Special Vehicle Cab Interior Noise Analysis

Based on the ANSYS software platforms, the structural vibration and noise of the special vehicle cab structures have been systematically simulated and studied with test modal technology, the finite element and the boundary element methods in this paper.First, modal analysis is made to obtain the structural modal parameters. Then, the finite element modal is checked and verified by the test results. The dynamic response is calculated based on the reliable finite element modal. Combine with the boundary method and regard vibration pace of the panel as boundary condition; based on the SYSNOISE software the structure acoustic couple cab modal is set. The acoustics characteristic of the inner acoustic field is carried on analysis and research. The noise obtained within the driver's cabin is distributed, some conclusions were drawn which were useful for the vehicle reducing noise in low frequency.The research has offered more important reference data for the fact that a special vehicle of driver's cabin structural acoustics is designed. Such a research is valuable both in academic research and in practical technology.