ANALYSIS OF STIFFNESS OF SUSPENDED FEED SYSTEM FOR LARGE RADIO TELESCOPE

Abstract

Abstract: Considering the special structure for the large radio telescope (LT) with large span flexible cable, the stationary stiffness of the cable-suspended-feed system is studied. The nonlinear equilibrium of the cable-cabin system first is derived with respect to the moving cabin’s position variables. The stationary stiffness formulation is obtained based on geometrical nonlinear between the stiffness and tension of cable. Then the formulation is applied to analyses vibration of the cabin. A comparison simulation and practical experiment results of LT 50 m model show the validity of the formulation. Additional, the relation of the cable tension and stiffness of the feed system for LT 50 m model is obtained .

Key words: Large radio telescope, Suspended feed structure Stiffness matrix, Boundary element method, Insertion loss, Noise barrier, Sound source model, High-speed railway

CLC Number:

TH751 O328

BAO Hong;DU Jingli;DUAN Baoyan. ANALYSIS OF STIFFNESS OF SUSPENDED FEED SYSTEM FOR LARGE RADIO TELESCOPE[J]. , 2006, 42(7): 119-125.

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ANALYSIS OF STIFFNESS OF SUSPENDED FEED SYSTEM FOR LARGE RADIO TELESCOPE

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