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P.T. Smith, C.T.F. Ross, A.P.F. Little, "Collapse of Carbon-Glass Composite Circular Cylinders under Uniform External Pressure", in B.H.V. Topping, L.F. Costa Neves, R.C. Barros, (Editors), "Proceedings of the Twelfth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 197, 2009. doi:10.4203/ccp.91.197

Keywords: circular cylinder, buckling, axisymmetric yield, composite, external pressure, finite elements, BCLAM, ANSYS.

Summary

This paper describes an experimental and a theoretical investigation into the collapse of 44 circular cylindrical composite tubes under external hydrostatic pressure. The investigations were based on the collapse of fibre reinforced plastic tube specimens made from a mixture of three carbon and two E-glass fibre layers. The lay-up was 0°/90°/0°/90°/0; the carbon fibres were laid lengthwise (0°) and the E-glass fibres circumferentially (90°). The theoretical investigations were carried out using an in-house finite element computer program called BCLAM for the first time, together with the commercial computer package, ANSYS.

The experimental investigations showed that the composite specimens behaved similarly to isotropic materials previously tested, in that the short vessels collapsed through axisymmetric deformation while the longer tubes collapsed through non-symmetric bifurcation buckling. Furthermore it was discovered that the specimens failed at changes of the composite lay-up due to the manufacturing process of these specimens. These changes seemed to be the weak points of the specimens.

The results for BCLAM were disappointing.

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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: 91 PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: B.H.V. Topping, L.F. Costa Neves and R.C. Barros Paper 197 Collapse of Carbon-Glass Composite Circular Cylinders under Uniform External Pressure P.T. Smith, C.T.F. Ross and A.P.F. Little Department of Mechanical and Design Engineering, University of Portsmouth, United Kingdom doi:10.4203/ccp.91.197 purchase the full-text of this paper Full Bibliographic Reference for this paper P.T. Smith, C.T.F. Ross, A.P.F. Little, "Collapse of Carbon-Glass Composite Circular Cylinders under Uniform External Pressure", in B.H.V. Topping, L.F. Costa Neves, R.C. Barros, (Editors), "Proceedings of the Twelfth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 197, 2009. doi:10.4203/ccp.91.197 Keywords: circular cylinder, buckling, axisymmetric yield, composite, external pressure, finite elements, BCLAM, ANSYS. Summary This paper describes an experimental and a theoretical investigation into the collapse of 44 circular cylindrical composite tubes under external hydrostatic pressure. The investigations were based on the collapse of fibre reinforced plastic tube specimens made from a mixture of three carbon and two E-glass fibre layers. The lay-up was 0°/90°/0°/90°/0; the carbon fibres were laid lengthwise (0°) and the E-glass fibres circumferentially (90°). The theoretical investigations were carried out using an in-house finite element computer program called BCLAM for the first time, together with the commercial computer package, ANSYS. The experimental investigations showed that the composite specimens behaved similarly to isotropic materials previously tested, in that the short vessels collapsed through axisymmetric deformation while the longer tubes collapsed through non-symmetric bifurcation buckling. Furthermore it was discovered that the specimens failed at changes of the composite lay-up due to the manufacturing process of these specimens. These changes seemed to be the weak points of the specimens. The results for BCLAM were disappointing. 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 £140 +P&P)
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