工况载荷下传递路径分析方法

Transfer Path Analysis under Loading Conditions

阐述传递路径分析(TPA)基本原理,通过对比几种主要载荷识别方法优劣,提出综合利用试验和仿真手段进行载荷识别方法。运用该方法进行车内噪声分析,并通过对比试验结果证明方法可行性。在此基础上进行工况载荷下整车TPA分析,根据分析结果对车辆进行优化,取得显著效果。

The fundamental theory of TPA (Transfer Path Analysis) was introduced. Several main methods of load identification were compared and their advantages and disadvantages were analyzed. And a synthesis method was developed for load identification. Using this method, the vehicle noise was simulated. The result was compared with the testing result and the feasibility of this method was verified. On this basis, The TPA analysis of vehicles under loading conditions was carried out. According to the TPA results, the vehicle was optimized and its NVH was significantly improved.