DOI QR코드

DOI QR Code

Development of Computational Model for Spot Welding and Effect Analysis on Welding Conditions

점용접의 해석 모델 개발 및 용접조건에 대한 영향도 분석

Bang, Hyejin;Ju, Yonghyun;Choi, Junghoon;Shin, Hyunshik;Jung, Byungsung;Park, Kyujong;Lee, Sang-kyo;Cho, Chongdu
방혜진;주용현;최정훈;신현식;정병성;박규종;이상교;조종두

  • Received : 2015.06.08
  • Accepted : 2015.07.19
  • Published : 2015.11.01

Abstract

Resistance Spot Welding (RSW) is the method for joining two overlapped base materials when high pressure and current is applied from electrodes. Due to the safety problem such high pressure and voltage, automation should be early adopted. In this paper, the spot welding is developed as a computational model of wheel house from GM Korea and the welding condition such as weld sequence is considered. The computational analysis is preceded as a static and elasto-plastic procedure and used thermal expansion coefficient represents a dependency of spot volume between two panels. In case of welding sequence, the efficiency which depends on the distance between current spot point and the other is calculated in several cases.

Keywords

Spot welding;Automotive body panel;Welding sequence;Scanning model;Spring back

References

  1. P. S. Wei and T. H. Wu, "Electrode Geometry Effects on Microstructure Determined by Heat Transfer and Solidification Rate during Resistance Spot Welding," International Journal of Heat and Mass Transfer, Vol.79, pp.408-416, 2014. https://doi.org/10.1016/j.ijheatmasstransfer.2014.08.007
  2. J. Kim, A Study on Spatter Reduction and Nugget Formation Mechanism by Using Hemispherically Concaved Electrode in Resistance Spot Welding, Ph. D. Dissertation, Hanyang University, Seoul, Korea, 2013.
  3. J. Song, H. Huh, H. Kim and S. Kim, "Evaluation of the Finite Element Modeling of Spot-welded Region for Crash Analysis," Transactions of KSAE, Vol.14, No.2, pp.174-183, 2006.

Acknowledgement

Grant : 지속가능형 기계시스템 인재양성 사업단