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

Lee Sang-Min (Mechatronics Center of Samsung Electronics)
Kim Jin-Beom (Department of Mechanical Engineering, KAIST)
Na Suck-Joo (Department of Mechanical Engineering, KAIST)
Publication Information
Journal of Welding and Joining / v.23, no.6, 2005 , pp. 55-60 More about this Journal
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.
Keywords
Sandwich panel; ISB panel; Resistance welding; Ultra-light structure; Contact resistance; FE analysis;
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