Structure Dynamics Analysis of Modularized Deep Space Detector

Modularized and standardized concepts of deeps pace detectors are increasing along with the development of deep space exploration technique. Series connection between different sub-modules of deep space detectors are reasonable and popular, and it is a challenge to propose a reasonable dynamic response index for a single sub-module according to the dynamic response index of the overall series-connected structure. Based on the substructure modal synthesis method and the cantilever beam theory, It proposes a method for assigning design index of dynamic response for sub-modules of series-connected structures. The equation of fundamental frequencies of sub-modules are derived analytically based on three consumptions, and the relation between the dynamics of sub-modules and that of overall series-connected structure are discussed. The proposed dynamics index assignment method shows high accuracy and can provide critical instructions for the design of series-connected modularized deep space detectors.