实心橡胶轮胎非线性粘弹性生热行为和滚动阻力的热力耦合分析  

Thermo-mechanical Coupling Analysis of Heat Build-up and Rolling Resistance due to Nonlinear Viscoelasticity for Solid Rubber Tire

作　　者：李昭[1] 刘枫 李凡珠[1] 杨海波[1] 卢咏来[1] 张立群[1] LI Zhao;LIU Feng;LI Fanzhu;YANG Haibo;LU Yonglai;ZHANG Liqun(Beijing University of Chemical Technology,Beijing 100029, China)

机构地区：[1]北京化工大学有机无机复合材料国家重点实验室

出　　处：《轮胎工业》2019年第7期390-396,共7页Tire Industry

基　　金：国家重点基础研究发展计划(973计划)项目

摘　　要：基于非线性粘弹性理论和热力耦合的有限元分析方法研究天然橡胶纳米复合材料制备的实心轮胎的瞬态温升行为和滚动阻力特性。热力耦合分析包含变形分析、热源分析和热传递分析3个相互关联的步骤。变形分析中,橡胶的超弹性本构方程基于单轴拉伸、平面拉伸和等双轴拉伸试验数据,采用100阶傅里叶正弦级数精确地分析轮胎滚动一周的应变响应历史数据;热源分析中,基于试验数据和自编算法建立热源与加载应变、频率、温度以及加载周次间的函数关系;热传递分析中,同样基于试验数据建立橡胶热学参数与温度的关系。采用滚动阻力测试仪验证数值结果,证实所提出的算法预测轮胎滚动阻力和瞬态温度分布的可靠性。最后基于参数化数值试验研究不同加载位移和转速条件下热导率和损耗因子对轮胎温升和滚动阻力的定量影响。该研究可为高性能轮胎设计提供理论指导和相关分析方法。The transient temperature and rolling resistance of a solid rubber tire made of natural rubber nanocomposite were analyzed based on the thermo-mechanical coupling approach and nonlinear viscoelastic theory by using finite element method.The thermo-mechanical coupling approach could be divided into three major parts:deformation,dissipation,and thermal transfer modules.In the deformation module,uniaxial,planar,and equibiaxial tensile tests were used to determine the hyperelastic constitutive equation.The 100 thorder Fourier sine series was used to approximate the strain amplitude.In the dissipation module,the loss modulus was updated as a function of strain amplitude,temperature and frequency.In the thermal transfer module,the dependence of thermal parameters on temperature was established.A rolling resistance tester was also used to verify the numerical results,which revealed that the proposed analytical method was a reliable approach to predict rolling resistance and transient temperature distribution for tires.At last,the dependence of rolling resistance and heat build-up on thermal conductivity and loss factor was investigated quantitatively by the parametric numerical experiments.The work could provide theoretical guidance and relevant analysis methods for the design of high performance tire.

关 键 词：天然橡胶 纳米复合材料 实心橡胶轮胎 有限元分析 非线性粘弹性 滚动阻力 热力耦合 

分 类 号：TQ332[化学工程—橡胶工业] O241.82[理学—计算数学]