A Study on the Resistance Welding of Metallic Sandwich Panel : Part 2 - Process Analysis

Lee, Sang-Min; Kim, Jin-Beom; Na, Suck-Joo

Journal of KWJS 2005;23(6):55-60.
Published online January 26, 2006.

[연구논문]저항 용접을 이용한 금속 샌드위치 판재 접합에 관한 연구 : Part 2 - 공정해석

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A Study on the Resistance Welding of Metallic Sandwich Panel : Part 2 - Process Analysis

Sang-Min Lee, Jin-Beom Kim, Suck-Joo Na

Abstract

In part 1. optimal process parameters such as thickness of stopper and welding time are achieved to produce high strength ISB(Inner Structured and Bonded) panels. Developed process is different from the usual resistance welding process in the number of points welded at a time. In part 2, Numerical modeling for this new process is proposed and the variation of contact area with respect to the gap of electrodes is studied through FE analyses. Besides, it is tried to figure out the welding nugget formation and proper distance between welding points. FE analytic results show that inner structures are melted more than skin plate, and current distribution between points to be welded can be controlled by distance welding points. Comparison of some FE analytic results with corresponding experimental results could confirm the validity of the proposed numerical modeling.