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Castelo Ferreira, Pedro

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  • A Computer Simulation of the Nitinol Thermal Expansion under Fast Varying Working Conditions
    Publication . Ferreira, P. Castelo; Pascoal-Faria, P.; Carreira, P.; Alves, N.
    We discuss the setup of a simulation on ANSYS to predict the thermal expansion of parts made of Nitinol. A simulation is justified for working conditions in which the part heating is not ho-mogeneous originating a temperature gradient across the part section such that an analytical estimate for the part expansion cannot be calculated. We apply the simulation to the topological optimization of a square section geometry and a bullet geometry for water assisted injection molding. For the topo-logical optimization we consider as parameter the wall thickness and consider both the cases of fast varying temperature and fast varying temperature and pressure.