A Simple Method of Handling Thermomechanical Coupling for Temperature Computation in a Rolling Tire
A Simple Method of Handling Thermomechanical Coupling for Temperature Computation in a Rolling Tire
复制标题
处理滚动轮胎温度计算的热机械耦合的简单方法
DOI：
--
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
A. Goldstein
中科院分区：
文献类型：
--
作者：
S. Futamura;A. Goldstein
由于温度对充气轮胎的力学状态和粘弹性能量耗散的影响，充气轮胎的热力分析是一个非常复杂的过程。这种耦合的热-力学行为通常要求滚动轮胎温度迭代确定。因此，稳态分析涉及随着解的进行而更新温度相关的弹性和粘弹性特性。在非稳态分析中，该过程更加复杂，因为材料特性需要在多个时间间隔内更新。提出了一种简化方法。首先，利用“变形指数”表征轮胎弹性响应对材料刚度变化的敏感性。然后，利用商业有限元程序和适当的用户子程序，利用涉及温度相关材料特性的简单代数表达式，将热量生成表示为局部温度的函数。
Abstract The thermomechanical analysis of a pneumatic tire is a highly complex process due to the effects of temperature on both the mechanical state and the viscoelastic energy dissipation in the tire. This coupled thermomechanical behavior typically requires that rolling tire temperatures be determined iteratively. As a result, a steady‐state analysis involves updating the temperature dependent elastic and viscoelastic properties as the solution proceeds. The process is further complicated in a non‐steady‐state analysis where material properties need to be updated at multiple intervals in time. A simplified method is proposed. First, the sensitivity of the tire elastic response of the tire to changes in material stiffness is characterized using the “deformation index”. Then, using a commercial finite element program and an appropriate user subroutine, heat generation is expressed as a function of the local temperature using a simple algebraic expression involving the temperature dependent material prope...