Truck and Construction Seat BSR Identification and Characterization

Paper #:
  • 2017-01-1858

Published:
  • 2017-06-05
Affiliated:
Abstract:
Truck and construction seats offer a number of different challenges over automotive seats in the identification and characterization of Buzz, Squeak, and Rattle (BSR) noises. These seats typically have a separate air or mechanical suspension and usually have a larger number and variety of mechanical adjustments and isolators. Associated vibration excitation tend to have lower frequencies with larger amplitudes. In order to test these seats for both BSR and vibration isolation a low-noise shaker with the ability to test to low frequency, down to 1 Hz was used. Slowly swept sine excitation was particularly helpful in understanding the seat mode shapes and nonlinearities at low frequency which showed large displacements. A typical sample set of seat BSR sounds are described in terms their time and frequency characteristics and widely used sound quality metrics.
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