关键词: 变速箱；等效声辐射功率；形貌优化；噪声控制；模态分析

Abstract: Aiming at the problem of the transmission 3 gear whistling, firstly, the equivalent radiated power of the transmission is analyzed and combined with modal analysis in this paper, and the weak areas of parts that do not meet the design requirements are accurately located. Then the topography is optimized to improve its stiffness, and the optimal structure design is obtained. Finally, through comparative analysis, it is found that the optimized design greatly reduces the noise of equivalent radiation power, thus reduces the noise of transmission. This analysis method can effectively guide the optimization design of transmission housing and reduce transmission noise.

Key words: transmission; equivalent radiated power; topography optimization; noise control; modal analysis