基于虚拟现实的冲床仿真系统研究与开发
发布时间：2018-11-05 17:38
【摘要】：随着虚拟现实技术的发展,虚拟仿真教学实验系统在专业知识教学和设备操作培训中占据着越来越重要的作用,它以不可或缺的众多优势,弥补了传统高校教学和企业培训过程中存在的诸多问题,满足了日益增长的教学质量和企业人员培训的要求。冲床在国民生产中作为一种最常见的机床,用途十分广泛,而且冲床的操作培训安全要求较高,现阶段的教育资源无法满足学生的实践要求,同时,目前市面上的虚拟冲床教学仿真系统普遍存在功能开发不到位,缺少CAE分析功能和完整冲压工艺过程演示等缺点。为了解决上述问题,在现有的研究成果基础上,本文结合UG,3ds Max和Unity3D开发引擎,基于MVC设计模式的总体框架设计理论以及功能模块化的设计思想,设计开发了一款基于虚拟现实技术的虚拟冲床仿真系统,通过逼真的虚拟场景,功能丰富的交互性操作,全方位的案例教学以及强大的CAE板料分析功能来满足学校和企业的培训需求,提高培训人员冲床的实践操作能力,达到最好的教学成果。本文设计的虚拟冲床仿真系统为满足学生多种CAE分析需求,分别开发了两种不同的板料冲压成形功能,其中板料冲压成形精确分析功能是基于华中科技大学塑性成形模拟及模具技术国家重点实验室柳玉起教授团队设计的FASTAMP板料冲压成形分析软件的算法,加以优化并应用开发的,而另外一种板料冲压成形快速分析功能是基于一种自主设计,以空间网格布尔运算为前提的可适性快速成形算法而开发的。两种功能的结合提供了学生丰富的操作体验。此外,为了满足板料冲压成形分析算法的通用性,本文还设计了一种任意平面域多边形三角剖分算法。此算法考虑了平面多边形的多种特殊情况,在产生最优三角网格的前提下,完美的适用两种板料冲压成形算法,且稳定性高,可适性强,具有非常好的实时性和可靠性。
[Abstract]:With the development of virtual reality technology, virtual simulation teaching experiment system plays a more and more important role in professional knowledge teaching and equipment operation training. It makes up for many problems existing in the process of teaching and enterprise training in traditional colleges and universities, and meets the requirements of the increasing teaching quality and the training of enterprise personnel. As one of the most common machine tools in national production, punching machines are widely used, and the safety requirements for operation training of punching machines are high. At this stage, the educational resources cannot meet the practical requirements of students. At the same time, At present, the virtual punch teaching simulation system on the market has some shortcomings, such as the lack of function development, the lack of CAE analysis function and the complete stamping process demonstration, etc. In order to solve the above problems, based on the existing research results, this paper combines UG,3ds Max and Unity3D development engine, the overall framework design theory based on MVC design pattern and the design idea of function modularization. A virtual punching machine simulation system based on virtual reality technology is designed and developed. The omni-directional case teaching and the powerful function of CAE sheet metal analysis can meet the training needs of schools and enterprises, improve the practical operation ability of the trainers' punching machine, and achieve the best teaching results. The virtual punching machine simulation system designed in this paper has developed two kinds of different sheet metal stamping forming functions to meet the needs of various CAE analysis of students. The precise analysis function of sheet metal forming is based on the algorithm of FASTAMP sheet metal forming analysis software designed by Professor Liu Yuqi, State key Laboratory of plastic forming Simulation and Die Technology, Huazhong University of Science and Technology. The other rapid analysis function of sheet metal forming is based on an adaptive rapid prototyping algorithm based on spatial grid Boolean operation. The combination of the two functions provides students with a rich experience of operation. In addition, in order to satisfy the generality of sheet metal forming analysis algorithm, an arbitrary plane polygon triangulation algorithm is designed in this paper. This algorithm takes into account many special cases of planar polygon. On the premise of generating optimal triangular mesh, this algorithm is perfect for two kinds of sheet metal stamping forming algorithms, and has high stability, strong adaptability, and very good real-time and reliability.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG385.1
[Abstract]:With the development of virtual reality technology, virtual simulation teaching experiment system plays a more and more important role in professional knowledge teaching and equipment operation training. It makes up for many problems existing in the process of teaching and enterprise training in traditional colleges and universities, and meets the requirements of the increasing teaching quality and the training of enterprise personnel. As one of the most common machine tools in national production, punching machines are widely used, and the safety requirements for operation training of punching machines are high. At this stage, the educational resources cannot meet the practical requirements of students. At the same time, At present, the virtual punch teaching simulation system on the market has some shortcomings, such as the lack of function development, the lack of CAE analysis function and the complete stamping process demonstration, etc. In order to solve the above problems, based on the existing research results, this paper combines UG,3ds Max and Unity3D development engine, the overall framework design theory based on MVC design pattern and the design idea of function modularization. A virtual punching machine simulation system based on virtual reality technology is designed and developed. The omni-directional case teaching and the powerful function of CAE sheet metal analysis can meet the training needs of schools and enterprises, improve the practical operation ability of the trainers' punching machine, and achieve the best teaching results. The virtual punching machine simulation system designed in this paper has developed two kinds of different sheet metal stamping forming functions to meet the needs of various CAE analysis of students. The precise analysis function of sheet metal forming is based on the algorithm of FASTAMP sheet metal forming analysis software designed by Professor Liu Yuqi, State key Laboratory of plastic forming Simulation and Die Technology, Huazhong University of Science and Technology. The other rapid analysis function of sheet metal forming is based on an adaptive rapid prototyping algorithm based on spatial grid Boolean operation. The combination of the two functions provides students with a rich experience of operation. In addition, in order to satisfy the generality of sheet metal forming analysis algorithm, an arbitrary plane polygon triangulation algorithm is designed in this paper. This algorithm takes into account many special cases of planar polygon. On the premise of generating optimal triangular mesh, this algorithm is perfect for two kinds of sheet metal stamping forming algorithms, and has high stability, strong adaptability, and very good real-time and reliability.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG385.1
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