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Wind and Structures Volume 19, Number 1, July 2014 , pages 35-58 DOI: https://doi.org/10.12989/was.2014.19.1.035 |
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A numerical solution to fluid-structure interaction of membrane structures under wind action |
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Fang-jin Sun and Ming Gu
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| Abstract | ||
| A numerical simultaneous solution involving a linear elastic model was applied to study the fluid-structure interaction (FSI) of membrane structures under wind actions, i.e., formulating the fluid-structure system with a single equation system and solving it simultaneously. The linear elastic model was applied to managing the data transfer at the fluid and structure interface. The monolithic equation of the FSI system was formulated by means of variational forms of equations for the fluid, structure and linear elastic model, and was solved by the Newton-Raphson method. Computation procedures of the proposed simultaneous solution are presented. It was applied to computation of flow around an elastic cylinder and a typical FSI problem to verify the validity and accuracy of the method. Then fluid-structure interaction analyses of a saddle membrane structure under wind actions for three typical cases were performed with the method. Wind pressure, wind-induced responses, displacement power spectra, aerodynamic damping and added mass of the membrane structure were computed and analyzed. | ||
| Key Words | ||
| membrane structures; vibration under wind actions; fluid-structure interaction; numerical simultaneous solution | ||
| Address | ||
| Fang-jin Sun:College of Civil Engineering and Architecture, Liaoning Technical University, Fuxin, Liaoning, 123000, China; State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China Ming Gu: State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China | ||