The objective of this study is to analysis the failure of leaf spring for the commercial vehicle. A given specification of leaf spring is modeled and analyzed using ANSYS software. The material used is 55Si2Mn90. The failure of leaf spring is performed using static analysis, modal analysis and harmonic response analysis. The effect of different loads on the stress, total deformation and frequency response are investigated. The result showed that the stress, total deformation and frequency response increase when load is increased. The failure occurred near the eye of master leaf of the leaf spring due to high stress generated. At the same, it is also observed that the peak response happened on the first mode of natural frequency.
