Some new thermo-elastic solutions for cylindrical and spherical composites

In this model, parametric analyses are conducted by varying the Youngࢠs modulus, Poissonࢠs ratio, thermal conductivity and linear thermal expansion coefficient of insulate coating. The analysis shows the maximum Hencky von Misesࢠs equivalent stress in steel phase and in insulate coating. Finally, it is presented a numerical example by considering three types of materials for insulate coating: (1) Expanded Polyurethane; (2) Laminate glass; (3) Syntatic foam. In chapter XXIV it is analyzed a cylindrical concrete specimen under axial force within Fibre Polymeric Reinforcing sheets. The elastic solutions found in Chapter XII are here extended to the post-elastic range. The evolution of the stress field when the core phase is characterized by an Intrinsic Curve or Schleicher-like elastic-plastic response with associate flow rule and the cylindrically orthotropic hollow phase obeys to is shown the elastic-brittle Tsai-Hill anisotropic yield criterion. The choice of these post-elastic behaviours is suggested by experimental evidences reported in literature for these materials, as well as the cylindrical orthotropy of the hollow phase intrinsically yields to consider several perfectly bonded FRP layers as an equivalent one, interpreting their overall mechanical response by invoking the theory of homogenization and the mechanics of composites. At the end, a numerical example application to cylindrical concrete specimens reinforced with Carbon FRP is presented, by furnishing a predictive formula ࢠderived from the previously obtained analytical solutions - for estimating the overall collapse mechanism, the concrete ultimate comp