Brake noise, a principal component of vehicle noise, is among the most critical measures of vehicle quality. The perceived quality of cars can be improved by reducing brake noise; therefore, vehicle manufacturers are extensively investigating the influencing factors, generating mechanism, and solutions of brake noise. Compressive strain is one of the most influential performance parameters of a brake pad and can be adjusted by regulating the material elastic modulus and by modifying the shape of the brake lining. In this study, the compressive strain of a brake pad was adjusted through four methods, and the noise characteristics of brake pads with different elastic modulus, section outlines, lining widths, and chamfers were studied through finite element analysis and the complex-eigenvalue method. The effects of compressive strain of a brake pad on brake noise were examined, and an optimized brake-pad scheme was developed. A dynamometer test conducted to validate the effectiveness of the optimized scheme confirmed a clear alleviation in brake noise.

中文翻译：

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刹车片压缩应变对刹车噪声的影响

刹车噪音是车辆噪音的主要组成部分，是衡量车辆质量的最关键指标。通过降低制动噪音可以提高汽车的感知质量。因此，车辆制造商正在广泛研究影响因素，产生机理和制动噪声的解决方案。压缩应变是刹车片最有影响力的性能参数之一，可以通过调节材料的弹性模量和修改制动衬片的形状来调节。在这项研究中，通过四种方法调整了制动衬块的压缩应变，并通过有限元分析和复特征值方法研究了具有不同弹性模量，截面轮廓，衬里宽度和倒角的制动衬块的噪声特性。研究了制动衬块的压缩应变对制动噪声的影响，并开发了一种优化的制动衬块方案。为验证优化方案的有效性而进行的测功机测试证实了制动噪声的明显减轻。