机械

运用声学有限元软件LMS Virtual.Lab中的Acoustics模块对具有内插管的抗性消声器内部声场进行有限元分析。通过划分消声器有限元网格、定义声学网格、前处理等一系列步骤对消声器的传递损失进行了理论计算,并且对比相关的有限元分析软件及实验结果,验证了声学有限元软件计算结果的准确性。为消音器的设计优化提供了理论基础。

The Reactive Muffler with intubations is analised in the way of FEM in Acoustics module of LMS Virtual.Lab. The transmission loss of the silencer is calculated through dividing the finite element mesh, defining acoustics gridding, preprocessing and other steps in this thesis. And contrasting relevant finite element analysis software and the experimental results, it verifies the acoustic finite element software on the accuracy of the calculation results. It can provide a theoretical basis for the design of the silencer optimization.