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建立轮胎-悬架-车身系统的考虑时间延迟的轮胎多边形磨损动力学模型,探讨基于自激励振动理论的轮胎多边形磨损现象。研究表明:轮胎多边形磨损是一种典型的非线性自激励振动,不同车型、不同轮胎磨损状况下,系统的自激励振动频率不同,常见频率区间为100～400 Hz;轮胎周向多边形磨损现象即自激励振动出现在特定的车速区间;轮胎多边形磨损的边数等于自激励振动系统的固有频率和车轮转动频率之比;轮胎在特定频段的固有频率对自激励系统振动有很大影响。
Tire - Suspension - Body System Tire Polygon wear kinetic model considering time delay was established to investigate the wear phenomenon of tire polygons based on self - excited vibration theory. The results show that the polygon wear of tire is a typical nonlinear self-excited vibration. Under different tire wear conditions, the self-excited vibration frequencies of the system are different. The common frequency range is 100-400 Hz. The self-excited vibration appears in a specific speed range. The polygon wear side of the tire equals the natural frequency of the self-excited vibration system and the wheel rotation frequency. The natural frequency of the tire in a specific frequency band has a great influence on the vibration of the self-excited system.