Study on Reducing Wear of Straddle-type Monorail Trains' Running Wheel Tires

doi:10.3901/JME.2018.06.078

Abstract

Abstract: In order to relive the wear phenomenon of straddle-type monorail trains' running wheel tires under curve negotiating, the impact of slip velocity and contact pressure on friction coefficient between tire tread rubber and road is studied through friction tests, and a modified exponential decay friction model is thus put forward and applied in following FE simulations. After that, a 3D finite element model of two 345/85R16 running wheel tires is developed for wear prediction, and the friction work and its skewness are chosen as evaluation indexes of tire wear amount and its distribution. Then, the virtual camber method is put forward to control tires' wear and optimized by the curved running surface method. It shows that with the increase of slip angle, the friction work and its skewness of tires rise up rapidly. Besides, when using the virtual camber method, the total friction work of two tires reduces by 3.4% and the friction work skewness of inside tire falls by 19.5%, but that of outside tire goes up by 25%. Compared with the virtual camber method, the total friction work of optimal curved running surface method decreases by 12.9 J and the friction work skewness of the inside and outside tires drop by 5.54% and 8.87% respectively. Thus, curved running surface method is capable of controlling the wear of running wheel tires effectively.

Key words: finite element method, rubber friction, straddle-type monorail train, tire wear, track surface design, wear control method

CLC Number:

U463

WANG Guolin, ZHENG Zhou, ZHANG Song, LI Kaiqiang, YANG Jian, ZHOU Haichao. Study on Reducing Wear of Straddle-type Monorail Trains' Running Wheel Tires[J]. Journal of Mechanical Engineering, 2018, 54(6): 78-85.

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