The nonlinear equations for planar motions of a vertical cantilevered pipe conveying fluid are modified to take into account a small lumped mass added at the free end. The resultant equations contain nonlinear inertial terms; by discretizing the system first and inverting the inertia matrix, these terms are transferred into other matrices. In this paper, the dynamics of the system is examined when the added mass is negative (a mass defect), by means of numerical computations and by the software package AUTO. The system loses stability by a Hopf bifurcation, and the resultant limit cycle undergoes pitchfork and period-doubling bifurcations. Subsequently, as shown by the computation of Floquet multipliers, a type I intermittency route to chaos is followed—as illustrated further by a Lorenz return map, revealing the well-known normal form for this type of bifurcation. The period between “turbulent bursts” of nonperiodic oscillations is computed numerically, as well as Lyapunov exponents. Remarkable qualitative agreement, in both cases, is obtained with analytical results.
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December 1995
Technical Papers
Intermittency Route to Chaos of a Cantilevered Pipe Conveying Fluid With a Mass Defect at the Free End
C. Semler,
C. Semler
Department of Mechanical Engineering, McGill University, 817 Sherbrooke Street West, Montre´al, Que´bec, H3A 2K6, Canada
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M. P. Pai¨doussis
M. P. Pai¨doussis
Department of Mechanical Engineering, McGill University, 817 Sherbrooke Street West, Montre´al, Que´bec, H3A 2K6, Canada
Search for other works by this author on:
C. Semler
Department of Mechanical Engineering, McGill University, 817 Sherbrooke Street West, Montre´al, Que´bec, H3A 2K6, Canada
M. P. Pai¨doussis
Department of Mechanical Engineering, McGill University, 817 Sherbrooke Street West, Montre´al, Que´bec, H3A 2K6, Canada
J. Appl. Mech. Dec 1995, 62(4): 903-907 (5 pages)
Published Online: December 1, 1995
Article history
Received:
July 19, 1993
Revised:
October 31, 1994
Online:
October 30, 2007
Citation
Semler, C., and Pai¨doussis, M. P. (December 1, 1995). "Intermittency Route to Chaos of a Cantilevered Pipe Conveying Fluid With a Mass Defect at the Free End." ASME. J. Appl. Mech. December 1995; 62(4): 903–907. https://doi.org/10.1115/1.2896019
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