计算机辅助消声器开发系统研究

Study of System of Muffler's Design Aided by Computer

介绍了一种计算机辅助消声器开发系统.它通过所建立的消声器三维模型对排气消声器的插入损失进行计算,考虑到消声器的各个主要结构参数对消声性能的影响,采用正交设计方法,根据消声量的要求对消声器结构参数进行优化.利用VBA对AutoCAD进行二次开发,完成了性能计算程序与结构绘图程序间的数据共享,实现了消声器结构图的自动绘制及编辑.试验结果表明:该开发系统是有效的.

Authors introduces a developing system of muffler＇ s design aided by computer. The exhaust silencer＇s insertion loss has been calculated through the three-dimensional model of automobile mufflers built by BEM. Considering the effect of each main structure parameters of silencer on eliminating noise, the parameters of the muffler structure could be optimized by orthogonal planning method according to the demands of noise＇s elimination; meanwhile, the Visual Basic for Application has been used to perform the further developing of AutoCAD in order to fulfill the data sharing between the performance calculating program and the structure drawing one in AutoCAD, so that the auto-drawing and modification of the muffler figure could berealized.