EFFECTS OF FORMING PROCESS ON SEALING PERFORMANCE OF FULL-BEAD OF MLS GASKET: FINITE ELEMENT ANALYSIS APPROACH

  • CHO S.-S. (Department of Mechanical & System Design Engineering, Hongik University) ;
  • HAN B. K. (Department of Mechanical & System Design Engineering, Hongik University) ;
  • CHANG H. (Hyundai Motor Company) ;
  • KIM B. K. (Department of Mechanical & Automotive Engineering, Inje University)
  • 발행 : 2005.04.01

초록

A full-bead of multi-layer-steel (MLS) engine head gasket is used to seal the combustion gas. Finite element analyses were conducted to assess the dependence of the sealing performance of full-bead on the forming process consisting of embossing and flatting operations. It is demonstrated that the sealing performance is enhanced with more severe deformation of the bead plate during the embossing, i.e., with the increase in the punching depth, the punch height, the punch width and the friction coefficient of the bead plate against the punch and die, and with the decrease in the width of die cavity. Meanwhile, the flatting process that is employed to adjust the height of the embossed full-bead has no influence on the sealing performance.

키워드

참고문헌

  1. Harland, C. Novaria, P. and Robinson, M. (1993). Process and performance of modeling of gasket components. SAE Paper No. 930118
  2. Herbert, C. and Webster, W. (1998). Cylinder head gasket simulation in finite element analysis. SAE Paper No. 980843
  3. Ishigaki, T., Kitagawa, J. and Tanaka, A. (1993). New evaluation method of metal head gasket. SAE Paper No. 930122
  4. Novak, G, Sadowski, M., Widder, E. and Capretta, R. (1998). The role of the stopper in the mechanics of combustion seal. SAE Paper No. 980575
  5. Popielas, F., Chen, C. and Obermaier, S. (2000). CAE approach for multi-layer steel cylinder head gaskets. SAE Paper No. 2000-01-1348
  6. Yamaguchi, K., Sata, A., Goto, E., Fujiki, R., Kawai, Y. and Nakata, N. (1998). Development of a new metal cylinder head gasket. SAE Paper No. 980844