重卡驾驶室的声学灵敏度分析

Acoustic Sensitivity Analysis about Truck Cab

车身的声学灵敏度是指施加于车身的单位力在车内产生的声压,是衡量车辆NVH特性的一种很有效的指标。以某重卡驾驶室为研究对象,建立了其声固耦合系统的有限元模型,通过对驾驶室悬置点施加单位激励,绘制了人耳旁的声压响应曲线图,获得一些驾驶室的结构-声学特性。

Acoustic sensitivity of a vehicle body was defined as the interior sound pressure due to a unit force applied to the body, which is a very useful characteristic for evaluating a vehicle NVH per（ormance. Fluid-structure interaction （FSI） model of a cab system was built. The graph of sound pressure response to ears was drawn by putting a unit power on the suspension attachment position. Some structural-acoustic characteristic of the cab was obtained.