摘要
某SUV在数字样车阶段的CAE仿真分析结果显示,路面实际激励噪声超过目标值且高于同平台现有标杆车,存在较大路噪风险。通过传递路径分析、声学灵敏度分析、声腔模态分析和节点贡献量分析确定了路噪问题产生的主要原因。采取对后地板进行加强的措施优化了噪声传递函数,有效规避了潜在的路噪风险。后续阶段中该SUV工装样车经实际测试,路面噪声表现良好,体现了仿真分析对风险预测的重要性和对设计开发的指导意义。
The CAE simulation results of a SUV in the digital prototype stage show that the actual excitation noise on the road exceeds the target value and is higher than the existing benchmark vehicle of the same platform, which has a greater road noise risk. The main causes of road noise are determined by transfer path analysis, acoustic sensitivity analysis, cavity modal analysis and grid participation analysis. The measures of strengthening the rear floor are taken to optimize the noise transfer function and the potential road noise risk is effectively avoided. In the subsequent stage, the SUV tooling prototype has been tested in practice, and the road noise performance is good, which reflects the importance of simulation analysis to risk prediction and the guiding significance to design and development.
作者
邵立军
李京福
鄂世国
乔鑫
SHAO Lijun;LI Jingfu;E Shiguo;QIAO Xin
出处
《汽车工程师》
2019年第12期38-40,共3页
Automotive Engineer
