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Matlab® algorithm to simulate the dynamic behavior of an NiTi alloy through Ansys® APDLTM models
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Orientador(es)
Resumo(s)
In recent years, technological advances related with the so-called intelligent materials
have been exploited for problem solving in many engineering fields. In this regard,
shape memory alloys (SMA) seem suitable for medical and engineering applications
and many others. These alloys have the ability to return to the original form after an
apparently plastic deformation by applying heat and the also ability to perform phase
changes with voltage variations under a specific temperature. These properties allow
the development of a hysteretic loop with energy dissipation, which can be used as
a damping element in a vibratory system. In this paper, a MATLAB algorithm was
developed to create an interface with the Ansys® APDLTM software that simulate the
dynamic behavior of a SMA. The software is capable to obtain the cyclical behavior of
a vibratory mechanical system based on the energy dissipation properties of the SMA.
The results show that the free vibration of a mass-damper (alloy) system presents the
energy dissipation related in magnitude with the area of the hysteresis loop until the
deformation caused by the motion which does not correspond to a voltage required to
initiate the (direct) phase transformation of the material, thus reducing the displacement
to a constant level.
Descrição
Palavras-chave
SMA ANSYS APDLTM Matlab
Contexto Educativo
Citação
Hilário, Jean; Braz-César, M.T.; Andrade, C.A.R.; Borges, Adailton (2020). Matlab® algorithm to simulate the dynamic behavior of an NiTi alloy through Ansys® APDLTM models. In International Congress on Engineering — Engineering for Evolution. Covilhã, Portugal