基于混合FE-SEA方法的围板类薄壁件中频声传递损失研究

摘要

The hybrid FE-SEA model to predict the transmission loss(TL)of panels in mid-frequency was proposed, and the model turned to be good predictions compared to the results of a simple panel validation experiment. Transmission loss of dash-panel was carried out in the model. The dominant transmission path was diagnosed through the local sub-faces TL analysis, and then two typical sound packages were applied on the dominant sub-face to explore the overall TL variation. And thus the reasonable applied area for sound package can be diagnosed.%构建了一种混合FE-SEA模型对典型围板类薄壁件的中频段的声传递损失进行预测,并将仿真结果与试验结果进行对比,验证了仿真模型的正确性.基于该仿真模型,对某围板类零件在中频段的声传递损失进行了预测,根据对比分析围板上划分的12个子面板的传递损失,得出了对整体传递损失影响最大的区域,并在此区域施加不同的声学包装,以达到优化声学包装施加区域的目的.