Design And Model Building For Viscoelastic Damper Based On Finite Element Analysis

The low-frequencies vibration mode of the large solar panels has a greatinfluence on the control precision of the satellite body attitude. It’s difficult toself attenuate in the environment of space, so it is very necessary to take thevibration control of a large coiled components of the satellite. Viscoelasticdamper using the shear deformation of the viscoelastic material, turning themechanical energy into the heat dissipation, it belongs to one of the passivecontrols. This paper is aimed at the low-frequencies vibration mode of large solarpanels in space, designed the viscoelastic dampers which installed in the solarpanel bracket, and it optimally designed the damper structure based on the resultsof finite element analysis, and then make a research on how to build the model ofthe damper.In chapter2, this paper firstly discusses the requirements of various keydesign index of the damper, the basic configuration of the damper is designed.And then chooses the structure material of the damper and the damping materials.Based on the finite element analysis, according to the test results of complexstiffness, the optimization design of the various structure parameters of thedamper is completed.In chapter3, based on the finite element analysis, this paper introduced thethe various structure performance parameters testing in the designed damperconfiguration. Including the modal analysis of structure of the solar panels withdamper, the transient dynamics analysis, buckling analysis of structures andimpact resistance analysis, it verifies that the optimization design of the damperhave the need reliability and the corresponding performance indexes.Finally, in chapter4, the temperature model of damper is built. Because thedamper performance which determined the structure parameters depends on theperformance index of viscoelastic damping material, and the performance indexof the nonlinear viscoelastic damping material depends on the temperaturecontrol, so the establishment of temperature model of damper is designed to meetthe needs of practical engineering. This paper uses the method of parametersfitting, builds a damper complex frequency domain model with temperaturevariable.