1C25 Influence of Initial SRO and DTV on Brake Judder Based on the Disc Brake Model with Multi-points Contact

Q3 Physics and Astronomy
Z. Lijun, Meng Dejian, Yu Zhuoping
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引用次数: 1

Abstract

For a disc brake system,the couples of brake disc and brake pads were supposed to be multi-point contact,and the brake dynamic model with multi-point contact was established considering a semi-empirical theoretical model of a friction coefficient-relative speed curve,which was verified by the rig experiment.Based on the model,assuming that the initial DTV and SRO could be represented mathematically as sinusoidal functions,the influence of the order,the maximum value and the phase of the initial DTV and SRO on brake judder were discussed in detail using the evaluation indicators of the time-frequency characteristics and the root mean square of the BPV and BTV.The results showed that the order of the DTV produces the order for the frequency of the BPV and BTV versus the angular velocity;the BPV has the stronger sensitivity to the SRO and the BTV has the stronger sensitivity to the DTV;the roots mean square of the BPV and BTV have linear incremental relations to the maximum values of the SRO and DTV;the phase of the SRO influences the BPV and BTV by changing the maximum value of the DTV.
基于多点接触盘式制动模型的初始SRO和DTV对制动抖动的影响
针对盘式制动系统,假定制动盘与刹车片的耦合为多点接触,采用摩擦系数相对速度曲线的半经验理论模型,建立了多点接触的制动动力学模型,并通过台架试验进行了验证。在此模型的基础上,假设初始DTV和SRO可以用正弦函数表示,利用BPV和BTV的时频特性评价指标和均方根,详细讨论了初始DTV和SRO的阶数、最大值和相位对制动抖动的影响。结果表明:DTV的阶数决定了BPV和BTV的频率与角速度的顺序;BPV对SRO的敏感性更强,BTV对DTV的敏感性更强;BPV和BTV的均方根与SRO和DTV的最大值呈线性增量关系;SRO的相位通过改变DTV的最大值来影响BPV和BTV。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
振动与冲击
振动与冲击 Physics and Astronomy-Acoustics and Ultrasonics
CiteScore
1.60
自引率
0.00%
发文量
14597
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