汽车横向稳定杆有限元分析

车辆工程专业毕业论文，论文编号:JX893  论文字数:11487.页数:31

摘     要
 
 横向稳定杆作为汽车底盘悬架系统中的重要零部件之一，可以在保证汽车行驶平顺性的前提下提高悬架的侧倾角刚度，使汽车在路况不平或者转弯时能够减少车身倾角、行驶平稳，即兼顾汽车的操纵稳定性。目前市场上无论轿车、运动型多功能车等基本都配装了横向稳定杆，客车、卡车也越来越多的装配了横向稳定杆。装有稳定杆的车辆行驶较稳定、舒适，翻车几率大大降低。据统计，在路况差，急转弯时，装有稳定杆的车辆翻车概率降低60%～80%。因此，在汽车悬架的设计过程中，横向稳定杆的设计计算显得尤为重要。采用传统的力学方法，只能近似的反应其受力状况和变形情况，远不能满足进一步分析的需要，而ANSYS软件正是针对解决这一类问题设计的。它是目前最先进的分析方法，其利用基于理论平台的有限元技术分析、预测、评价这些关键零件的强度刚度。
 本文所述就是利用ANSYS软件对横向稳定杆进行三维建模、定义单元类型及材料属性、划分网格，然后对特定的节点施加相应的约束，再对横向稳定杆的一段的特定节点施加力，最后用ANSYS软件中的处理器对上述的操作进行计算，分析结果。最后提出提高稳定杆性能的方案。

关 键 词：横向稳定杆 有限元 刚度

Abstract
 Stabilizer bar suspension system of a vehicle chassis in one of the important parts, you can ensure vehicle ride comfort under the premise of the roll angle increased suspension stiffness, making the car turn in the road uneven, or when the body can reduce the angle, smooth ride that both the car handling and stability. Currently on the market regardless of cars, sport utility vehicles are equipped with the basic installation of the horizontal stabilizer bars, buses, trucks, more and more of the assembly of the horizontal stabilizer bar. Vehicles equipped with a stabilizer bar in the stable, comfortable, greatly reduce the chance of rollover. According to statistics, poor road conditions, a sharp turn when the vehicle overturned with stabilizer bar reduces the probability of 60% to 80%. Therefore, the design process of vehicle suspension, stabilizer bar design and calculation is very important. Traditional mechanical methods can only approximate the response to the loading force and deformation, can not meet the need for further analysis, and ANSYS software is the solution to this kind of problem for the design. It is the most advanced analytical methods, the use of finite element based on theoretical platform technical analysis, prediction, and evaluation of these key components of the strength of stiffness.                                                        
 ANSYS software described in this article is to use three-dimensional modeling of the horizontal stabilizer bar, the definition of cell types and material properties, meshing, and then put the corresponding node on the specific constraints, and then a section of the surface of the roll bar to exert power, and finally ANSYS software processors operating on the above calculated results. From the results obtained after the force displacement data, through the angular stiffness formula of calculation of angular stiffness, then the results will be compared with the traditional calculation method.

Key words:  Stabilize bar, FEM, Stiffness

目 录
摘     要 i
Abstract ii
目 录 iii
第一章  绪论 1
1.1研究目的 1
1.2研究现状 2
1.3研究方法 2
1.4论文内容概述 3
1.5论文课题的来源 3
第二章 有限元法和ANSYS软件 4
2.1 有限元分析软件ANSYS 4
2.1.1前处理模块 4
2.1.2分析计算模块 5
2.1.3后处理模块POST1 6
2.1.4 ANSYS软件的结构 6
2.2 有限元法介绍 7
2.2.1有限元法基本概念 7
2.2.2 有限元法的一般程序结构 9
第三章 横向稳定杆有限元分析 11
3.1 引言 11
3.2 横向稳定杆介绍 11
3.3 横向稳定杆研究方法 11
3.3.1横向稳定杆计算公式 11
3.3.2 横向稳定杆的主要影响因素分析 13
3.3.3 横向稳定杆弯曲处曲率半径的确定 13
3.4 对横向稳定杆建模、划分网格及后处理 14
3.4.1 定义工作文件名和工作标题 14
3.4.2 定义单元类型及材料属性 14
3.4.3 建立中心轴线 14
3.4.4 采用拖动生成3D图 15
3.4.5 划分网格 16
3.4.6 施加约束 17
3.4.7 施加载荷 18
3.4.8软件计算 18
3.5 计算结果分析 18
3.5.1 应力分析 18
3.5.2 角刚度计算 21
3.5.3 结果分析 21
第四章 总结 22
参考文献 23
致   谢 24
附录 命令流 25

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