Scientia Iranica

Scientia Iranica

Investigating the Effects of Ionic Polymer Metal Composite Patches on Aeroelastic Characteristics of a Cantilever Wing in Supersonic Flow

Authors
Shahab Jamshidi
Morteza Dardel
Mohammad Hadi Pashaei
Department of mechanical engineering, Babol Noshirvani University of Technology, 47148-71167, Babol, Iran
10.24200/sci.2016.3845
Abstract
This work presents energy harvesting from limit cycle oscillation of low aspect ratio rectangular cantilever wings in supersonic flow. The wing is modeled in according to classical plate theory with Von-Karman strain-displacement relations for modeling large deflections due to mid plane stretching. The aerodynamic pressure is evaluated based on the quasi-steady first-order piston theory. Linear and nonlinear aeroelastic characteristics of the considered model are accurately examined and the effects of ionic polymer metal composite (IPMC) energy harvesting on flutter margin and limit cycle oscillation amplitudes are investigated. It is shown that position of IPMC on the wing has a great effect on the amount of harvested power. Since IPMC induces a high level of strain, it produces static deflection of wing. This static deflection produces stiffness hardening of the entire system, and accordingly can greatly reduce the amplitude of limit cycle oscillation. Obtained results show that IPMC actuator has more influence on limit cycle oscillation of wing, while its effect on flutter instability is negligible.
Keywords
energy harvesting
IPMC
flutter
limit cycle
supersonic flow
Scientia Iranica
Volume 23, Issue 2 - Serial Number 2
Transactions on Mechanical Engineering (B)
April 2016
Pages 575-587

  • Receive Date 25 May 2015
  • Accept Date 27 July 2017