Form-state Design of Deployable Antenna with Cable Membrane Reflector
In order to study the influence of the tension state of metal reflective net and cable net on the shape accuracy of deployable antenna,the form-state design of deployable antenna with cable membrane reflector is studied considering the deformation of support truss.Metal reflective net can be regarded as a kind of membrane structure,and both metal reflective net and cable net need to apply pretension to achieve a certain stiffness.Therefore,firstly the form-state design is carried out based on the force density equation of cable membrane structure to make it meet the requirement of the shape and accuracy under its own pretension and external load.The tension of cable membrane structure will lead to truss deformation,and after rebalancing,resulting in the reduction of shape accuracy of cable membrane reflector and unreasonable tension distribution.Therefore,it is necessary to establish the nonlinear finite element model for the whole antenna.By iteratively modifying the antenna model,the tension design variables and configuration of deployable antenna are obtained.The present method is programmed for a corresponding example at last,and the results indicate that the method is feasible.
deployable antenna with cable membrane reflectorforce density equationnonlinear finite element modelmembraneform-state design
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维普
