二系垂向油压减振器的阻尼性能研究

发布时间：2018-02-25 01:02

本文关键词： 二系垂向阻尼性能流场仿真系统动力学仿真示功图　出处：《西南交通大学》2014年硕士论文　论文类型：学位论文

【摘要】：机车车辆在线路上运行的时候,路面的不平顺将直接通过车轮传递到车体上,引起机车上下、左右振动。如果不安装减振器,这种振动会随着机车速度的提升而加剧,使机车使用寿命减小。也就是说,减振器的质量以及技术直接影响着铁路机车的提速。本文首先利用ANSYS CFD仿真软件,以二系垂向油压减振器的结构为基础,介绍了其工作原理。在ProE中建立了二系垂向油压减振器的流体模型,然后将模型导入ICEM中划分网格,最后在ANSYS CFX中进行计算。以整个减振器系统为研究对象,利用力学平衡原理、流体力学知识,建立起了二系垂向油压减振器阻尼系统的数学模型,并阐述了随着活塞振动速度不同,油压减振器阻尼阀的不同工作情况。根据在线检测的结果,分析了减振器在不同特殊路况下的阻尼性能,为减振器阻尼性能的仿真奠定了理论基础。其次根据阻尼系统的数学模型,在MATLAB/Simulink里建立了减振器的动态系统模型,考虑了拉伸与压缩行程的模型,以及减振器在不同速度下的不同阻尼阀组合,分别建立了三种工况下的减振器仿真模型,得出了减振器在对应工况下的动态阻尼性能曲线。以株洲联诚减振器公司的试验台为基础,给减振器加载与仿真信号一样的激振信号,测试并记录减振器各项阻尼性能参数,并结合实验所得数据,对比分析了模型的优劣性。最后以液压系统仿真平台AMESim为基础,从液压系统的工作原理出发,建立了二系垂向油压减振器的液压系统仿真模型。将仿真结果与实验结果进行比较,误差在行业标准规定的范围内,说明了AMESim模型是正确的。使用单一参变法分析了减振器关键参数对阻尼的影响。
[Abstract]:When the vehicle running on the line, pavement irregularity will directly through the wheel transfer to the hull, causing the locomotive under Vibration about. If you do not install the vibration damper, which increases as the speed of the locomotive, the locomotive service life reduced. That is to say, the quality and technology of shock absorber affect the speed of railway locomotive.
Firstly, using ANSYS CFD simulation software, with two vertical structure to the oil damper as the foundation, introduces its working principle. Established in ProE two vertical fluid damper model, and then the mesh model into ICEM, finally calculated in ANSYS CFX. In the whole vibration system as the research object, using the mechanical balance principle, the knowledge of fluid mechanics, established the mathematical model of two vertical damper damping system, and expounds the vibration velocity with different piston, the different working condition of hydraulic damper damping valve. According to the online detection results, the damping performance of damper in different special conditions the analysis lays a theoretical foundation for the simulation of the damping performance of damper.
Secondly, according to the mathematical model of damping system, in MATLAB/Simulink in the dynamic system model of shock absorber is established, considering the tensile and compression stroke of the model, as well as the shock absorber in different speed under different damping valve combination, the damper simulation model under three conditions are established. The dynamic damping performance curve in the corresponding conditions. The shock absorber is obtained. Test bench in Zhuzhou Liancheng shock absorber company as the basis, to the vibration damper load and simulation signal, test and record the performance parameters of the damping shock absorber, and combined with the experimental data, comparative analysis of the advantages and disadvantages of the model.
At last the simulation platform of AMESim hydraulic system as the foundation, starting from the working principle of the hydraulic system, set up two vertical simulation model of the hydraulic system of hydraulic damper. The simulation results are compared with experimental results, the error in the range of industry standard, describes the AMESim model is correct. Using a single parameter analysis method the influence of key parameters on the damping shock absorber.

【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U270.33;TB535.1

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