Method and system for designing vehicle door seals based on pred

Details Method and system for designing vehicle door seals based on pred Method and system for designing vehicle door seals based on pred

1997-05-02

1999-08-17

Assouad, Patrick

Data processing: measuring, calibrating, or testing

Measurement system

Pressure

702 39, 181210, H04R 2900, G06T 1700

Patent

active

059407883

ABSTRACT:
A method and system for designing a door seal system is based upon a predicted contribution of the door seal system to sound pressure levels (SPLs) within a vehicle due to wind noise. A door seal system design is selected and a door seal system deformed geometry is determined. The deformed door seal system and acoustic media are combined to produce a fully coupled acoustic/structure model of the door seal system. A sound transmission loss is predicted for the door seal system design under predetermined conditions using acoustics, finite deformation rubber elasticity, and steady state harmonic viscoelasticity. The sound transmission loss and interior SPLs are then displayed, and the door seal design changed according to predefined rules to produce a seal design which provides a desired SPL in the vehicle.

REFERENCES:
patent: 5568404 (1996-10-01), Strumolo
Kempfer, "A Sealing for Prototypes", Computer-Aided Engineering, pp. 10-11, Jan. 1996.
author unknown, "Taking the Stress Out of Seal Design: Computers Simplify Selection Process", Design Engineering, pp. 10-13, Sep. 1994.
Fireman, "Using PC-Based Seal Analysis Reduces Prototypes", Rubber World, p. 18, Mar. 1996.
Internet Web Page of EASi Software Products--Vista Architecture, pp. 1-3, Feb. 13, 1998.
author unknown, "Software Supplies Solutions in Seal Design", Design Engineering, p. 12, May 1993.
George, A.R. (1990) "Automobile Aerodynamic Noise", SAE International Congress and Exposition, Michigan, SAE Paper No. 900315.
George, A.R. and J. R. Callister(1991) "Aerodynamic Noise of Ground Vehicles", SAE Paper No. 911027.
Van den Brulle, P.J. and A. Ulrich (1981) "Determination of the Sound Pressure Distribution Along the Door Slits of a Passenger Car", Proceedings of 1981 Inter-Noise Conference.
Abaqus Theory Manual, Version 5.5, "Frequency Domain Viscoelastiity", pp. 4.7.3-1, 7.I.1-5.
Morman, Jr., K.N. and J. C. Nagtegaal (1983) "Finite Element Analysis of Sinusoidal Small-Amplitude Vibrations in Deformed Viscoelastic Solids, Part 1: Theoretical Development", International Journal for Numerical Methods in Engineering, 19, pp. 1079-1103.

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