VIBRATION STUDY INDUCED BY
INTERNAL FLOW IN PIPELINES UNDER DIFFERENT PARAMETERS WITH A NUMERICAL ASPECT
Dahmane M.1, S. Zahaf2, M.
Benkhettab3, M. Soubih4, S.A. Slimane5, D.
LMA, Depart. of Mechanical Engineering, USTO-MB, BP 1055 El Menaour, Oran,
Depart. of Technol., University of Djilali Bounaama-Khamis Meliana, Ain Defla,
Depart. of Mechanical Engineering, Mostaganem University-Abdelhamid Ibn Badis,
Laboratory of Mechanics and Energy, Chlef University Hassiba Benbouali, Chlef,
Depart. of Space Mech. Res., Satellites Devel. Centre, Algerian Space Agency,
In this paper, the natural frequencies of a fluid conveying pipe and critical
velocities are obtained using standard finite element method (FEM). Finite
element beam type with two degrees of freedom per node was used. The natural
frequencies of our system are calculated by using a program developed in MATLAB.
The results are compared with those predicted by the differential transformation
method (DTM), and with other results listed in the literature, where several
examples are studied, for pipes with different boundary conditions:
pinned-pinned and clamped-pinned. We determine the influence of the physical and
geometrical parameters of the proper frequencies and the critical velocity for
fluid conveying pipe to study and analyse instability with its concepts.
Keywords: fluid conveying pipe, foundation, FEM, Matlab, instability