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Journal of KWJS 2009;27(3):92-96.
Published online July 6, 2009.
금속 샌드위치 판재 대면적 롤 프로젝션 용접에 관한 연구 : Part 2 - 수치 해석
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A Study on Large Area Roll Projection Welding for Metallic Sandwich Plate : Part 2 - Numerical Analysis
Jong-Hwa Kim, Junsu Ahn, Suck-Joo Na
Abstract
  Metallic sandwich plate has many good properties such as high specific stiffness, high specific strength, good impact absorptivity, effective thermal insulation and soundproofing. In our study, a new bonding method, 3-layer roll projection welding, is introduced to fabricate the metallic sandwich plate. The new method uses a pair of roll electrodes like the seam welding, and projection welding is made at two internal interfaces of the 3-layer weldment consisting of a structured inner sheet and a pair of skin sheets. During the welding process, skin sheet temperature are measured to produce metallic sandwich plate with uniform and good quality. But it is difficult to observe or measure the temperature at the welding points during welding process because the welding points exist at the internal interfaces. Therefore FEM numerical analysis using ABAQUS is conducted to estimate the generated heat at the welding points with different welding conditions.
Key Words: Metallic sandwich plate, Resistance welding, Structured inner sheet, Rolling electrode, Numerical analysis


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