New closed-form thermoelastostatic Green function and Poisson-type integral formula for a quarter-plane

Abstract : A new Green's function and a new Poisson-type integral formula for a boundary value problem (BVP) in thermoelastostatics for a quarter-plane subject by mixed homogeneous mechanical boundary conditions are derived in this paper. The thermoelastic displacements are generated by a heat source, applied in the inner points of the quarter-plane and by temperature, prescribed on its boundary semi-straight-lines. All results, obtained in terms of elementary functions, are formulated in a special theorem. The first difficulty to obtain these results is in deriving the functions of influence of a unit concentrated force onto elastic volume dilatation Theta((k)). The second difficulty is in calculating a volume integral of the product of function Theta((k)) and Green's function G in heat conduction. A closed-form solution for a particular BVP of thermoelastostatics for a quarter-plane also is included. Using the proposed approach, it is possible to extend the obtained results not only for any canonical Cartesian domain, but also for any canonical orthogonal one.
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V. Seremet, Guy Bonnet. New closed-form thermoelastostatic Green function and Poisson-type integral formula for a quarter-plane. Mathematical and Computer Modelling, Elsevier, 2011, 53 (1-2), pp.347-358. ⟨10.1016/j.mcm.2010.09.001⟩. ⟨hal-00688135⟩

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