工程车辆翻新轮胎各层应力数值模拟分析

Layer Stress Numerical Simulation Analysis of Engineering Vehicle Refurbished Tires

为了深入了解工程翻新轮胎在使用中出现的胎面磨损加剧、崩花掉块、胎面脱层、被压爆、刺爆的失效形式,构建了工程车辆翻新轮胎计算机几何模型、与地面接触模型、有限元模型,数值模拟分析了胎面层、缓冲层、带束层、胎体层、胎侧层、趾口胶层等各层的应力及剪应力分布状况,获得了如下主要结论:工程翻新轮胎的带束层所受应力最大,胎体层次之,带束层与胎体层应力分布规律相近,胎面层和缓冲层所受应力相对较小;带束层所受剪切应力最大,其次为胎体层,缓冲层的剪切应力较胎面层稍大,而缓冲层剪切力与带束层剪切力相差较大,二者存在较大梯度。研究成果可为工程翻新轮胎的结构设计、使用性能及动力性能、失效机理分析提供理论指导。

In order to have some insight into failure modes of wearing and tearing of tread,crash and block,tread separation of tire tread,and of that are to be crushed and punctured during usage of engineering refurbishment tire,computer geometry models,contact with groud models,and the finite element models of engineering vehicle refurbished tire were constructed,and distribution situation of stress and sheer stress of layers,such as： tread layer,buffer layer,belt layer,tire body layer,tire side layer,toe and mouth rubber layer and so on,were analyzed using numerical simulation. The following main conclusions were obtained： if the stress on the belt layer of engineering refurbished tire was maximum,the second was the tire body layer,and stress distribution law of the belt layer and thetire body layer was similar,then stress on the tread layer and the buffer layer was relatively small; if the sheer stress on the belt layer was maximum,the second was the tire body layer,and the shear force of the buffer layer was slightly larger than that of tread layer. However,the shear force of the buffer layer was greatly different from that of the belt layer,and both had a larger gradient. The research results can provide important theoretical guidance for the structural design, using and dynamic performance and failure mechanism analysis of the engineering refurbished tire.