This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Modelling the Dissipative Effect of Seal Air Hole Spacing and Size on Door Closing Effort
Annotation ability available
Sector:
Language:
English
Abstract
Door weather strip seals are designed with ventilation holes spaced at regular intervals along the seal system to expedite the flow of air from the seal system during the door closing process. The flow of air through the ventilation holes represents a nonlinear damping mechanism which, depending upon hole size and spacing, can significantly contribute to door closing effort.
In this study we develop one- and two- dimensional versions of a nonlinear damping model for seal compression load deflection (CLD) behavior which incorporate the effects of seal damping response due to air flow through the ventilation holes. The air flow/damping models are developed from first physical principles by application of the mass and momentum balance equations to a control volume of entrapped air between consecutive air ventilation holes in the seal system. Both model formulations indicate that the damping component of seal force per unit length generated during seal compression is directly proportional to 
, where L and D represent, respectively, the spacing distance and diameter of the air ventilation holes. Numerical predictions for the damping force at a section in a production vehicle door seal system during closing are made using the two models and results compared.
, where L and D represent, respectively, the spacing distance and diameter of the air ventilation holes. Numerical predictions for the damping force at a section in a production vehicle door seal system during closing are made using the two models and results compared.Recommended Content
| Technical Paper | Door Overbend - Design Synthesis & Analysis |
| Journal Article | Simulating the Static and Dynamic Response of an Automotive Weatherstrip Component |
Authors
Citation
Gur, Y. and Morman, K., "Modelling the Dissipative Effect of Seal Air Hole Spacing and Size on Door Closing Effort," SAE Technical Paper 971901, 1997, https://doi.org/10.4271/971901.Also In
References
- Morman K. N. Flinn J. Zhao J. Dobieralski G. 1994 “Door Systems Modeller: A Computer-Based Analytical Tool for Predicting Door Closing Effort,” Ford Research Laboratory Technical Report
- Morman K. N. Lin J. Williams M. D'Alesandro F. Squires V. 1992 “A Computer-Aided Engineering Procedure for the Design of Sponge/Dense Rubber Weatherstrip Carriers,” Ford Research Laboratory Report No. SR-92-13
- Gur Y. Morman K. N. Zhao J. 1994 “Analytical Prediction of Noise Transmission Through Door Seal Systems,” Ford Research Laboratory Report No. SR-94-02