As an important part of the vehicle suspension system,the vehicle hem arm mainly supports the body and shock absorber,and buffers the vibration during driving.Taking an automobile McPherson suspension lower arm as an object,First,the finite element model was established using ANSYS to analyze its strength under four extreme conditions of forward braking,extreme turning,forward impact and reverse impact.And then the topology optimization was carried out,the optimization objective function is to minimize the volume of the vehicle hem arm.Finally,the strength of the optimized results is checked.Result shows that the mass of the optimized hem arm is reduced and the strength meets the requirements,which proves the technical effectiveness of this method and provides a reference for the design of bracket parts.
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