Aeroelastic characteristics of cantilever wing with embedded shape memory alloys

In this paper, the effect of embedded shape memory alloy (SMA) wires on the natural frequency, flutter, limit cycle oscillation (LCO) amplitude and aeroelastic stability margin of a rectangular cantilever wing are investigated. Wings are modeled in accordance to classical plate theory (CPT) as well as first-order shear deformation plate theory (FSDT) and large deflection Von Karman plate theory. The effects of pre-strain, temperature and number of SMA wires on aeroelastic characteristics are considered. Significant improvements in aeroelastic behaviors due to the in-plane load of the SMA wires are obtained.

► Effects of embedded SMA wires on the natural frequency of wing are considered. ► LCO amplitude and flutter margin of a rectangular wing with SMA wires are obtained. ► Effects of layout of SMA wires on the aeroelastic characteristics are considered. ► Significant improvements in aeroelastic behaviors are acquired due to use of SMAs.