A shape memory alloy adaptive tuned vibration absorber: design and implementation

Rustighi, Emiliano; Brennan, M.J.; Mace, B.R.

doi:10.1088/0964-1726/14/1/002

Cited by 119 publications

(118 citation statements)

References 17 publications

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“…SMA characteristics motivate the concept of an adaptive tuned vibration absorber that is able to change its stiffness depending on temperature [14][15][16][17]. This allows one to attenuate primary system vibration amplitudes not only for one specific forcing frequency, as occurs with the TVA, but also for a broad range of frequencies.…”

Section: Introductionmentioning

confidence: 99%

Dynamical Behavior of a Pseudoelastic Vibration Absorber Using Shape Memory Alloys

Oliveira

Paula

Savi

2017

Shock and Vibration

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The tuned vibration absorber (TVA) provides vibration reduction of a primary system subjected to external excitation. The idea is to increase the number of system degrees of freedom connecting a secondary system to the primary system. This procedure promotes vibration reduction at its design forcing frequency but two new resonance peaks appear introducing critical behaviors that must be avoided. The use of shape memory alloys (SMAs) can improve the performance of the classical TVA establishing an adaptive TVA (ATVA). This paper deals with the nonlinear dynamics of a passive pseudoelastic tuned vibration absorber with an SMA element. In this regard, a single degree of freedom elastic oscillator is used to represent the primary system, while an extra oscillator with an SMA element represents the secondary system. Temperature dependent behavior of the system allows one to change the system response avoiding undesirable responses. Nevertheless, hysteretic behavior introduces complex characteristics to the system dynamics. The influence of the hysteretic behavior due to stress-induced phase transformation is investigated. The ATVA performance is evaluated by analyzing primary system maximum vibration amplitudes for different forcing amplitudes and frequencies. Numerical simulations establish comparisons of the ATVA results with those obtained from the classical TVA. A parametric study is developed showing the best performance conditions and this information can be useful for design purposes.

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Section: Introductionmentioning

confidence: 99%

Dynamical Behavior of a Pseudoelastic Vibration Absorber Using Shape Memory Alloys

Oliveira

Paula

Savi

2017

Shock and Vibration

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“…It is placed within a wider on-going research project [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

On the optimization of a hybrid tuned mass damper for impulse loading

Salvi¹,

Rizzi²,

Rustighi³

et al. 2015

Smart Mater. Struct.

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The present paper deals with the optimisation of a hybrid Tuned Mass Damper (TMD) in reducing the transient structural response due to impulse loading. In particular, a unit impulse excitation has been assumed, acting as base displacement, which is a situation that may occur in different real applications. The proposed hybrid Tuned Mass Damper is composed of a previously optimised passive TMD and an added optimised active controller. Such configuration has been conceived in view of reducing both the global and the peak response. Especially on the latter task, the introduction of the active controller brings in a significant contribution. Prior, a Bounded-Input-Bounded-Output (BIBO) stability analysis on the control gains is developed. Different control laws have been investigated, assuming as primary structures, first a single-degree-of-freedom (SDOF) benchmark system and then a multi-degree-of-freedom (MDOF) building, in order to point out the most appropriate control law for the given structural context. In particular, a new control law, based on a linear combination of acceleration and velocity, allowed for remarkable peak response reduction. The achieved dynamic response exhibits a time settling weakly oscillating response, an indication of a stable behaviour, and therefore represents a suitable option for the active controller, in view of various engineering applications.

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“…Both alternatives indicate SMA elements to be employed to promote vibration reduction in dynamical systems. Several research efforts presented different aspects of SMA applications in dynamical systems that include vibration absorbers and composite structures (Birman, 2008;Elahinia et al, 2005;Nae et al, 2004;Rustighi et al, 2003Rustighi et al, , 2005aRustighi et al, , 2005bSavi et al, 2011;Tiseo et al, 2010;Williams et al, 2001Williams et al, , 2002Williams et al, , 2005.…”

Section: Introductionmentioning

confidence: 99%