The Effect of Bionic Brake Drum Striped Unit Body on Friction and Wear of Brake Pad

^{1, 3} Jilin Business and Technology College, Department of Engineering, Changchun, China
^{2, 4} Jilin University, College of Automotive Engineering, Changchun, China
⁵ Jilin University, College of Mechanical Science and Aerospace Engineering, Changchun, China

^a email: huhaiyan@jlbtc.edu.cn
^b* Corresponding author’s e-mail: hyyang14@mails.jlu.edu.cn
^c email: yangjiandong56@126.com
^d email: wqn@jlu.edu.cn
^e email: 150658602@qq.com

Abstract

In this paper, the contact mechanics is applied to analyse the interaction between the striped unit body on the bionic brake drum and the brake pad. The contact stress distribution law of two objects interaction is obtained. According to the stress distribution law the change of the friction and wear of the striped unit body on the brake pad is derived. Considering the change of the surface feature regardless of other factors, the friction wear of the striped unit body on the brake pad has increased by more than 27%. It is found that small convex striped unit bodies are added on the surface of the bionic brake drum, which makes the contact surface between the brake drum and the brake pad no longer the original plane contact. Therefore, the pressure and direction between the contact surfaces are various. Besides, even if the external pressure does not change, the contact normal pressure between the contact surfaces will be increased which increases the friction wear on the brake pad accordingly.