The Effects of External Stores on Nonlinear Aeroelastic Responses Conference Paper uri icon


  • This research examines the effects of nonlinear characteristics on the aeroelastic response of cantilevered wing-with-store configurations. The governing equations are developed for a beam model with in-plane bending, out-of-plane bending and torsional motion. This system possesses additional coupling due to nonlinear sources. The nonlinearities include those from large deformations of the wing and kinematics from large rigid-body motions of the pylon-store addition. Although a modest addition, aerodynamic nonlinearities are captured by a quasi-steady model that includes aerodynamic stall. The equations of motion retain up to third-order nonlinear terms. The effects of velocity change and sensitivity to physical parameters (such as stiffnesses and store mass) are depicted in bifurcation diagrams to best delineate the stability features, but simulations, phase portraits, and Poincare maps are used in analysis as well. Copyright © 2004 by the authors.

name of conference

  • 45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference

published proceedings

  • 45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference

author list (cited authors)

  • Kim, K., & Strganac, T.

citation count

  • 5

complete list of authors

  • Kim, KiUn||Strganac, Thomas

publication date

  • April 2004