公开(公告)号：US20020123812A1

公开(公告)日：2002-09-05

申请号：US09888055

申请日：2001-06-21

Applicant: Washington State University Research Foundation.

Inventor： Sankar Jayaram ,  Uma Jayaram ,  Yong Wang ,  Hrishikesh Tirumali ,  Hiral Chandrana ,  Hugh Ingram Connacher ,  Kevin Lyons ,  Peter Fred Hart

IPC: G06F019/00 ,  G06K009/00 ,  G06T015/00 ,  G06T017/00 ,  G03B021/60 ,  G06T013/00 ,  G06T015/70

CPC classification number: G06T19/20 ,  G06T2210/21 ,  G06T2219/2004 ,  G06T2219/2008

Abstract: A virtual assembly design environment that simulates axial and planar constrained motion for multiple parts in any combination and application order. Dynamic simulation methods are used to simulate object behavior in the design environment using physical laws and collision detection algorithms. The physical properties, e.g., mass properties, of parts in an assembly are created in a separate CAD system. In one embodiment, physical property information is transferred from the CAD system to the virtual reality environment where it is used in dynamic simulations. The parts behave realistically in a user's hand, constrained on the base part, or moving freely in space. A swept volume can be generated directly in the CAD system. Real-time bi-directional data transfer between a VR environment and the CAD system is also provided. As a result, the user can perform parametric design modifications in the virtual environment by the use of a CAD system.

Abstract translation: 虚拟装配设计环境，以任何组合和应用顺序模拟多个零件的轴向和平面约束运动。 动态仿真方法用于使用物理定律和碰撞检测算法来模拟设计环境中的对象行为。 组件中部件的物理性质，例如质量特性是在单独的CAD系统中产生的。 在一个实施例中，物理属性信息从CAD系统传送到在动态模拟中使用的虚拟现实环境。 这些部件在用户手中实际操作，限制在基部上，或在空间中自由移动。 扫描体积可以直接在CAD系统中生成。 还提供了VR环境和CAD系统之间的实时双向数据传输。 因此，用户可以通过使用CAD系统在虚拟环境中执行参数设计修改。