Computation And Characteristic Analysis Of Power Flow For Pipes Conveying Fluid Forced Vibration

Application of fluid-conveying pipe systems in engineering is very wide,it can be used not only in submarine,but also in airplane,pipe system,ocean engineering and other fields, basing on transfer matrix method and damped numberical integration, the author researches the forced vibration power flow performance of fluid-conveying pipe in this paper.In the paper, the field transfer matrixes of fluid-conveying straight pipe's transverse, axial and torsional vibrations are derived based on beam model, and then the author discusses the solutions of common components and boundary conditions, including elastic support, concentrated mass, external load and elbow. During the estabilishment of transfer matrix, friction coupling of pipe and fluid, Possion coupling and link coupling are mainly considered.To a fluid-filled shell and fluid-loaded shell,the forced vibration in the shell-fluid coupled system are investigated.The effect of velocity and hydrostatic pressure of the fluid is considered.The form of the vibrational power flow in difference frequncy is mainly cansidered,it is made for controling vibration and noise.