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Wind and Structures
  Volume 3, Number 2, June 2000 , pages 083-96

Response of fiber reinforced plastic chimneys to wind loads
A.S. Awad, A.A. El Damatty and B.J. Vickery(Canada)

    Due to their high corrosion and chemical resistance, fiber reinforced plastics (FRP) arernbecoming widely used as the main structural material for industrial chimneys. However, no national coderncurrently exists for the design of such type of chimneys. The purpose of this study is to investigaternanalytically the response of FRP chimneys to wind loads. The classical lamination theory is used tornsubstitute the angle-ply laminate of a FRP chimney with an equivalent orthotropic material that providesrnthe same stiffness. Dynamic wind loads are applied to the equivalent chimney to evaluate its response tornboth along and across wind loads. A parametric study is then conducted to identify the material andrngeometric parameters affecting the response of FRP chimneys to wind loads. Unlike the across-windrnresponse, the along-wind tip deflection is found to be highly dependent on the angle of orientation of thernfibers. In general, the analysis shows that FRP chimneys are very vulnerable to across-wind oscillationsrnresulting from the vortex shedding phenomenon.
Key Words
    fiber reinforced plastics; chimneys; laminated; wind loads; vortex shedding; dynamic.
A.S. Awad, Mccavour Eng. Ltd. Mississauga, Ontario, CanadarnA.A. El Damatty and B.J. Vickery, Department of Civil and Environmental Engineering, The University of Western Ontario, London, Ontario, N6A 5B9 Canada

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