[1]PAN Gongyu,FENG Yaqi,CHEN Lin,et al.Brake Judder Analysis of Disc Brake Considering Thermal Deformation[J].Journal of Zhengzhou University (Engineering Science),2022,43(02):58-64.[doi:10.13705/j.issn.1671-6833.2022.02.006]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
43卷
Number of periods:
2022 02
Page number:
58-64
Column:
Public date:
2022-02-27
- Title:
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Brake Judder Analysis of Disc Brake Considering Thermal Deformation
- Author(s):
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PAN Gongyu1; 2; FENG Yaqi1; CHEN Lin2; XU Yu2; XU Qizhao2
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1.School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013,China;
2.Jiangsu Hengli brake manufacturing Co., Ltd., Taizhou 214500, China
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- Keywords:
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brake judder; thermal-mechanical coupling simulation; thermal deformation; brake pressure variation; brake torque variation
- CLC:
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TH212;TH213.3
- DOI:
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10.13705/j.issn.1671-6833.2022.02.006
- Abstract:
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In order to improve the prediction accuracy of brake judder by brake dynamic model, a brake dynamic model was established, in which the contact form between components and the displacement input of model were more in line with actual situation. Firstly, the finite element model of ventilated disc brake was established by using finite element software, and the disc thickness variation caused by friction heat was calculated by using thermal-structure coupling method. Then, an eight-degree-of-freedom dynamic model of brake system was established in the contact form of face to face between disc and block. At the same time, the initial disc thickness variation of brake disc with judder fault was measured by experiment. The initial thickness variation was superimposed with thickness variation obtained through thermal-structural coupling simulation, and the superimposed displacement was taken as displacement of brake block in dynamic model. The brake pressure variation and brake torque variation was predicted by dynamic simulation. Finally, the reliability of model was verified by experiments. The results showed that the error between simulation result and test result of brake pressure variation is 13.18%, and the error between simulation result and test result of brake torque variation was 11.15%.It was concluded that the superposition input of initial disc thickness variation and thickness variation generated by thermal deformation of disc could make the brake dynamic model have a good accuracy in predicting brake judder, and the brake surface contact model established could effectively predict brake judder.