Patent ID: 7677094

Claim:
A method for testing road load durability of a rear bed of a truck, the method comprising: acquiring road load data indicative of loads imparted on the rear bed while the truck is traveling on a proving road; calculating road pseudo fatigue damage on the rear bed for a plurality of global vibration modes based on the road load data; acquiring bench test load data indicative of loads imparted on the rear bed while a cyclic input corresponding to the global vibration modes is applied to a rear bed assembly mounted on a bench test stand; calculating bench test pseudo fatigue damage on the rear bed for the global vibration modes based on the bench test load data; adjusting the cyclic input to achieve the bench test pseudo fatigue damage substantially equivalent to the road pseudo fatigue damage for the global vibration modes; and performing a durability bench test of the rear bed by applying the cyclic input to the rear bed assembly mounted on the bench test stand.