Analysis And 0ptimization Of Car Interior Abnormal Noise

This paper introduces the noise transfer function theory overview, After improvement proposed by the suspension of dynamic stiffness to reduce interior noise opinions, In an example of a compact car, We found the front peak problem by Accelerated conditions experimental test , Using the noise transfer function analysis and dynamic stiffness analysis, Combined with partial body modal,Find the cause of the problem in front peak, Proposed to strengthen the sub-frame dynamic stiffness to solve local problems in front peak, And to experimental verification, Indeed the final optimization, Better solve the problem of the front peak.