Abstract: The tire/road noise is one of the main noise sources of both traffic environment noise and the car’s noise. The vibration and radiation noise characteristics of rolling tires were analyzed by means of the virtual prediction method. The acceleration response spectrum of the rolling tires was acquired through analyzing the dynamic response under the road impact excitations by using the modal superposition approach. The acceleration data of the rolling tire surface was imported into the acoustics analytic software as the input load. Using boundary element method, the radiation noise characteristics of the rolling tire were calculated and analyzed. The distribution and character of the noise of the tire with different tread patterns were discussed. It was found that the tread patterns have a large influence on the radiation noise characteristics of the rolling tires, and reduction of the mass of the tread patterns will enhance the radiation noise.

Key words: acoustics , rolling tire , radiation noise , boundary element method , acoustic simulation

摘要： 轮胎噪声是交通环境噪声的主要来源之一，也是汽车噪声的主要声源。用虚拟模型预测的方法对滚动轮胎的振动辐射噪声进行预测分析。通过对滚动轮胎施加路面简谐激励，获取滚动轮胎表面加速度响应并作为声学分析的边界条件。采用边界元的方法分析不同花纹形式的滚动轮胎在路面激励下振动辐射噪声特性，结果表明花纹形式直接影响着滚动轮胎振动辐射噪声的大小，胎面花纹质量越小，振动辐射噪声越大，研究结果具有工程应用价值。

关键词: 声学, 滚动轮胎, 辐射噪声, 边界元分析, 声学仿真