METHOD FOR ESTIMATING FATIGUE LIFE OF LEAF SPRING OF VEHICLE

摘要

PURPOSE: A method for estimating a fatigue life of a leaf spring of a vehicle is provided to improve the complicated preparation of a sample to test and reduce time and cost required for the test of durability. CONSTITUTION: A method for estimating a fatigue life of a leaf spring of a vehicle includes the steps of manufacturing a leaf spring to test with a finite element model(30), computing a dynamic load with relation to the manufactured leaf spring(40), analyzing the finite element model with relation to the manufactured leaf spring and computing a stress of a unit loading table(50), computing a dynamic stress of the leaf spring with relation to the computed dynamic load and the unit displacement(60), and estimating a fatigue life of the damage due to the computed dynamic stress by a miner's rule(70).