Characteristic Analysis of Passenger Car Door Vibration Transfer Function

Abstract

In order to study the vibration transfer characteristics of passenger car door, modal and vibration transfer function of passenger car door are simulated by using HyperMesh and Nastran synthetically. The accuracy of the finite element model is verified through modal analysis. According to the first two modes, the position of transfer function response points is confirmed. The vibration transfer functions are simulated and the accuracy of the simulation is verified by test. The research shows that the natural frequency of a passenger car door is not necessarily a pole of the passenger car door transfer function. On the contrary, a pole of transfer function is bound to be a natural frequency of the passenger car door, which is of directive significance to study the NVH characteristics of the passenger car door structure.