悬架及转向系统结构设计与强度分析
关键词 FSAE 悬架 转向系统 关键零件 有限元分析8192
Title Design of Formula-SAE Racing Car Structure Design and Strength Analysis of Key Parts
of Suspension and Steering System
Abstract
Suspension system and steering system are important to the kinetic
characteristic of the Formula-SAE racing car. The strength reliability of
the key components of the two systems directly determine the racing car's
safety performance. The object of this research is FSAE racing car of
Nanjing University of Science and Technology. According to the
requirements of racing performance and the general arrangement, the
structures of the FSAE racing car suspension and steering system were
chosen, the relevant performance parameters were calculated, the
structures of hub, rear upright and steering knuckles were designed, and
the 3D models of these key parts were built by using CATIA, loading
conditions of the three extreme conditions in the motor process of FSAE
racing car were analyzed, the stress and the distortion analysis were
carried out using finite element analysis software Hypermesh and Nastran,
the displacement and stress clouds were obtained, and the results were
analyzed at last.
Keywords FSAE, Suspension, Steering system, Key parts, Finite element
analysis 目 次
1 绪论 1
1.1 FSAE赛事简介 . 1
1.2 FSAE国内外发展现状 . 2
1.3 方程式赛车的悬架 .. 3
1.4 方程式赛车的转向系统 5
1.5 有限元理论 .. 6
1.6 本课题研究的意义 .. 8
2 悬架系统的结构设计 .. 8
2.1 赛车悬架设计要求 .. 8
2.2 悬架结构形式选择 .. 8
2.3 相关整车结构参数确定 9
2.4 悬架设计参数确定 10
2.5 主要零件结构设计 13
2.6 本章小结 . 16
3 转向系统的结构设计 17
3.1 转向系统概述 .. 17
3.2 转向系统设计要求 17
3.3 转向系统结构形式选择 . 17
3.4 转向系统主要设计参数 . 18
3.5 转向梯形 . 19
3.6 转向节的结构设计 27
3.7 本章小结 . 28
4 关键零件强度分析 . 29
4.1 建立三文几何模型 29
4.2 极限工况及相应边界条件的确定 32
4.3 有限元前处理 .. 49
4.4 数值计算 . 57
4.5 有限元后处理 .. 59
4.6 有限元分析结果评价 .. 59
4.7 本章小结 . 69
结论 . 70
致谢 . 71
参考文献 .. 72
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