Modelowanie zjawisk mechanicznych i cieplnych występujących podczas spiekania w toroidalnych kowadłach Bridgmana*

STRESZCZENIE: Przedstawiono główne założenia, pozwalające na modelowy opis zagadnień mechanicznych i cieplnych występujących podczas spiekania z użyciem toroidalnych kowadeł Bridgmana. Na ich podstawie skonstruowano modele obliczeniowe, w których wykorzystano rzeczywistą geometrię kowadeł i wszystkich części składowych istotnych dla modelowanego procesu. Obliczenia wykonano metodą elementów skończonych, z zastosowaniem komercyjnego środowiska obliczeniowego ANSYS. Uzyskane wyniki porównano z wartościami zarejestrowanymi podczas pomiarów kontrolnych, co pozwoliło na potwierdzenie słuszności przedstawionych założeń w obszarze zjawisk cieplnych.

SŁOWA KLUCZOWE: toroidalne kowadło Bridgmana, metoda elementów skończonych, spiekanie.

ABSTRACT: The paper presents basic requirements providing for exemplary description of mechanical and thermal issues that occur during sintering operation in the Bridgman-type toroidal anvils. To meet these requirements, calculation models were developed, where actual geometry of the anvil and all components relevant to the modeled process were applied. The calculations were carried out to the finite element method using ANSYS commercial computing environment. Simulation results were compared with the values collected during control measurements, which confirmed the presented requirements in relation to the thermal phenomena scope.

KEYWORDS: Bridgman-type toroidal anvil, finite element method, sintering.

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DOI: http://dx.doi.org/10.17814/mechanik.2015.3.101