摘要
汽车消声器是减少汽车噪声污染中的最重要部件,它对提升乘坐舒适性、保护环境有着很积极的意义。论文首先分析了空气中声波运动的基本方程,同时采用CATIA软件对消声器进行了三维建模。然后采用virtual.lab软件对消声器内部空腔声场进行有限元求解,获得了消声器内部声场中的声压分布及消声器的声传递损失性能。最后根据仿真结果提出消声器结构改进措施,此外还对消声器进行背压实验测试。研究结果可为消声器结构设计提供理论依据与参考。
Automobile muffler is the most important part in reducing automobile noise pollution.It plays an important role in passenger comfort,environmental protection.This paper first analyzes the basic equations of acoustic wave movement in air,and the muffler is modeled in 3D by CATIA software.Then,virtual.lab software is used to solve the sound field in the muffler cavity by finite element method.And the sound pressure distribution in the sound field inside the muffler and the sound transfer loss performance of the muffler are obtained.Finally,the improvement measures of muffler structure are proposed according to the simulation results,and the back pressure experimental test of the muffler is also carried out.It provides theoretical basis and reference for muffler structure design.
作者
彭长青
毛吉祥
冯军
曾宪任
黎林梅
PENG Changqing;MAO Jixiang;FENG Jun;ZENG Xianren;LI Linmei(Product Development and Technical Center,Jiangling Motors Company Limited,Nanchang 330052,China;School of Mechanical and Intelligent Manufacturing,Jiujiang University,Jiujiang 332005,China;Yangzhou Liankehui Industrial Internet Company Limited,Yangzhou 225127,China;Taizhou Vocational College of Science&Technology,Taizhou 318020,China)
出处
《汽车实用技术》
2023年第2期72-78,共7页
Automobile Applied Technology
关键词
汽车消声器
汽车噪声
背压
仿真分析
结构设计
Automobile muffler
Automobile noise
Back pressure
Simulation analysis
Structure design
作者简介
彭长青(1982-),男,硕士,工程师,研究方向为车身设计,E-mail:cpeng@jmc.com.cn;通讯作者:曾宪任(1982-),男,博士,高级工程师,研究方向为车辆振动与噪声控制,E-mail:waclin@126.com。
