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열간 프레스 성형공정 적용을 위한 극저탄소강 내 930℃ 탄소확산의 유한요소해석
강수영 ( Soo Young Kang ),고병식 ( Byeong Sik Ko ) 대한금속재료학회(구 대한금속학회) 2013 대한금속·재료학회지 Vol.51 No.9
Abstract: Carbon diffusion of ultra-low carbon steel treated at 930℃ for 10, 30, 60 and 120 minutes is investigated by using optical microscopy, EPMA and Micro Vickers. Results of experiment and finite element analysis are compared. The carbon diffusion seen in the optical microscopy, EPMA and Micro Vickers test increased as the time treated at 930 ℃ increased. Such phenomena is explained by finite element analysis.
송명준(Myung-Jun Song),이재준(Jae-Joon Lee),고병식(Byeong-Sik Ko),신문균(Moon-Kyun Shin) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The study of optimization is one of the most important element to develop and research the new cars. A seat of those provide comfort to passengers. At the current Engineers' concerns is to reduce the cost and weight of new car. In the paper, we have done optimization analysis of the car seat on the base of SEAT BELT ANCHOR and RR SLED considering the safety of passengers. The procedure of optimization is built in base of those. It is to build the efficiency of optimization. the following software is utilized, LS-Dyna, GENESIS, Optistruct of Altair, Visual DOC and Hypermesh. Design of experiment is utilized to obtain optimization design for driver seat. here. The reason of using DOE is that the analysis of the previous is nonlinear. Topology support the liner only for FEA. In the paper we call the initial finite element model to baseline model. And the orthogonal array of DOE is used.