Finite element analysis of the design of an elastomeric foam seal for an automotive air filter

Abstract

A polyurethane foam sealing bead used in an automotive air filter is examined in this study. The sealing bead provides a seal between the air filter and the two components of the rigid split air filter housing. Tearing of the seal during service is a common mode of failure. Finite element analysis is used to identify the high strain regions in the seal at full closure of the housing that may result in tearing. Alternate sealing bead designs are developed and modelled in which failure is less likely to occur. Critical seal/housing design issues are identified, such as the maximum strains due to closure of the housing, closure forces and effects and manufacturing tolerances on seal performance. Key trade-offs between these design issues are also identified.

Keywords

sealing bead finite element analysis closure forces manufacturing tolerances

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