【作者】 张晋辉；

【导师】 杨方；

【作者基本信息】 西北工业大学 ， 机械设计及理论， 2005， 硕士

【摘要】 作为一种由液态金属直接成型复合材料管、棒材类制件的新工艺,液态浸渗-半固态挤压工艺具有工序少、能耗小、成本低、见效快等特点,在汽车、建筑、民用乃至航空、航天等领域有着广泛的应用前景。液—固挤压复合材料成形工艺本身是集凝固、热传导和塑性变形为一体的复杂过程,目前主要从系统建模、工艺参数预测、工艺参数优化、数值模拟和缺陷预测等方面进行研究。这些研究各成体系,研究中所使用的几种软件难以兼容,很难从整体上分析各功能模块之间的关系及影响,给该工艺进行全面深入的分析与研究带来了困难。本文在对液—固挤压复合材料工艺研究方法和原理进行深入分析的基础上,建立了液—固挤压复合材料工艺仿真平台,集成了本课题的主要研究成果,使各模块之间通过界面接口集成到一起,该平台对今后研究内容还具有扩展能力,进而能够满足工艺研究不断发展的需求。 本文利用软件体系结构思想设计了三层结构的液—固挤压复合材料工艺仿真平台框架,采用“4+1”视图方法和UML结合的方式对液—固挤压复合材料工艺仿真平台的软件体系进行了描述。 将液—固挤压工艺研究过程中用到的系统建模模块、参数预测模块、参数优化模块、网络验证模块封装成COM组件,并利用界面接口将这些组件集成到仿真平台中。通过这种开发模式,为液-固挤压工艺的进一步更新换代和功能扩展提供了一种新的途径。 本文采用Visual C++和APDL将液—固挤压工艺的浸渗过程仿真集成到液—固挤压复合材料的仿真平台中。通过这种方式既简化了研究过程中的操作又充分利用了已有的研究成果。并在此基础上定制后处理,使用户可以方便和形象地进行浸渗过程的仿真工作。 本文采用SQL Server 2000建立液—固挤压成形复合材料工艺数据库,实现工艺参数科学存储,减少数据冗余。采用ADO技术实现仿真平台对该工艺数据库管理和使用,为今后工艺研究过程方便和合理选取工艺参数奠定了基础。更多还原

【Abstract】 The liquid infiltration-extrusion technology, as a new forming method which produces the composite tubes, bars, and other shaped products directly from liquid metal, has been developed in recent years with a promising practical application prospect in fields of automobile, architecture, aviation and spaceflight, for its simple working procedure, low cost and good work piece performance. The liquid infiltration-extrusion technology which integrates solidification, thermal conduction, and large plastic deformation is a complex process. So far, system modeling, processing parameter predicting, processing parameter optimizing, process simulating and disfigurement predicting had mainly been researched. These returns were separately, and the different softwares, which were used to study the process, were the difficult to handle together. These lead to not harmonizing the relations of the different functional modules as a whole, and not availably putting these returns in practice use. On the base of analyzing the research technique and methods on the liquid infiltration-extrusion process for fabricating MMC, the paper built the simulation platform on the liquid infiltration-extrusion process for fabricating MMC, which not only concealed most of the results but also possessed the augment-ability for the further study.The paper put forward the architecture of the simulation platform on the liquid infiltration extrusion process for fabricating MMC which was three-layer construction by utilizing the thought of software architecture. The paper firstly described the software architecture of the simulation platform on the liquid infiltration extrusion process for fabricating MMC by mode of combining the ’4+1’ view and the UML.The paper built respectively the component object models for model setting, processing parameter predicting, processing parameter optimizing and network verifying which were used in the process of the studying the liquid infiltration-extrusion technology. The paper integrated these components into the simulation platform by the user interface. The functions are handled conveniently by these friendly user interfaces. The design pattern like that provided a new method to the studying the liquid infiltration-extrusion technology for further.The simulation platform integrated the simulation process of infiltration in the liquid infiltration extrusion technology by combining the visual C++ and APDL file. Through this manner, the platform not only simplified handling the studying process, but also made use of the returns abundantly. Based on it, the customized post-processing made the simulation work more visual and more convenient.The paper built the technical database for the liquid infiltration extrusion process for fabricating MMC, in order to storage process parameters sciertifically and reduce the data redundancy. The paper achieved managing and using the database. The author’s work lay a foundation for the reasonable choose of the process parameters in the futher.更多还原