차량 도어 시스템의 FEM-EMA Correlation 연구

The object of this paper is to develop the application method of FEM-EMA correlation and validation techniques to automotive door system for evaluating the vibration effect of door speaker. Recently the door assembly has inner module panel and powerful speaker system to raise their capacity as that result the vibration problem occurred to the door trim. A FE modal analysis and a multi-point experimental modal analysis (EMA) of door assembly are compared with a classical comparing method, MAC (Model Assurance Criteria). In additional in this paper, modeling technique in the mounting area is considered to update dynamic characteristics of the system. Several linkage method and boundary condition are applied to FE model, finally most effective method is suggested for raising the accuracy of FE model and the corrected FE model is set.