转鼓式悬架疲劳试验台设计与仿真

发布时间：2018-04-30 11:36

本文选题：悬架 + 转鼓试验台　；参考：《辽宁工业大学》2016年硕士论文

【摘要】：悬架是车辆重要组成部分之一。目前悬架及其零部件耐久性试验设备在性价比、试验效果等方面存在诸多缺陷,而整车耐久道路试验周期长,花费大。因此开发一款价格低廉,能模拟实际行车环境的室内试验设备已经成为亟待解决的问题。本文根据公路和试验场的路面结构特点,开发了一种应用于二分之一悬架的转鼓式悬架疲劳试验台。根据悬架疲劳试验的要求,提出了试验台的设计方案,对试验台进行了三维建模并对部分关键部件进行了强度分析和优化。提出了基于有限单元法构建虚拟转鼓路面的方法,并基于该方法构建了多种虚拟转鼓路面。建立了试验台和试验车辆后悬架的动力学模型,并进行了动力学仿真试验,验证了基于有限单元法构建虚拟转鼓路面方法的正确性。编写了振动信号的采集和分析系统,并利用该系统进行了实车公路路面和试验场路面试验,采集并分析了多种路面条件下试验车辆的轮心垂向加速度信号。通过与仿真结果对比分析,验证了转鼓式悬架疲劳试验台可以较为准确地复现实际路面。本文的研究成果可以在设计原理上为转鼓式悬架疲劳试验台的开发提供参考,并对相同类型的转鼓试验台产品的研制与改进具有一定的参考价值。
[Abstract]:Suspension is one of the important parts of vehicle. At present, there are many defects in the durability test equipment of suspension and its components, such as the ratio of performance to price and the test effect. However, the test period of the whole vehicle durable road is long and the cost is large. Therefore, the development of a low-cost, can simulate the actual driving environment indoor test equipment has become a problem to be solved. According to the pavement structure characteristics of highway and test ground, a kind of rotary drum suspension fatigue test bed applied to 1/2 suspension is developed in this paper. According to the requirements of suspension fatigue test, the design scheme of the test bed is put forward, and the 3D modeling of the test bed is carried out, and the strength analysis and optimization of some key components are carried out. The method of constructing virtual drum pavement based on finite element method is put forward, and several kinds of virtual drum pavement are constructed based on this method. The dynamic model of the test bed and the rear suspension of the test vehicle is established, and the dynamic simulation test is carried out, which verifies the correctness of the method of constructing virtual rotary drum pavement based on the finite element method. The vibration signal acquisition and analysis system is compiled and used to test the road surface of real vehicle and test ground. The vertical acceleration signal of wheel center of test vehicle under various pavement conditions is collected and analyzed. By comparing with the simulation results, it is verified that the rotary drum suspension fatigue test bench can accurately reproduce the actual road surface. The research results of this paper can provide a reference for the development of the rotary drum suspension fatigue test bench in the design principle and have certain reference value for the development and improvement of the same type of rotary drum test bed products.
【学位授予单位】：辽宁工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U467.52

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