Model Updating and Analysis of Cable-Strut Deployable Articulated Mast

To analyze the mechanical characteristics of cable-strut deployable articulated mast, its finite element analysis model was established. The first-order bending and torsional vibration frequencies were obtained by modal testing of 6 modules prototype. Based on the experimental results, the finite element model was updated considering uncertain conditions, and the model frequency error is reduced from 1.7% to 0.3%. Based on the updated simulation model, the effects of different module numbers and cable pre-tension on the fundamental frequency are studied. The results indicate that the number of modules is negatively correlated with the fundamental frequency, and the effect of cable pre-tension is positively.