【作者】 李鹏；

【导师】 柳玉起；

【作者基本信息】 华中科技大学 ， 材料加工工程， 2009， 硕士

【摘要】 CAE技术已在板管成形模拟领域得到广泛的应用,是先进制造技术的重要组成部分。传统CAE软件由于操作繁琐,分析模型与设计模型通过中间数据格式转换时存在数据丢失,已无法适用于“CAE软件面向产品设计全流程”的发展需求。CAD/CAE的一体化集成能很好地避免数据丢失缺陷,降低CAE分析的难度,极大提高产品设计效率,已成为板管成形模拟领域的主流发展趋势。论文结合国家自然科学基金资助项目“面向自主设计的汽车覆盖件成形性快速仿真及工艺优化技术研究”(N0.50575080)和国家科技支撑计划项目“基于SOA的数字化模具设计制造集成系统”(No.2006BAF01A43),深入研究和探讨了基于UG平台的板管成形模拟前处理系统的若干关键技术问题。通过对板管成形基本工艺、CAD/CAE集成系统开发难点、有限元数值模拟软件研究现状、CAD/CAE集成现状进行研究和探讨,明确了未来板管成形有限元模拟前处理系统开发的发展方向,并从UG开发平台的技术特点和系统有限元模拟求解器两个方面介绍了系统的开发基础。以基于UG平台的面向板管成形产品设计全流程的FASTAMP-NX前处理系统为研究对象,从分析模型几何特征定义、有限元网格剖分、成形工具自动装配、系统数据处理、工艺参数处理、成形过程动画显示等方面对系统若干关键技术进行了研究和探讨;通过分析对比主流CAD平台如CATIA、Pro/E、SolidWorks与UG平台的技术共性,论证了FASTAMP-NX前处理系统采用的若干关键技术同样适用于基于上述平台的同类系统的开发。论文最后介绍了FASTAMP-NX前处理系统的总体架构与工作流程,并通过工业应用实例验证了其面向板管成形产品设计全流程的实用性和可行性。更多还原

【Abstract】 CAE technology has been widely applied in sheet & tube forming simulation field, which is the key component of advanced manufacturing technology. The traditional CAE software isn’t suitable for the demand of“CAE software should be available to the total process of product design”due to the defect of complicated operation and the data lost between analysis model and design model when they convert through intermediate data format. CAD/CAE seamless integration can wonderfully avoid the data lost defect, reduce the CAD analysis difficulty and enormously improve the design efficiency, so it’s becoming the main development trend in sheet & tube forming simulation field.The research of this paper is supported by the NSF project“The Independent Research of High-speed Simulation and Optimal Process Design aiming to the Formability of Automobile Panel”(NO.50575080) and the National Key Technology R&D Program“Numerical Die Design and Manufacture System Based on SOA”(No. 2006BAF01A43), which has delved into the key technologies of sheet & tube forming simulation pre-process system based on UG platform.The paper has defined the development direction of the sheet & tube forming simulation pro-process system by means of researching and discussing the sheet & tube forming basic technology, the difficulty of CAD/CAE integrated system’s development, the current research statuses of FE numerical simulation software and CAD/CAE seamless integration. At the same time, it has introduced the development foundation of the system as viewed from UG platform’s technical characteristics and FE solver.The research of this paper is based on the pre-process system of FASTAMP-NX, which is oriented to the sheet & tube forming product design’s total process based on UG platform. The paper also introduces some key technologies of the system from analysis model geometry feature defining, FEM mesh generating, forming tools automatically assembling, system data processing, technical parameters processing and forming process animation displaying. By means of anglicizing and contrasting the common technologies between the mainstream CAD platform such as CATIA, Pro/E and SolidWorks and UG platform, the paper advances the view that the key technologies of the pre-process system of FASTAMP-NX are also suitable for the similar system’s development which is based on above-mentioned platform.At last, the paper introduces the total frame and workflow of the pre-process system of FASTAMP-NX, verifies the practicability and feasibility of system’s sheet & tube forming product design’s total process oriented function by means of industrial application projects.更多还原