Aravinth, Dinesh and Shinde, Paritosh and Misra, A and M S, Mahesh
(2018)
Dynamic Aeroelasticity of a Trapezoidal Wing Using Enhanced Piston Theory.
In: 2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 8–12 January 2018, Kissimmee, Florida.
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Abstract
The dynamic aeroelastic behavior of a trapezoidal wing usin
g a newly formulated 3D
enhanced piston theory(EPT) is studied in this paper. The str
uctural equation is built
from von K ́arm ́an’s large deformation theory and 3D aerodyn
amic EPT is derived from
the convected wave equation, expressed as a power series exp
ansion in terms of inverse
Mach number. Special case of 3D EPT satisfy the classical pist
on theory formulation.
The Jacobian transformation along, with Rayleigh-Ritz app
roach has been used to convert
the equations for a cantilevered, trapezoidal plate struct
ure into a cantilevered, square
plate structure to solve for the nonlinear oscillation of a fl
uttering plate through numerical
integration. Several cases are studied by changing the swee
p angle of the trapezoidal plate
for flutter calculation at different Mach numbers from low to h
igh supersonic free stream
conditions
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