毕业设计_ansys实心轮胎的有限元分析.zip

关于实心轮胎的ANSYS有限元分析的完整毕业设计，包括任务书，开题报告，说明书，答辩PPT。

摘 要
　　　随着汽车工业的迅速发展，对轮胎的性能提出越来越高的要求。由于聚氨酯胎在各方面表现出优良的性能，其代替橡胶轮胎是世界轮胎工业的发展方向。其中，聚氨酯实心轮胎适用于低速重载的环境，广泛应用于各种工业车辆、建筑机械车辆、港口机场的拖挂车辆等，但是由于导热性差，易产生热破坏。所以，研究聚氨酯实心轮胎内部温度场的变化规律，找出轮胎温升的影响因素，对轮胎设计和研究具有重要的参考价值。
　　　本文应用大型有限元分析程序ANSYS，通过适当简化处理，建立了聚氨酯实心轮胎在滚动状态下的力场模型，通过计算节点生热率再作为负载导入到温度场有限元模型中，进行实心轮胎的温升有限元计算，得到温升规律并进行分析。结果发现，随速度的增加，径向应力应变减小，随厚度的增加，径向应力减小，应变增大，随着载荷的增加，径向应力应变均增大；温度场最高温度在胎心部位，且随着速度，胎厚，载荷的增加而增加。
　　　
关键词：实心轮胎，力场，温度场，有限元分析
　　　
　　　Finite element analysis in PU solid tire
　　　Abstract
　　　  Tire’ service performance is required more and more severe along with speedy development of automobile industry. Polyurethane (PU) tire substitute for rubber tire due to the material’s better performance is increasingly a trend. Polyurethane solid tires apply to low speed and heavy environment such as industrial and architectural trucks or gun towing truck. However, as a result of poor thermal conductivity, this kind of tires is vulnerable to thermal damage. So, research of PU solid tire inner temperature field changes, finding out the influencing factors of temperature rising of tire, has important reference value to tire design and research.
　　　In this paper, finite element models for the force field of polyurethane solid tires in rolling state was established through appropriate simplified by ANSYS. Through the calculation of heat generate rate of node introduced into the finite element model of temperature field as the load, temperature rise for solid tire finite element can be calculated and we can analysis the temperature regularity. It was found, with increased speed, radial stress strain decreases; With the increasing of the thickness, the radial stress decreases and the radial strain increases; With the increasing of load, radial stress and radial strain increases. The maximum temperature produced in the fetal position, and increasing with the speed, tire thickness, load increases.
　　　
　　　Keyword: Solid tires; Force field; Temperature field; Finite element analysis
　　　
　　　
　　    

目   录
1　绪论 1
1.1　引言 1
1.2　PU实心轮胎的优良性能 1
1.3　PU实心轮胎的研究进展 2
1.4　PU实心轮胎存在的主要问题 3
1.5　ANSYS软件简介 3
1.6　国内外运用有限元方法对汽车轮胎的研究概况 4
1.7　本文研究内容和意义 6
2　聚氨酯实心轮胎的有限元模拟 7
2.1　聚氨酯实心轮胎有限元模拟的关键技术 7
2.1.1　单元模型的选取 7
2.1.2　材料模型 9
2.1.3　几何模型 10
2.1.4　单元生成 10
2.1.5　有限元约束加载与求解 10
2.1.6　实心轮胎生热率的计算 11
2.1.7　边界条件的确定 12
2.1.8  实心轮胎温度场有限元模型的建立 12
2.2　聚氨酯实心轮胎的有限元模拟过程 13
2.2.1　聚氨酯实心轮胎应力场的有限元模拟 13
2.2.2　聚氨酯实心轮胎温度场的有限元模拟 18
3　结果与分析 21
3.1　应力场模拟结果及分析 21
3.2　温度场模拟结果与分析 26
4　总结 33
参考文献 34
致谢 37