Dynamic Analysis Of Space Precise Deployable Mechanism Based On Virtual Prototyping

Space deployable mechanism has been used widely with the development of astronautics, The study on space deployable mechanism has also become a hot topic.This paper mainly discusses the dynamic analysis of space precise deployable mechanism based on virtual prototyping technology, which provides useful reference to study space deployable mechanism more deeply.The paper discusses importance of space deployable mechanism digit simulation firstly, constructs actuality of study simulation in the world, emphatically discuss the ADAMS's multibody dynamics fundamental theories, thereinto consists of regerence frame's definition and non-linear equation's foundation and arithmetic of calculating non-linear equation.Rigid multibody dynamic model of space precise deployable mechanism is established based on virtual prototyping technology, and the dynamic characteristic of above model is obtained. The effects of impact in joint and trace of sideward panels are analysed by giving different drive moment.Flexible multibody dynamic model of space deployable mechanism is estabished by component mode synthesis, based on virtual prototyping technology. The principle of mode selection and orthogonalization is discussed, and also the generation of Craig-Bampton mode set is given. Finally two flexible models are compared with each other. The effects of dynamic character about deployable mechanism'flexibility must be considered, for sideward panels are builted with light weight. large size and high precision component. However, The deformation of sideward panels with backside frames is small compared with above model, so the effects of sideward panels with backside frames'flexibility on the system can be neglected.