Development of Transmitted Energy Path for Interior Noise Reduction on Vehicle

摘要

This paper deals with the methodology of the transmitted vibration energy path through body structure to primary sound contribution panel from the excitation point using CAE. Not achieved vehicle's target, we have to promptly propose an effective countermeasure that is based on the root cause of the NV phenomenon. Although primary panel can be confirmed from panel contribution analysis, it is not possible to find the root cause of this high contribution. Consequently we have developed a new proposed Vibration Intensity that is identifies the transmitted energy path, enabling production of a more efficient vehicle.