子午线轮胎橡胶钢丝粘合性能失效机理及粘合强度动态检测方法研究

Adhesive strength of the radial tire reinforcement materials（rubber-steel wire complex）is very important to the tire life, durability and safety. But the technical evaluation of the adhesive strength for the rubber-steel wire complex is stopping at the most primitive static measurements stage. It is no method to measure the real external impact factors, such as load distribution, quantity of heat, cyclic elastic deformation, loading time, and so on. In our present work, firstly, combined with the advantages and disadvantages of the existing evaluation methods, the stress and strain distribution, calorification, temperature distribution of the rolling radial tire are analysed to get the dynamic stress and strain rule and establish the physics mathematics model for the adhesive strength dynamic measurement of rubber-steel wire complex; Secondly, based on the extreme shape distortion similar principles,a new type dynamic measuremen mechanism for adhesive strength of rubber-steel wire complex would be designed and the related experiment research would be processed; Lastly, the adhesive strength dynamic measurement and life prediction of rubber-steel wire complex would be realized. At the same time, a proper cohesion system and processing technology of the rubber-steel wire would be obtained by researching the failure mechanism of rubber-steel wire's adhesion property .

子午线轮胎骨架材料-橡胶钢丝的粘合强度对轮胎的使用寿命、耐久性及安全性有着至关重要的意义。但目前对橡胶钢丝粘合强度的技术评价仅停留在原始的静态测量阶段，对真正影响粘合强度，造成粘合性能失效的主要外部因素，如载荷分布、生热量、周期变形，加载时间等对粘合强度及其粘合失效的作用机理尚无确切的理论和方法支持。本项目将从研究子午线轮胎在行驶过程中的应力应变规律、生热及温度分布规律入手，掌握橡胶与钢丝帘线间的动态应力应变关系，研究其粘合性能失效机理，建立反映橡胶钢丝动态粘合寿命的相应物理数学模型，从而指导建立橡胶钢丝粘合强度动态测量及寿命预测的理论及技术基础，以最大程度受力和变形相似原则，研制设计新型主加载机构，模拟橡胶钢丝复合体的实际工作状况，通过相关测试方法的研究实现橡胶钢丝粘合强度的动态测量及寿命预测。同时通过对橡胶钢丝复合体粘合性能失效机理的研究，完善橡胶钢丝的粘合体系，改进加工工艺。

本项目按照计划书的规定内容要求，逐项进行了研究。完成了预定的研究目标，达到了预期的研究成果。具体内容为：研究了子午线轮胎在行驶过程中不同载荷状态下，各不同部位的受载及变形规律，采用有限元方法进行应力应变分析，重点研究带束层部位，橡胶钢丝复合体的应力应变规律；利用相关部位的有限元研究成果，提出进一步深入研究所需的动态测试实验设备的设计原理；利用青岛华夏橡胶有限公司的“电脑伺服胶带疲劳拉力试验机”和实验室自行购进的“动态疲劳试验机”，进行橡胶钢丝复合体粘合疲劳强度动态测量方法的初步实验探索，为进一步的深入系统研究奠定了基础。以本项目为依托共发表核心期刊论文6篇，其中1篇为EI核心刊源，待收录；培养研究生4人，毕业2人；作为前期的研究积累，本项目的相关研究成果已经获得国家发明专利授权2项。