Mechanism and Conditions of the Polygonal Wear of Vehicle Tire
作者机构：School of Automotive StudiesTongji UniversityShanghai 201804China NVH DepartmentChangan Auto Global R&D CenterChongqing 400023China
出 版 物：《Automotive Innovation》 (汽车创新工程（英文）)
年 卷 期：2018年第1卷第2期
页 面：167-176页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：The authors acknowledge financial support from the National Natural Science Foundation of China(Grant Numbers 51375343 50775162 and 51305303)
主 题：Tire polygonal wear Tread contact model Self-excited vibration Wear calculation Bifurcation analysis
摘 要：Polygonal wear seriously decreases the lifespan of a tire of a passenger car and adversely affects vehicle dynamic *** present paper builds a model that reflects the dynamic contact characteristics of the tire and reveals the mechanism and conditions of polygonal wear of a *** model describes the dynamic contact behavior of the tread block and considers the characteristics of dynamic friction between the road and tread of a rolling *** numerical bifurcation analysis,the paper reveals the conditions for self-excited vibration of the tread,i.e.,the improper combination of the vertical load,wheel slip angle,tire pressure and vehicle speed considerably strengthen the lateral self-excited vibration of the tread,which is the direct vibrational source of abnormal circumferential polygonal *** polygonal wear of a tire occurs when a vehicle travels for a certain long distance at a so-called polygonal wear *** polygonal wear speed should induce lateral self-excited vibration on the contact tread of the tire and the frequency of the lateral self-excited vibration should be divisible by the rolling frequency of tire that is determined by the polygonal wear *** polygonal wear requires that the vehicle travels at a certain polygonal wear speed for a minimal distance to produce a stably developing polygonal wear pattern even for subsequent driving at variable speed.
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