DOE를 이용한 Acoustic cavity modeling과 NTF 해석 개선

Acoustic cavity model is very important role in noise prediction of vehicle by using CAE. The results of analysis can be very different as a modeling method and properties of acoustic cavity model. However it is difficult to make a precise model due to simplicity of cavity model according to its limited mesh size. In this paper we will find a reasonable values fitting in it through DOE, Kriging method and verify the model by comparison to acoustic cavity modal test results. Also, we will check acoustic cavity model used to predict road noise by means of comparing test and analysis of NTF. This will make it possible to predict reliable noise analysis results.