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‘Tuning’ the Variable Stiffness Head Gasket an Interactive Computational Approach
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English
Abstract
Problems of bore distortion, combustion blowby and gasket fatigue in lightweight engine blocks are ultimately related to the gasket sealing pressure distribution. For both conventional embossed steel gaskets and composite ones this distribution can be modified by suitable local changes in gasket stiffness. Current methods of gasket optimization concentrate on large scale iterative finite element analysis of the head/gasket/block system, with major computational costs. We present a more economical alternative in which condensed compliance matrices are obtained either from elementary NASTRAN runs or by experimental means. The algorithm enables the gasket engineer to ‘tune’ the gasket to the desired sealing pressure profile with acceptable stiffness variations.
Authors
Citation
Glander, D. and Punch, E., "‘Tuning’ the Variable Stiffness Head Gasket an Interactive Computational Approach," SAE Technical Paper 871998, 1987, https://doi.org/10.4271/871998.Also In
SAE 1987 Transactions: Reciprocating Engines--Spark Ignition and Diesel
Number: V96-4; Published: 1988-09-01
Number: V96-4; Published: 1988-09-01
References
- Czernik D. E. “Gasketing the Internal Combustion Engine,” SAE Paper No. 800073 SAE International Congress and Exposition Detroit, Michigan February, 1980
- Czernik D. E. “Designing and Testing Cylinder Head Gaskets for High Performance Sealing,” SAE Paper No. 840188 SAE International Congress and Exposition Detroit, Michigan February, 1984
- Lee Y-K General Motors Research Laboratories 1984
- User's Manual, M.S.C./NASTRAN Version 63 The MacNeal-Schwendler Corporation Los Angeles, California