载重汽车驾驶室声场中有限元技术的应用  

Application of Finite Element Technology in the Sound Field of Truck Cab

作　　者：崔怀峰[1] CUI Huai-feng(School of Mechanical Engineering, Ningbo U）liversity of Technology, Ningbo Zhejiang 315211, China)

机构地区：[1]宁波工程学院机械工程学院,浙江宁波315211

出　　处：《机械研究与应用》2018年第2期61-63,68,共4页Mechanical Research & Application

基　　金：浙江省基础公益研究计划项目:多智能体架构下的轿车车内噪声有源声智能控制技术(编号:LGG18E050019);浙江省教育厅科研项目:多智能体架构下的轿车舱内噪声有源声组合智能控制研究(编号:Y201737638);宁波市自然科学基金资助项目:基于多主体系统的封闭空间有源噪声智能结构控制研究(编号:2016A610107)

摘　　要：采用有限元方法对复杂封闭空腔-载重汽车的驾驶室内的耦合声场特性进行研究。利用Hypermesh对模型进行网格划分,通过Abaqus和LMS virtual lab分别计算结构模态和声模态,建立声固耦合模型并对所设计的驾驶室内的声场特性进行分析。研究结果表明,驾驶室内声场主要受结构模态和声模态所影响,结构-声耦合效应并不明显。因此利用有限元技术能够为驾驶室等复杂封闭空腔的结构和声学设计提供理论依据。The finite element method is used to study the characteristics of the coupling sound field in a complex enclosure,that is,the cab of a heavy truck. The model is meshed by using the Hypermesh software,and the structural modes and acoustic modes are calculated by the Abaqus and LMS virtual lab software respectively. The acoustic-solid coupling model is established and the acoustic field characteristics of the designed cab are analyzed. The results show that the sound field in cab is mainly affected by the structural modes and acoustic modes,and the structure-acoustic coupling effect is not obvious. Therefore,the finite element method can be used to provide the theoretical basis for the structure and acoustic design of complex closed cavities,such as the cab.

关 键 词：封闭空腔 声固耦合 有限元 结构模态 声模态 

分 类 号：TB535[理学—物理]