Resonant Sound and Vibration Characteristics of a Truck Tire

Abstract

Bias ply truck tire resonant vibration and sound fields were evaluated in the laboratory by standard vibration and sound measurement procedures. Four resonances were isolated between 90 and 250 Hz. Analysis of the sound and vibration fields showed that each isolated resonant mode radiates acoustic energy like a simple source. The modes investigated were determined to be acoustically slow with the attendant acoustic radiation emanating from a region within ¼ wavelength of the tire footprint.

An evaluation and assessment of existing data and procedures for tire noise measurement

“…These trends were confirmed by Reiter [42] in the previously mentioned study in which he also showed that the resonant frequency increased with tread wear.…”

“…For example, an automobile tire with a circumference of 25 inches (63.5 cm) traveling at 50 mph (80.5 km/hr) corresponds to a frequency of about 11 Hz. Based on the results of several laboratory studies [40,41,42], tire vibrational characteristics and mechanisms of sound generation may be evaluated in three frequency regimeslow frequency, mid frequency and high frequency.…”

“…Reiter [42] found that for a 10.00-22 bias^ply truck tire with a cross-bar tread pattern inflated to 100 psi (6.9 x 10 Pa) there were four distinguishable tire resonances.…”