Thermoelastic Stresses in FG-Cylinders

摘要: FGM components are generally constructed to sustain elevated temperatures and severe temperature gradients. Low thermal conductivity, low coefficient of expansion core ductility have enabled the material withstand higher gradients for a given heat flux. Examples structures undergo extremely high plasma facing materials, propulsion system planes, cutting tools, engine exhaust liners, aerospace skin structures, incinerator linings, barrier coatings turbine blades, resistant tiles, directional flux materials. Continuously varying volume fraction mixture in materials eliminates interface problems mitigating stress concentrations causes more smooth distribution. Extensive studies made by Noda reveal that weakness fiber reinforced laminated composite such as delamination, huge residual stress, locally large plastic deformations, may be avoided or reduced (Noda, 1991). Tanigawa presented an extensive review covered wide range topics from thermo-elastic thermo-inelastic problems. He compiled comprehensive list papers on analytical models behavior (Tanigawa, 1995). The solution stresses one-dimensional case spheres cylinders Lutz Zimmerman (Lutz & Zimmerman, 1996 1999). These authors consider non-homogeneous properties linear functions radius. Obata thick hollow cylinder, under two-dimensional transient distribution, (Obata et al., Sutradhar Laplace transform Galerkin BEM 3-D conduction analysis using Green's function approach where exponential law FGMs was used (Sutradhar 2002). Kim studied unsteady-state circular method (Kim Noda, Reddy co-workers carried out theoretical well finite element analyses thermo-mechanical cylinders, plates shells. Geometric non-linearity effect coupling item considered different loading conditions (Praveen Reddy, 1998, Chin, Paraveen 1999, 2000, Cheng, 2001). Shao Wang cylindrical panels with assumption followed simple laws, e.g., law,