Analysis of Force Transmission Characteristics of Modular Deformable Tire
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ght © 2020 KSAE/ 11706 pISSN 12299138/ eISSN 19763832
ANALYSIS OF FORCE TRANSMISSION CHARACTERISTICS OF MODULAR DEFORMABLE TIRE Kongshu Deng*, Lu Zeng, Yicheng Ding and Zhurong Yin Engineering Research Center of Advanced Mining Equipment, Ministry of Education, Hunan University of Science and Technology, Xiangtan 411201, China (Received 28 August 2019; Revised 18 November 2019; Accepted 10 December 2019) ABSTRACTIn order to improve the explosion-proof, puncture-proof and safety performance of tires, a new type of modular deformable tires which can be used in complex road conditions has been put forward. The main innovation is the absence of so-called inner tubes and the modular design of the tire — which mainly consist of six petal-shaped connecting blocks and wheel frames. Firstly, this paper analyzes the structure and working principle of the tire. On this basis, the mechanical modeling of the tire under driving and braking conditions has been established. At last, through ADAMS software, the dynamic simulation of this tire under four circumstances of driving, accelerating, decelerating and braking has been carried out, and the response characteristic curves have been obtained The simulation results show that the force transmission performance of the modular deformable tire is rather good under the above four conditions. The simulation results provide a theoretical foundation and guidance for the structural design of new modular deformable tires. KEY WORDS : Modular deformable tire, Petal-shaped connecting block, Air cavity, Force transmission characteristic, ADAMS
1. INTRODUCTION
problems that inflatable safety tires encountered. It has a very good ability to cross the barrier, in addition, the modular design can be used to remove and replace the damaged part separately, reducing the repair cost. In order to achieve the above purposes, the adopted design scheme is as follows: the rim of the wheel skeleton is equipped with a ring tread formed by a number of detachable tire body modules at equal intervals; Each of the tire body modules is connected with a column-type cylinder arranged in the spoke; The air cavity of each column-type cylinder is connected with each other, and the air cavity is a closed cavity arranged in the spokes and rim; The rim is provided with a valve core that is inflated to the air cavity. The advantages of the tire structure design are as follows: the use of modular tire body module replaces the traditional settings — the tire on the rim, and because there is no so-called “inner tube”, it can prevent puncture phenomenon, so as to improve the safety of the tire; The cushion of the tire relies on several cylinders set in the spokes to support the tire body module. When the tire is impacted, the cylinder can absorb the shock rapidly and achieve good shock absorption effect. Therefore, the tire has the cushioning performance of “inner tube type” tire; The part in contact with the ground adopts wear-resistant rubber block, which can enhance the elasticity of the tire and can be used for a l
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