Computer Aided Design of an Engine Bracket

A new diesel engine mounting bracket, that was used as a part of a repowering package for one ton trucks, was analyzed under maximum static loading using a finite element model. Upon finding stresses above the yield strength of the material, alterations in the design were made to stiffen the bracket in the areas of high stresses, the maximum of which was at the dampener mounting hole. This new design added several dimples and bends to increase the stiffness of the entire bracket, especially in the dampener mounting area. The results of these design changes indicated a successful reduction of the stress in that critical area. The fatigue life was evaluated for the chassis mount, and was found to be acceptable for this retrofit condition.