摘要通过研究轮胎生热机理，在合理的假设基础上，将轮胎温度场分析问题看作具有内热源的热传导模型，建立了滚动轮胎稳定状态下温度场的二维平面模型。采用AUTOCAD建立几何模型及GAMBIT建立网格模型，设定对流边界条件，用FLUENT热分析求解器模拟轮胎在自由滚动下稳态温度场分布。结果表明，轮胎胎冠处、缓冲层、胎肩和胎圈部位的温度相对其他位置较高。而且还通过拟合得到最高温升与车速的线性关系，该公式可以用来简单预测轮胎不同车速稳态的最高温升，对轮胎结构设计与使用有一定的帮助。64353

毕业论文关键词  轮胎  温度场  稳态   FLUENT

毕业设计说明书（论文）外文摘要

Title  Research of the Steady Temperature Field for Automotive    Tyre                                                 

Abstract By studying the theory of tyre heat generation,with the rational hypothesis

of rolling tyre,the problem of temperature field for tyre is simplified as a conduction model with inner heat source and the 2-dimension steady temperature field of rolling tyre is created. Using the software AutoCAD and Gambit, geometry and mesh model both are created. Also, convective boundary condition is set. The tire temperature field distribution is calculated with the Fluent thermal analysis solver. The results show that the temperature of the tire crown, the buffer layer, the shoulder and the bead is higher than the other parts. In addtion,the linear relationship between the highest temperature rise and vehice speed is gotten through fitting.The equation can be used to simply estimate the highest steady temperature rise at different rise at different speeds and has guide significance to tire structure design and tire usage.

Keywords  Tyre  Temperature Field  Steady   FLUENT

1  绪论 1

1．1  研究背景及意义 1

1．2  国内外研究现状 1

1.2.1  轮胎温度场的试验研究 1

1.2.2  轮胎温度场的数值模拟 2

1．3  本文的工作 2

2  轮胎温度场的物理模型 3

2．1  轮胎的结构组成 3

2．2  简化后的几何模型 4

3  轮胎温度场的数学模型 5

3．1  导热问题的数学描述 5

3.1.1  导热微分方程 5

3.1.2  定解条件 6

3.1.3  能量控制方程 6

3．2  内热源模型 7

3.2.1  滞后生热 7

3.2.2  摩擦生热 8

3．3  热边界条件 8

4  轮胎温度场的数值解法 8

4．1  基本思想 8

4．2  数值分析软件FLUENT 9

4.2.1  前处理软件GAMBIT 9

4.2.2  FLUENT求解传热问题的基本过程 10

5  FLUENT求解轮胎温度场