아이들 진동 해석을 위한 CAE 모델에 관한 연구

Idle vibration, hot issue of the NVH problem has been studied for a long time. Engine excitation is the source of the idle vibration and Engine mount system, drive line and suspension system are main force transfer paths to the body. To predict the idle vibration performance in the beginning or prototype of a car developing program is very important process and therefore building the CAE model for idle vibration analysis became one of the most important works of car maker. The CAE model must have the force transfer systems that are mentioned before such as engine mounting system, drive line and exhaust system for the real situation. In this paper, CAE model for idle vibration analysis is validated by comparing test results from the bench made for the experiment testing a specific character of transfer systems in particular. Also, this CAE model is very useful in order to improve idle vibration performance in the level of chassis system.