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Welding in the World

, Volume 56, Issue 3–4, pp 115–125 | Cite as

Influence of Production-Related Gaps on Strength Properties and Deformation Behaviour of Spot Welded Trip Steel HCT690T

  • Stephan Brauser
  • Lutz-Alexander Pepke
  • Gert Weber
  • Michael Rethmeier
Peer-Reviewed Section

Abstract

In this study, the influence of production-related gaps on the shear tension strength and fatigue performance was investigated for resistance spot welded TRIP steel HCT690, Furthermore, the local strain distribution in shear tension test was calculated by the digital image correlation technique (DIG), The static shear tension strength was found to be almost independent of gaps up to 3 mm, The maximum local strain in the spot weld region however decreases depending on which sample side (deformed or undeformed) is considered, In addition, it has been ascertained that gaps of 3 mm lead to a significant drop in fatigue life compared to gap-free shear tension samples, This fact could be attributed to decreased stiffness, higher transverse vibration and higher rotation (0) between the sheets as well as increased local stress calculated by 2-dimensional FE simulation.

IIW-Thesaurus keywords

Deformation Fatigue life Finite element analysis Gap Resistance spot welding Shear strength 

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Copyright information

© International Institute of Welding 2012

Authors and Affiliations

  • Stephan Brauser
    • 1
  • Lutz-Alexander Pepke
    • 2
  • Gert Weber
    • 2
  • Michael Rethmeier
    • 1
  1. 1.BAM Federal Institute for Materials Research and Testing and Fraunhofer IPKBerlinGermany
  2. 2.BAM Federal Institute for Materials Research and TestingBerlinGermany

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