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| Dynamic analysis of membrane structures interacting with air |
| Revised:September 10, 2004 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20064089 |
| KeyWord:membrane structures,added air mass,radiation damping,air-structure coupling,dynamic analysis |
| LI Qing-xiang SUN Bing-nan GU Zheng-wei |
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| Abstract: |
| Air is assumed as compressible,inviscid and potential,nonlinear stiffness matrix and coupling aerodynamic expression have been deduced.According to the mechanical characteristic of membrane structures,coupling kinetic equation of the air-structures interaction is established.Infinite air medium is simplified as finite domain through finite element method,and the coupling finite element model of membrane and air domain is derived.The added air mass and radiation damping of the air surrounding the membrane structures are simulated.And then,the free and forced harmonic vibration problems considering the geometrical nonlinear it of the membrane structures,have been studied in the present paper.Meanwhile,the factors which affect dynamic responses of the membrane structures in air fluid are discussed. |
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