Abstract:

The contours of radial truck tire 12.00R20 and 385/55 R22.5 were redesigned by using the Sakai Hideo's nonequilibrium contour theory, Frank's nonequilibrium contour theory and the optimized nonequilibrium contour theory, which were based on the current nonequilibrium contour design theories of radial tire. Tire wear, rolling resistance and grip performances of radial tires with designed contours were analyzed comprehensively through finite element analysis. The results show that, Sakai Hideo's design theory suits for the tires with small aspect ratio; Frank's design theory suits for the tires with large aspect ratio; the optimized nonequilibrium tire contour will enhance the tire performances such as tire wear, rolling resistance and so on. Tire inner contour holds great influences on the performances of the tires, especially on tire rolling resistance. The optimized nonequilibrium contour provides a guidance to reduce the tire rolling resistance. The optimized nonequilibrium tire contour design can breakthrough the target conflicts in tire performance.

Key words: vehicle engineering, new nonequilibrium contour, structural design, tire wear, rolling resistance

摘要：

在分析现有子午线轮胎非自然平衡轮廓设计理论的基础上，以12.00R20和385/55R22.5两种规格载重子午线轮胎为研究对象，利用酒井秀男非自然平衡轮廓理论、Frank非自然平衡轮廓理论及新非自然平衡轮廓理论对胎体轮廓进行设计。利用有限元分析技术，从轮胎磨损、滚动阻力、抓地力等方面，对三种轮廓理论设计的两种规格轮胎的性能进行综合对比分析。结果表明：酒井秀男的设计理论适合于断面高宽比较大的轮胎；Frank的设计理论适合于断面高宽比较小的轮胎；新非自然平衡轮廓理论设计能够减小轮胎磨损，降低滚动阻力等；轮胎胎体轮廓设计对轮胎性能具有重要影响，尤其对滚动阻力具有显著影响，新非自然平衡轮廓设计理论为低滚阻轮胎设计提供了方向参考；新非自然平衡轮廓设计理论可解决轮胎性能间不相容的难题。

关键词: 车辆工程, 新非自然平衡轮廓, 结构设计, 轮胎磨损, 滚动阻力