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基于Solid Edge的液压虚拟样机平台的研究和开发
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摘要
虚拟样机技术利用计算机在虚拟可视化方面的优势以及可交互式地探索虚拟物体的功能,对产品进行几何、功能、制造等许多方面交互的建模与分析,能够反映实际产品的特性,包括外观、空间关系以及运动学和动力学的特性。可以通过虚拟样机设计中反馈的信息不断地指导设计,保证产品寻优开发过程顺利进行。
     本文在深入了解CAD的发展近况和分析目前现代设计方法的基础上,提出了液压系统虚拟样机技术的概念,论述了虚拟样机技术对于提高产品质量、缩短设计开发周期、降低成本的优点,以及发展这门技术在实践方面的意义。论文是围绕着设计开发出液压系统虚拟样机设计平台的工作而展开的。论文分析研究了开发液压系统虚拟样机设计平台的关键问题:首先,研究了组件对象模型(COM)技术的思想方法在软件开发中的应用,提出了基于Solid Edge三维建模软件,融合ANSYS、MATLAB等仿真分析软件的功能进行液压虚拟样机设计平台的开发思路,确定了该软件系统的基本框架。其次,针对液压系统中集成阀块等非标件的结构设计灵活而复杂的特点,提出了由粗到精、自顶向下的设计过程,在三维虚拟装配环境下进行非标件的详细结构设计,圆满地解决了集成阀块和管道布局设计难的问题;第三,通过采用VB编程语言,完成了供液压系统从原理图的设计到三维图模型的辅助建立,再到虚拟样机的试验仿真的液压虚拟样机设计平台的软件。最后,在该软件平台上对攀钢冷轧伺服油缸试验台进行了虚拟样机设计的实践,完成了试验台的三维模型的建立、液压集成阀块的详细设计、液压管道的合理布局设计、试验台的仿真试验和试验台机架的受力有限元分析,对本平台软件进行了初步校验,取得了比较满意的结果。由于设计开发液压系统虚拟样机平台软件是一项复杂的、基础性的细致工作,(?)此本论文的研究工作仅仅为开发液压系统虚拟样机设计软件进行了初浅的探索。
Making use of the advantage of computer in the aspect of visual virtual object and interactive function, virtual prototype technique can make modeling and analyze production in many aspect, such as geometry, function and manufacture and so on. The virtual prototype can reflect some characteristics of real production, including appearance, interspace relation, kinematics and kinetic. It can assure developing excellent production by the feedback information in the virtual prototype design process.
    Based on the intimate understanding of recent development of CAD and the analysis of current modern design method, the concept of hydraulic virtual prototype technique is put forward. The quality of products can be improved, the period of designing and developing can be cut short and the production cost can be reduced when the virtual prototype technique is adopted. The significance in practice of developing this kind technique is discussed in this paper. Centered on developing hydraulic virtual prototype, some key points have been analyzed. First, the idea of component object model (COM) applied in software developing is studied. Based on the three-dimensional model software ?Solid Edge, the developing thinking of designing the hydraulic virtual prototype is formed, which combines the analyzed functions of some imitation software such as ANSYS and MATLAB. Then, the basic frame of this software system is determined. Second, in accordance with the flexible and complex characteristics, the structure designing
     process for non-standard work-piece like integrated value in hydraulic system under three-dimensional virtual assembly environment is put forward, which is from rough to precise and from top to bottom. The difficulty with layout of integrated value pieces and pipelines is completely solved. Third, the software with using VB programming language is accomplished, which realizes the supplementary establishment for hydraulic system from principle draft to three-dimensional drawing model, then to hydraulic virtual prototype with the aim of experimental imitation. Finally, the virtual prototype designing practice to servo-cylinder test platform in cold rolled factory of PanZhiHua iron & steel company is carried on. The three-dimensional prototype of test platform is established; the design for hydraulic integrated value pieces and the reasonable layout of pipelines are finished; the imitation test of test platform and the limited unit analysis to the forces which test platform stand received are also carried on.
    The satisfying results are acquired through preliminary correction and test. Due to the complex character and basic nature, the superficial exploration for developing the software of hydraulic virtual prototype has been carried on in this paper.
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