A Review of Modeling Modification Methods for Mixed FE-SEA

Since the traditional deterministic method and classical statistical energy have little room for improvement, more researches gradually turn to combination of two methods solve low medium frequency "acoustic vibration" problem. However, in application mixed FE-SEA model, researchers found that when coupling interface between FEA substructure SEA is form continuous interface, a very large finite element grid needs be established at boundary which leads huge time-consuming problem calculation model. To this problem, hybrid model improved modified. In paper, some common correction methods, including subsystem edge gradient correction, are reviewed provide theoretical support comprehensive study correction.