Dynamic Analysis For Scissor Deployable Flexible Truss Structures With Damping

The research to Space Truss Structure is used to identify kinetic factors of the structure, in order to improve the kinetic stability of the structure, and therefore has a greater significance. Based on the absolute nodal coordinate method, this paper carries out some related research.First, this paper introduces the absolute nodal coordinate method, and conducts the dynamics theory of the flexible beam element. With Matlab, this paper uses the above theory to analyze the dynamics process of the flexible beam with a slider, and verifies the effectiveness of the absolute nodal coordinate method.Secondly, based on the theory of damping, this paper gives damping model in absolute nodal coordinate method and some theoretical constraints and constraint equations, and uses Matlab to analyze the dynamic process of the four rectangular beam structure by programming. At the same time, this paper analyzes the influence of damping on the structure.Finally, this paper discusses three-dimensional deployable structures with damping, which indicates three-dimensional structure has some new features different from the planar structure. Due to the interaction between the beam system, the constraint increases the rigidity of the overall structure. Therefore, the local vibration is more severe, and the structure expands slowly. This paper also considers the effect of damping. It limits the structure vibration of local positions, which makes the change of speed and acceleration is more smooth, and enhances the kinetic stability of the structure.