Application of a Shape Memory Absorber in Vibration Suppression

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Abstract:

The dynamic response of structures subjected to high-amplitude vibration is often dangerous and undesirable. Dynamic vibration absorbers (DVA) have received special attention in recent years due to vibration attenuation offered by them. Thus, the present study analyzes the nonlinear dynamics of a system with a dynamic vibration absorber (DVA) using a shape memory material (SMM) whose characteristics are highly dependent upon temperature. The restoring force of the oscillator is provided by a shape-memory device (SMD) described by a thermomechanical model capable to describe the hysteretic behavior via the evolution of a suitable internal variable. Numerical simulations show the effectiveness of using the SMM in reducing oscillations of a harmonic oscillator.

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27-35

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August 2016

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