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| 1 | INFLUENCING PARAMETERS OF FLOW-INDUCED STRUCTURAL DEFORMATION FOR A CIRCULAR TUBE显示文摘Numerical simulations were carried out to study the effects of flow and structural parameters on structural deformation.The curves were obtained to show the structural stress and deformation varying with the flow and structural parameters.Meanwhile,the influence degree of these parameters was investigated by range analysis,and a fitting formula of the parameters and the maximum structural deformation in this model was obtained and thus the most influential parameter on structure safety was found.Results show that there is a great difference in their effect on the structural deformation for these flow and structural parameters.The influence degree of parameters is in a decreasing order for the pipe length,fluid velocity,pipe thickness,fluid density,pipe diameter,elastic modulus,Poisson ratio and fluid viscosity,among which the first four parameters play the major role.Besides,a proper parameter selection based on the influence degree shown in the fitting formula can provide an effective control of the structural deformation. | JIANG Bo TIAN Mao-cheng ZHANG Guan-min LI Bao-xing CHENG Lin | 2009 | Journal of Hydrodynamics2009，21，4： | 2 |
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