A COMPARATIVE STUDY ON THE FATIGUE LIFE OF THE VEHICLE BODY SPOT WELDS USING DIFFERENT NUMERICAL TECHNIQUES: INERTIA RELIEF AND MODAL DYNAMIC ANALYSES ArticleAhmadi A., Farrahi G.H., Kashyzadeh K.R., Azadi S., Jahani K.Frattura ed Integrita Strutturale. Том 14. 2020. С. 67-81