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Vol.20, No.3, 2020, pp. 319–327 |
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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. Boutchicha1 1) LMA, Depart. of Mechanical Engineering, USTO-MB, BP 1055 El Menaour, Oran, ALGERIA 2) Depart. of Technol., University of Djilali Bounaama-Khamis Meliana, Ain Defla, ALGERIA email: manojsahani117@gmail.com ; mehtaparths@gmail.com 3) Depart. of Mechanical Engineering, Mostaganem University-Abdelhamid Ibn Badis, ALGERIA 4) Laboratory of Mechanics and Energy, Chlef University Hassiba Benbouali, Chlef, ALGERIA 5) Depart. of Space Mech. Res., Satellites Devel. Centre, Algerian Space Agency, Oran, ALGERIA
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Abstract 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 |
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