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조성산(Sung-San Cho),한병기(Byungkee Han),장훈(Hoon Chang),김범근(Beomkeun Kim),구교남(Kyonam Ku) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
A full-bead of multi-layer-steel (MLS) engine head gasket is used to seal the combustion gas. A finite element model has been developed to assess the relation between the forming process and sealability of rubber-precoated full-bead. It is demonstrated that better sealing performance is achieved when excessive deformation of bead plate is avoided during the forming, i.e., with the decrease in punching depth, punch height, punch width and frictional resistance of bead plate against punch and die, and with the increase in width of die cavity.