Vibration suppression of large space truss structure

Multi-function and high-power are the trends of modern spacecraft, of which structures have the characteristics of large size, weak stiffness and low damping, such as the large space truss structure. When these structures working on the orbit are disturbed, vibration with low frequency and high amplitude is easily stirred. Because of its low damping character, the vibration is difficult to self-attenuation, and will obstruct the normal operation of the spacecraft if there is not control. The traditional structural finite element method is usually complex and inefficient, and it even makes matters worse that the element size doesn't match with the vibration wavelength. Therefore, for the purpose of simplifying the damping configuration of large space truss structure, this article adopts the energy finite element analysis method to study the ability of dampers which absorb and dissipate vibration energy in different locations, and optimizes the configuration with the dissipation energy factor.