Vibration Testing of Off-Road Vehicle Seats

摘要

Vibration tests of four off-road vehicle seats were performed. The purpose of thetests was to determine which seat provided the best vibration attenuation under laboratory conditions. Laboratory tests were constructed to simulate the mining vibration environment within the limitations of the test equipment. The acceleration test levels and corresponding response of the seats were low compared to ISO 2631's fatigue-decreased-proficiency time limits. Two of the seats employed mechanical suspensions and two seats employed air suspensions. Air suspension seats provided good vibration attenuation if pressurized greater than 552 kPa. Mechanical suspension seats' attenuation performance decreased if the preload to mass ratio exceeded 9.8. Seat cushions of lower density provided less vibration damping.