Modeling of resistance spot welds-process and performance

Z. Feng, S. S. Babu, B. W. Riemer, M. L. Santella, J. E. Gould, M. Kimchi

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

This paper summarizes an on-going comprehensive effort to develop an integrated interdisciplinary modeling approach to simulate the performance properties of resistance spot welded joints. The integrated modeling approach incorporates a number of fundamental physical phenomena that occur during welding and under the subsequent service loading conditions. The approach consists of (1) process model that performs coupled electrical-thermal- mechanical computations to determine the temperature history and weld nugget growth based upon prescribed welding conditions; (2) microstructure model that determines the microstructure and property gradients in resistance spot welds based on steel's composition and temperature history of the welding process; and (3) structural model that incorporate the effects of the microstructure and propriety gradients to evaluate the load-carrying capacity of spot weld joints. This study was made using 0.81-mm-thick uncoated DQSK plain carbon steel.

Original languageEnglish
Pages (from-to)18-24
Number of pages7
JournalWelding in the World
Volume45
Issue number11-12
StatePublished - 2001
Externally publishedYes

Keywords

  • Austenite
  • Bainite
  • Carbon steels
  • Computation
  • Contact resistance
  • Cooling rate
  • Diagrams
  • Electrical resistance
  • Hardness
  • Influencing factors
  • Interfaces
  • Mechanical tests
  • Microstructure
  • Pearlite
  • Phase diagrams
  • Practical investigations
  • Pressure
  • Reference lists
  • Resistance welding
  • Resistance welding electrodes
  • Simulating
  • Spot welding
  • Strength
  • Temperature
  • Temperature distribution
  • Ttt diagrams
  • Welded joints

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