In this paper, using Hamilton principle, the control equation of fluid-structure interaction vibration of a pipe conveying fluid under simple harmonic excitation was established and a novel method, Galerkin-Modality＇...In this paper, using Hamilton principle, the control equation of fluid-structure interaction vibration of a pipe conveying fluid under simple harmonic excitation was established and a novel method, Galerkin-Modality＇ s method was proposed to solve this equation. The influence of the damp, the flow velocity, the pressure and the length of the pipe supported by simple supports on the piping＇ s first two natural frequencies was discussed. The criti- cal pressure and the critical length of the pipe were obtained. The influence of the flow velocity and pressure on the piping＇s maximal relative displacements were analyzed.展开更多
基金supported by National High Technology Research and Development Program of China Under Grant No.2007AA04Z404Natural Science Basic Research Plan in Shaanxi Province of China Under Grant No.SJ08A17+1 种基金Technical Innovation Foundation of Northwestern Polytechnical University(NWPU) Under Grant No.2008KJ02019the "111" Project of NWPU Under Grant No.B07050
文摘In this paper, using Hamilton principle, the control equation of fluid-structure interaction vibration of a pipe conveying fluid under simple harmonic excitation was established and a novel method, Galerkin-Modality＇ s method was proposed to solve this equation. The influence of the damp, the flow velocity, the pressure and the length of the pipe supported by simple supports on the piping＇ s first two natural frequencies was discussed. The criti- cal pressure and the critical length of the pipe were obtained. The influence of the flow velocity and pressure on the piping＇s maximal relative displacements were analyzed.
