Overall Damping Technology Research On The Composite Instrument Mounting Plate Of A Spacecraft

According to the overall vibration damping development of the composite instrumentmounting plate in a aircraft and basing on the domestic and international vibration damping andvibration isolation technology, this paper completed the whole design processes of the rubberdamping design transition to the metal materials damping design after research and test on theplate. The composite instrument mounting plate integrated a variety of payloads and singlemachines. In order to maximizing the stiffness quality ratio of its structure, we designed it forcomposite honeycomb plate. After designing in programs under the constraints, selectingdamping materials based on part of test data, FEA of the preliminary design parameters, givingmore optimized design results through comparative analysis, designing appropriate test programsand test verification, finally, we formed the whole damping program of composite mountingplate. Also, we formed the whole damping design and test technology. This paper focuses on theeffect of axial overload dynamic characteristics on the mounting plate and gets the dampingprograms and parameters to meet design requirements.The research work as the following four parts:(1)Developing viable development routes based on the development background of thedamping structure;(2)After referring to the mechanical basic properties of the material and adopt stiffnessequivalent methods, we established the finite element model of the composite honeycomb platewhich meet the requirements of engineering simulation.(3)According to preliminary calculations, the program is designed. Using of designparameters for FEA model gives the optimum design program. Through the analysis, design andtest verification of rubber material damping structure, with comparison and analysis of finiteelement results, we got the optimization parameters.(4)By the optimization results based on theoretical analysis and test verification of therubber shock pad, the metal material damping structure was designed and test verification waspassed.