Integral transform solutions of dynamic response of a clamped–clamped pipe conveying fluid

Analysis of dynamic response of pipe conveying fluid is an important aspect in nuclear power plant design. In the present paper, dynamic response of a clamped–clamped pipe conveying fluid was solved by the generalized integral transform technique (GITT). The governing partial differential equation was transformed into a set of second-order ordinary differential equations which is then numerically solved by making use of the subroutine DIVPAG from IMSL Library. A thorough convergence analysis was performed to yield sets of reference results of the transverse deflection at different time and spanwise position. We found good agreement between the computed natural frequencies at mode 1–3 and those obtained by previous theoretical study. Besides, modal separation analysis was carried out and the influence of mass ratio on deflection and natural frequencies was qualitatively and quantitatively assessed.

► Dynamic response of pipe conveying fluid was studied numerically.
► The generalized integral transform technique (GITT) was applied.
► Numerical solutions with automatic global accuracy control were obtained.
► Excellent convergence behavior was shown.
► Modal separation analysis was carried out and the influence of mass ratio was analyzed.