【作者】 韩秀枝；

【导师】 何雪涛；

【作者基本信息】 北京化工大学 ， 机械设计及理论， 2009， 硕士

【摘要】 本文应用大型有限元分析程序ANSYS,建立了子午线轮胎205/60R15的完整有限元模型。在考虑轮胎橡胶材料的非线性、帘线-橡胶材料的各向异性、轮胎大变形导致的各向异性、轮胎与轮辋的装配、轮胎与路面的接触非线性边界条件的基础上,应用改变材料方向轴的方法来模拟带束层的角度,并采用显式积分非线性动力分析程序LS-DYNA对模型进行稳态滚动分析。采用ANSYS/S-DYNA的热隐式-显式顺序求解方法对子午线轮胎滚动阻力进行了模拟分析。利用LS-DYNA的流-固耦合分析功能对子午线轮胎水滑特性进行了分析。本文分析了子午线轮胎在充气压力和垂直载荷下,制动、滚动、驱动工况下的胎体变形、接触压力的状态。在此基础上,根据轮胎橡胶材料滞后生热特性,采用热-结构耦合分析方法对子午线轮胎稳态滚动阻力进行了有限元分析。着重研究了轮胎行驶速度、充气压力、垂直载荷、胎冠胶弹性模量、带束层帘线角度五个参数对轮胎稳态滚动阻力的影响。结果表明行驶速度和垂直载荷对轮胎滚动阻力的影响较大,轮胎滚动阻力随行驶速度和垂直载荷的增大而增大。充气压力和带束层帘线角度对滚动阻力的影响不是特别明显。此外,本文还对轮胎在湿滑路面从行驶到发生水滑现象过程中的水流状态进行了研究。更多还原

【Abstract】 A finite element model of radial tire which type is 205/60R15 was built by ANSYS which is a large finite element analysis procedure. Based on the consideration of nonlinear property, geometric nonlinearity caused by the large deformation of tire, assembling of tire with rim, contraction force of cord and nonlinear boundary conditions resulting from the contact of tire with road, belt angle was simulated by changing the direction of material axis and the steady state rolling analysis was performed by using LS-DYNA which is an explicit integral nonlinearity dynamical analysis procedure. The radial tire rolling resistance was simulated and analyzed by using thermal implicit-explicit order solution method of ANSYS/LS-DYNA. The fluid-solid coupling analytic function was used for the analysis of radial tire hydroplaning .The tire deformation and contact pressure of tire which suffered inflation pressure and vertical load in braking condition, rolling condition and driving condition was analyzed in this paper. Based on the dynamic analysis of tire and thermal energy loss, the analytic method of thermal-structure coupling was used to the finite element analysis of radial tire steady state rolling resistance. The influence of five parameters which include speed, inflation pressure, vertical load, crown compound elastic modulus and belt angle to tire steady state rolling resistance was mainly studied. The results show that speed and vertical load have an important influence on tire rolling resistance. Tire rolling resistance increase with speed and vertical load. The influence of inflation pressure and belt angle to tire rolling resistance was not very obvious. In addition, the water flow state when tire occurred hydroplaning in wet-road was studied in this paper.更多还原