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Keywords: tensile instability, divergence, flutter, displacement discontinuity, elastic slider, singularities.

Summary

Instability caused by tensile axial loads acting on beams, for highly shear deformable beams and for beam-columns in the presence of a single structural junction allowing transversal deflection discontinuities, has been highlighted in a very few papers in the literature

This paper is a contribution to the knowledge of dynamic instability arising from tensile loads of a beam-column in the presence of an arbitrary number of internal sliders endowed with translational elastic springs. First, closed form expressions of the eigen-modes and the characteristic equation under the action of axial forces, for different boundary conditions, are presented. Furthermore, besides the case of conservative tensile dead load, a non conservative axial load of the Beck type has been also considered and the following relevant question is asked: Can a beam-column undergo tensile flutter instability?

While tensile axial loads with conservative character induce divergence type instability, this paper shows that a cantilever beam-column, under a non conservative tensile load only, undergoes flutter instability, as well as under compressive loads, when transversal displacement discontinuities along the span are allowed. A comprehensive parametric analysis is conducted.

Finally, the contemporary presence of conservative and non conservative loads is investigated to study the reciprocal influence. Ranges where the structure switches from divergence to flutter instability, both in tension and in compression, are predicted and discussed in detail.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 108 PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping Paper 103 Advances in Dynamic Instability of Beams subjected to Tensile Loading S. Caddemi, I. Caliò and F. Cannizzaro Dipartimento Ingegneria Civile e Architettura, University of Catania, Italy doi:10.4203/ccp.108.103 purchase the full-text of this paper Full Bibliographic Reference for this paper , "Advances in Dynamic Instability of Beams subjected to Tensile Loading", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 103, 2015. doi:10.4203/ccp.108.103 Keywords: tensile instability, divergence, flutter, displacement discontinuity, elastic slider, singularities. Summary Instability caused by tensile axial loads acting on beams, for highly shear deformable beams and for beam-columns in the presence of a single structural junction allowing transversal deflection discontinuities, has been highlighted in a very few papers in the literature This paper is a contribution to the knowledge of dynamic instability arising from tensile loads of a beam-column in the presence of an arbitrary number of internal sliders endowed with translational elastic springs. First, closed form expressions of the eigen-modes and the characteristic equation under the action of axial forces, for different boundary conditions, are presented. Furthermore, besides the case of conservative tensile dead load, a non conservative axial load of the Beck type has been also considered and the following relevant question is asked: Can a beam-column undergo tensile flutter instability? While tensile axial loads with conservative character induce divergence type instability, this paper shows that a cantilever beam-column, under a non conservative tensile load only, undergoes flutter instability, as well as under compressive loads, when transversal displacement discontinuities along the span are allowed. A comprehensive parametric analysis is conducted. Finally, the contemporary presence of conservative and non conservative loads is investigated to study the reciprocal influence. Ranges where the structure switches from divergence to flutter instability, both in tension and in compression, are predicted and discussed in detail. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £75 +P&P)
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