Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
Design and experimental tests of a Smart Pitch Link with Shape Memory Alloy to vibration reduction in helicopters
Submission Author:
Andersson Oliveira , PB , Brazil
Co-Authors:
Andersson Oliveira, MARCELO CAVALCANTI RODRIGUES, Antonio Almeida Silva
Presenter: Andersson Oliveira
doi://10.26678/ABCM.DINAME2023.DIN2023-0168
Abstract
Devices to control vibration in helicopters employs since passive to active strategies using common engineering materials, but might have improved by using of shape memory alloys as superelastic material. About helicopters, the vibration suppression is a goal pursued in all the projects, which represents a technological challenge, mainly when acting in rotating parts. One of requirements in this type of application is the developing of systems with low weight addition. Aligning the successfully applications in vibration suppression and the low weight, a superelastic material, Shape Memory Alloys (SMA) represents a properly candidate as a vibration absorber in rotating parts. The SMA take advantage from the superelastic behavior that dissipate energy due to a solid-state phase transformation. Thus, this paper presents a SMA device (Superelastic Pitch Link), developed and tested in bench to be designed as a mechanism towards vibration suppression in helicopter blades. The experimental results demonstrate, in comparative analysis, the hysteretic behavior of an 11g device and energy dissipation until 0.26
Keywords
helicopter vibration supression, Shape Memory Alloy, Superelasticity, Smart pitch link
