The results obtained from the numerical analyses were validated by experiments on spot welded top-hat section sheet metal beams.

Copyright © 2005 by ASME

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