Deployment Analysis of a Deployable Truss Structure

摘要

The deployment of a tetrahedral truss structure with spring driving system is a fast process. A deployment experiment of the tetrahedral truss structure has been designed to study the deployment dynamic characteristics of this tetrahedral truss structure. Using a high-speed camera and a force transducer, we can obtain the spatial positions of the three freedom joints and the impact force of the fixed joint, respectively. For further study the deployment dynamics of this structure, we have provided an analytical model constructed by ADAMS. By using two objective functions, the parameter optimization was performed and the numerical results were compared well with the experimental results. The reliability of the analytical model to analyse this deployable truss structure has been proved. The results provide an analytical model to study the deployment dynamics and provide an insight into the deployment mechanism of this deployable structure.