It simulates the parts assemble in assemble tree through setting up assemble simulation system, gets assemble process plan, shortens the periods of new products exploitation development.

Simulation results show that the proposed algorithm can greatly reduce the routing decision errors of the source nodes due to inaccurate topology information, and improve network performance.

In order to make human motion simulation more realistic in Virtual Reality on PC platform, this paper introduces an improved method of modeling human body as a tree with constraint joints.