虚拟折弯机及板料动态柔体仿真的研究与实现  

Research and implementation of virtual scene for press brake and dynamic flexible sheet metal simulation

作　　者：彭良友[1] 张李超[1] 赵祖烨[1] 李敏[1] 周强[1] 

机构地区：[1]华中科技大学塑性成形模拟及模具技术国家重点实验室,湖北武汉430074

出　　处：《锻压技术》2011年第1期82-87,共6页Forging & Stamping Technology

摘　　要：研究并实现了一种基于虚拟现实的动态虚拟折弯机场景仿真系统。采用OpenGL构建图形控制平台实现立体三维效果;基于场景图形技术和参数化拉伸体建模构建和组织各种尺寸的场景元素;建立动画管理器对场景元素进行更新遍历实现运动序列控制;同时,应用变形体技术,完成工艺流程和板料柔体仿真,并且通过板料展开计算实现其长度变化。应用分析表明,该系统可提高折弯场景运动控制和工艺成形的真实感,并可扩展应用于板料成形的其他领域。A simulation system of dynamic virtual scene of press brake based on virtual reality was investigated and implemented.In the system,the graphics platform with stereo 3D effects was established by using OpenGL.The virtual scene of press brake was built based on scene graph and extrude model techniques for organizing and modifying it easily.The control strategy was completed by building the animation manager to update the scene graph.Simultaneously,flexible simulation of sheet metal and bending process were achieved by morph target animation technology and the length of board can transform in the bending process.The application shows that the developed system can make the virtual scene more realistic and be used in other fields of sheet metal widely.

关 键 词：折弯机 柔体板料 虚拟现实 场景图形 拉伸体 

分 类 号：TG386[金属学及工艺—金属压力加工]