Study of Vibro-Acoustic Coupling FEM for Predicting the Acoustical Property of Sandwich Composite

Considering the situation of acoustical test,we have established the model of the coupled acoustic FEM and verify of numerical example. The predicting result of numerical model is corresponding to the test result. Meanwhile,The method is efficient and right. the paper has done research on the influence of the four parameters related with the panel and the core material on the acoustic performance of sandwich composite.