The acoustic characteristics of the three schemes of the impedance compound muffler were analyzed by using the acoustic finite element module of software LMS virtual.lab.After comparing the simulation results,Scheme 2 was determined as the final design plan.A muffler transmission loss test bench was built,the transmission loss curve of Scheme 2 was meas-ured by double load method.The results showed that the simulation results basically agreed with the test results in the range of 0 to 1500 Hz,which verified the accuracy and practicability of software LMS virtual.lab in the acoustic characteristics a-nalysis and design guidance of mufflers.
关键词
阻抗复合式消声器/声学有限元/传递损失
Key words
impedance compound muffler/acoustic finite element/transmission loss
维普
万方数据