Thermal stresses in a Drucker Prager elastoplastic hollow cylinder subjected to thermal shock: influence of material and structure parameters
Résumé
The thermomechanical behavior of a hollow cylinder subjected to a sudden rise of its inner temperature is examined. An elastoplastic linear Drucker-Prager model is identified with data from tensile and compressive tests made on alumina graphite refractories. The role of material non linearity on thermal shock resistance is studied thanks to finite element simulations. It is shown that the energy dissipated plasticity is a more sensitive material parameter for the design of components in comparison to the thermal stresses usually chosen.
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