盘式制动器刹车片钢背结构对制动噪声影响研究

发布时间：2018-08-28 13:03

【摘要】：通过改变刹车片钢背形状方法来研究汽车制动噪声,主要分为2阶段:1)通过建立实体和运动学模型进行分析和仿真研究;2)采用声振实验进行验证.在声振实验过程中,采取激光测振仪以及LMS冲击锤2个实验,同仿真分析结果交叉对比以证明仿真分析的准确性;采用3层结构的刹车片,相比传统的2层结构刹车片,该刹车片在不改变制动强度、保证安全系数的基础上具有更好的阻尼特性,有效地抑制噪声的发生.根据制动器噪声台架试验的结果,确定了刹车片固有频率对制动器噪声的贡献,并在此基础上,设计了不同结构形状的钢背刹车片来改变刹车片固有频率,利用ANSYS进行模态分析并制作样品进行噪声实验.仿真和实验结果表明,新设计的钢背刹车片能有效地减小汽车制动噪声的产生.
[Abstract]:The brake noise is studied by changing the shape of steel back of brake plate, which is divided into two stages: 1) the solid and kinematic models are established for analysis and simulation. 2) Acoustic vibration experiments are used to verify the noise. In the process of acoustic vibration experiment, two experiments, laser vibration measuring instrument and LMS impact hammer, are adopted to prove the accuracy of simulation analysis by cross-comparing with the simulation results, and the three-layer brake plate is compared with the traditional two-layer brake plate. The brake pad has better damping characteristics without changing the braking strength and ensuring the safety factor, and effectively inhibits the occurrence of noise. According to the results of brake noise bench test, the contribution of brake natural frequency to brake noise is determined, and on the basis of this, steel back brake with different structure is designed to change the natural frequency of brake plate. Modal analysis was carried out by ANSYS and noise experiment was carried out by making samples. The simulation and experimental results show that the newly designed steel brake pad can effectively reduce the brake noise.
【作者单位】：江苏大学汽车与交通工程学院;埃梯梯精密制造(无锡)有限公司;
【基金】：国家自然基金(51375212) 江苏省道路载运工具应用新技术重点实验室开放基金(201509)资助项目
【分类号】：U463.512

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