Analysis and Optimization of Engine Mounting Bracket

The engine mounting plays an important role in reducing the noise, vibrations and harshness for improving vehicle ride comfort. The brackets on the frame that support the engine undergo high static and dynamic stresses as well as huge amount of vibrations. Hence, dissipating the vibrations and keeping the stresses under a pre-determined level of safety should be achieved by careful designing and analysis of the mount brackets. Keeping this in mind in this paper, Static Analysis, model analysis of engine mounting is done as well as harmonic response analysis of bracket as a part of dynamic analysis is performed with the FEA software package ANSYS 15.0.The existing model is optimized and a novel model was proposed to reduce the weight of the rib of the engine mounting bracket as well as the harmonic response in term of acceleration is checked to ensure that the proposed model will not result in to noisy operation. The results of the stresses, deformations and harmonic response for the both models of the engine mounting bracket were compared to each other. With the proposed model of the engine mounting bracket 12.5%weight reduction is achieved maintaining an acceptable level of yield stress and harmonic response.