汽车起重机液压系统的多平台CAE研究

发布时间：2018-01-17 00:24

本文关键词：汽车起重机液压系统的多平台CAE研究　出处：《沈阳建筑大学》2012年硕士论文　论文类型：学位论文

【摘要】：汽车起重机是一种广泛应用于国民经济建设领域的流动式起重设备，它是一种主要涉及结构、液压、控制等多学科的复杂机械系统，而随着我国国民经济建设的迅猛发展，其需求量越来越大，同时对性能要求也越来越高。通常汽车起重机的工作机构均由液压驱动，液压系统特性在很大程度上决定了整机性能。因而，对液压系统进行深入研究以改善其性能便成为汽车起重机研发过程中的重要一环，而研究的重要和有效手段是计算机仿真。汽车起重机作为涉及机械、液压、控制等多个学科的复杂机械系统，仅仅基于单一学科对汽车起重机液压系统进行仿真分析已显现出明显的局限性。本文基于多学科联合建模仿真理念，借助机械动力学仿真软件ADAMS、液压仿真软件AMESim分别构建了汽车起重机液压系统的机械、液压系统模型，通过接口文件实现汽车起重机机械与液压系统的仿真数据共享，完成汽车起重机液压系统的机液联合仿真，从而为涉及多学科复杂机械的仿真分析提供更加贴近实际的建模仿真分析方法。为了使这种多学科联合仿真方法便于实际使用，利用VB语言建立了汽车起重机液压系统基于ADAMS和AMESim的机液一体化仿真平台，通过编制专用接口文件，可以完成该平台对ADAMS和AMESim软件的调用，建立两种软件之间仿真数据的实时传递和共享机制，从而较为容易地实现汽车起重机液压系统的机液联合仿真。通过该平台对QY20汽车起重机起升机构的机液联合仿真表明，系统运行可靠，可以实现起升机构的机液一体化建模与仿真，仿真和现场实验结果对比表明，多学科联合仿真的流量、压力仿真曲线与试验曲线误差都在6%以下，，而采用单一AMESim软件仿真相应的仿真结果误差在10%上下波动。这说明，基于多平台CAE技术的联合仿真较单一学科仿真具有更高的结果准确性。这种基于多平台CAE技术的汽车起重机液压系统分析方法的实现、相应仿真平台的构建和使用，对涉及多学科的其它工程机械系统分析也具有借鉴意义。
[Abstract]:Truck crane is a kind of mobile lifting equipment which is widely used in the field of national economic construction. It is a complex mechanical system mainly involved in structure, hydraulic pressure, control and so on. With the rapid development of China's national economy, its demand is increasing, and the performance requirements are becoming higher and higher. Usually, the working mechanism of truck crane is driven by hydraulic pressure. The characteristics of hydraulic system to a large extent determine the performance of the whole machine. Therefore, the in-depth study of hydraulic system to improve its performance has become an important part of the research and development process of truck crane. The important and effective means of research is computer simulation. Truck crane as a complex mechanical system involving mechanical, hydraulic, control and other disciplines. The simulation and analysis of the hydraulic system of truck crane based on a single subject has shown obvious limitations. Based on the concept of multidisciplinary joint modeling and simulation, this paper makes use of the mechanical dynamics simulation software ADAMS. The hydraulic simulation software AMESim constructs the mechanical and hydraulic system models of the truck crane hydraulic system respectively, and realizes the sharing of the simulation data between the truck crane machinery and the hydraulic system through the interface file. The combined simulation of hydraulic system of truck crane is completed, which provides a more practical modeling and analysis method for the simulation and analysis of multi-disciplinary complex machinery. In order to make this multi-disciplinary joint simulation method easy to be used in practice, the hydraulic system of truck crane based on ADAMS and AMESim was established with VB language. By compiling the special interface file, the platform can complete the transfer of ADAMS and AMESim software, and establish the real-time transfer and sharing mechanism of simulation data between the two kinds of software. Therefore, it is easy to realize the joint simulation of the hydraulic system of truck crane. The simulation of the lifting mechanism of QY20 truck crane by this platform shows that the system is reliable. The integrated modeling and simulation of hoisting mechanism can be realized. The results of simulation and field experiments show that the error of flow, pressure simulation curve and test curve of multidisciplinary joint simulation is less than 6%. The error of the simulation results with a single AMESim software is about 10%, which shows that. The result of joint simulation based on multi-platform CAE technology is higher than that of single subject simulation. The realization of the hydraulic system analysis method of truck crane based on multi-platform CAE technology and the construction and use of the corresponding simulation platform also have reference significance for the analysis of other construction machinery systems involving many disciplines.
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH213.6;TP391.9

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