A Study on the Influence of the Punch Stroke of Bead on the Draw-bead process by using Static-explicit Finite Element Method |
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정적 외연적 유한요소법을 이용한 비드 펀치 행정거리가 드로우비드 공정에 미치는 영향에 관한 연구 |
정동원 |
제주대학교 기계에너지생산공학부 |
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© 2001 The Korean Society of Ocean Engineers
Open access / Under a Creative Commons License
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Keywords:
Restraining force, Geometrical non-linearity, Elasto-plastic finite element formulation, Static-explicit method, Convergence problem |
핵심용어:
구속력, 기하학적 비선형, 탄소성 유한요소식, 정적 외연적 방법, 수렴성 문제 |
Abstract |
The bead is used to provide properly restraining force in the sheet metal forming process. This bead process includes bending and geometrical non-linearity, and affects the state of binderwrap. Therefore, the analysis of bead process is very important to obtain the desired formability. In this paper, the research about the influence of the punch stroke of bead on the draw-bead process was conducted. Results from the analysis will give useful information to the effective tool design of blank forming process. To analyze the bead process, and elasto-plastic finite element formulation is constructed from the equilibrium equation and the considered boundary conditions involved a proper contact condition. The static-explicit finite element method as a numerical method for the analysis was applied to the analysis program code. It was found that this method could solve too much computation time and convergence problem owing to high non-linearity of bead forming process. |
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