虚拟冲压线, 数字样机, 运动仿真, 建模

Due to the virtual stamping production line system of automobile panels with large-scale assembly model, the modeling method based on one-level assembly relation and assembly skeleton model was proposed in order to improve the real time abilities of interoperating kinematics simulation for huge data digital mock-up under virtual environment. Assembly model was generated by motion skeleton model and sub-assembly model, which was composed of solid model or polygonal representation and its assembly skeleton model. In order to avoid repeat restriction and the complex solution of kinematics simulation, those components with relative motion in the assembly model needed to be parts or products of only one level assembly relation, i.e. “one-level”assembly method. Assembly skeleton model was obtained by restructuring the assembly reference of parts and reflect them on the virtual models in order to make models become parameterized and automated. Motion skeleton model described the motion relation of parts or products by motion pairs. From practical application, this modeling method is approved validated.