摘要
提出了一个计算轮胎泵浦噪声的方法.该方法首先利用ABAQUS有限元软件模拟轮胎在路面上的滚动过程,得到在轮胎滚动过程中单个花纹节上各花纹沟的体积变化情况.在此基础上,利用单极子点声源模型以及声源叠加公式获得了整个轮胎产生的泵浦噪声.基于上述方法,考察了不同花纹形式和花纹沟尺寸对泵浦噪声的影响.结果表明,花纹沟周向尺寸和花纹沟深度的增加都会使轮胎泵浦噪声增大,且花纹沟深度对泵浦噪声的影响更为显著;横向花纹轮胎与斜向花纹轮胎在花纹沟体积相同时产生的泵浦噪声基本相同.此外还考察了行驶速度对泵浦噪声的影响.结果表明,轮胎泵浦噪声基本与车速的对数成正比.
A method for computing tire pumping noise was presented, in which, the volume change of grooves from a pattern was obtained through simulating the rolling of tire on the road using the finite element software ABAQUS. On this basis, the pumping noise generated by the entire tire is obtained using the model of acoustic monopole and acoustic source superposition formula. Based on the method mentioned above, the effect of groove type and dimension on pumping noise was analyzed. The results show that pumping noise increases with the growth of groove depth or circumferential dimension where the depth is more significant, and that the pumping noise generated from lateral grooves is basically equal to that form oblique groove when their volume is the same. In addition, the effect of speed on pumping noise is considered. The results show that pumping noise of the tire is substantially proportional to the logarithm of vehicle speed.
关键词
轮胎
泵浦噪声
有限元分析
tire
pumping noise
finite element
analysis
