根据日本车辆噪声控制法规日渐严格的趋势,在车辆研制初始阶段,准确地预测车辆外部噪声级并制订出有效的防范措施,已变得越来越重要了。用本文论述的模拟方法,不仅显著地改进了加速行驶噪声级的峰值的预测精度,而且瞬态变化的预测精度也有重大改进,今后还需要用本文的实验数据对车身的声辐射特性作进一步的理论分析研究。 According to the increasingly stringent trend of Japan’s vehicle noise control laws and regulations, it is increasingly important to accurately predict the external noise level and formulate effective preventive measures during the initial stage of vehicle development. The simulation method discussed in this paper not only significantly improves the prediction accuracy of the peak of accelerating driving noise level, but also greatly improves the prediction accuracy of transient changes. In the future, the acoustic radiation characteristics of the vehicle body need to be further studied with the experimental data in this paper Theoretical analysis and research.