Assessment of Fatigue Life by FEMFAT on the Weld Configuration of Spot Welding

Abstract:

The stability of plate structure is a very critical problem. The spot welding is practically designed by experiential decisions; so, it is inefficient and risks fatigue fracture. In real structure, multi-spot welded joints are more frequently used than single-spot welded joint. The fatigue behavior of multi-spot welded joints is different from that of single-spot welded joints. The fatigue lives of spot-welding specimen and multi points spot-welding structure are predicted using a FEMFAT 4.4e based on the linear finite element analysis. It is necessary to establish a reasonable and systematic design criterion for the long life design of the spot-welding body structure. In this study, relative location of spot welding was chosen as parameter and the stress distribution around the spot-welding joints’ subjected tensile load was numerically analyzed.

• Periodical: Materials Science Forum (Volumes 580-582)
• Pages: 625-628
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.580-582.625
• Online since: June 2008
• Authors: Bok Kyu Lim, Min Gun Kim, Ku Hyun Chung, Dong Youl Kim, Young Woo Choi
• Keywords: Fatigue Life, Fatigue Limit, Multi-Spot Welded Joint, Relative Location of Spot Welding, Young's Modulus

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