车身结构刚度对汽车NVH性能的影响研究  

Research on the Influence of Body Structural Stiffness on NVH Performance of Automobiles

作　　者：孔镱森 Kong Yisen

机构地区：[1]新乡市合众鑫辉车业有限公司,河南新乡453000

出　　处：《时代汽车》2024年第19期147-149,共3页Auto Time

摘　　要：车身结构刚度主要指车身的弯曲刚度和扭转刚度。车身结构刚度与汽车NVH性能即噪声,振动和声振粗糙度有直接联系。良好的刚度能防止结构在载荷作用下产生大的变形,从而引起各部件间大的相对位移,或车身结构与车室内空腔发生声固耦合的变化所引发的高噪声。提高车身结构刚度,可以有效地抑制车身振动、减少振动传递、增强乘坐舒适性及操纵稳定性。在研究优化车身结构刚度增强NVH性能时,可以从选择优化车身结构设计,高性能材料,改进制造工艺和选择降噪部件入手。The structural stiffness of the automobile body mainly refers to the bending stiffness and torsional stiffness of the body.There is a direct correlation between the structural stiffness of the body and the NVH performance of the vehicle,i.e.noise,vibration and harshness.Good stiffness can prevent the structure from deforming greatly under load,which will cause large relative displacement between various components,or high noise caused by the change of acoustic-structure interaction between the body structure and the cavity in the cabin.Improving the stiffness of the body structure can effectively suppress the body vibration,reduce the vibration transmission,and enhance the ride comfort and handling stability.When studying the optimization of body structural stiffness to enhance NVH performance,we can start from the selection of optimized body structure design,high-performance materials,improved manufacturing process and noise reduction components.

关 键 词：车身结构 刚度 NVH性能 

分 类 号：U46[机械工程—车辆工程]