Performance of Polyurethane Foam Vibrational Characteristics and S.E.A.T. Full Foam Seat Systems

Paper #:
  • 2004-01-1715

Published:
  • 2004-03-08
DOI:
  • 10.4271/2004-01-1715
Citation:
McEvoy, J., White, P., Kolich, M., and Szott, M., "Performance of Polyurethane Foam Vibrational Characteristics and S.E.A.T. Full Foam Seat Systems," SAE Technical Paper 2004-01-1715, 2004, doi:10.4271/2004-01-1715.
Abstract:

This paper will explore the performance of two polyurethane foam formulations, one that is designed to be high resilient and one that is designed to be low resilient. The two formulations are placed into a full foam seat suspension. Data is generated with each formulation by a forced vibration test with a tekken mass, both at one point in time and over several hours to simulate in vehicle performance. The Seat Effectiveness Amplitude Transmissibility (SEAT) is read over a one-hour course that includes paved and rough roads, which is repeated three times for a total of three hours of data. This data is then compared to the foam data. The data shows that the low resilient foam will have some improvement in the paved roads but will have a vast improvement in the area of the rough roads. Data will be done by road to show the fatigue level occupant, road type, hour of the ride and drive and the foam type.

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