Influence of hysteresis loop shape on the nonlinear dynamics of shape memory alloy oscillator excited by non-ideal energy sources
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Data
2014-12-10
Autores
Piccirillo, V.
Tusset, A. M.
Balthazar, J. M. [UNESP]
Bernardini, D.
Rega, G.
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Resumo
The dynamical response of systems with shape memory alloy (SMA) presents a different behavior due to their nonlinear characteristic. SMA nonlinear response is associated with adaptive dissipation related to their hysteretic behavior. This paper discusses the nonlinear responses of shape-memory non-ideal oscillators, based on a thermomechanical consistent model with four state variables. Two cases are investigating, namely, the case when SMA presents a large hysteresis loop and another one with less hysteresis. Computer simulations are carried out via a numerical approach showing qualitative results concerned with regular and non-regular motions.
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non-ideal system, Nonlinear dynamics, shape memory material, thermomechanical coupling
Como citar
AIP Conference Proceedings, v. 1637, p. 804-813.