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980MPa급 초고장력 강판의 자동차 프런트 사이드 멤버 부품 성형에 관한 연구
차승훈(C. H. Cha),이상곤(S. K. Lee),고대철(D. C. Ko),김병민(B. M. Kim) 한국소성·가공학회 2009 소성가공 : 한국소성가공학회지 Vol.18 No.1
This paper is concerned with forming technology of an automotive front side member part with ultra high strength steel sheet of DP980. The forming technology considered in this paper is the draw & form type, which installs the upper pad and lower pad to produce the complicated shape of ultra high strength steel sheet. In order to produce sound product, comparison between form type and draw & form type and between draw type and draw & form type are investigated by FE-analysis. FE-analysis is carried out with commercial sheet metal forming analysis S/W, DYNAFORM. It was shown from FE-analysis that the draw & form type satisfied the required specifications such as the dimensional accuracy and soundness of automotive front side member part. The effectiveness of the analytical result was verified by the experiment. From this investigation, the draw & form type is proved to be able to supply useful forming technology in forming ultra high strength steel.