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1 results

  • 8 - Geometrically Nonlinear Composite Beams

  • Rafael Palacios, Imperial College of Science, Technology and Medicine, London, Carlos E. S. Cesnik, University of Michigan, Ann Arbor
  • Book:
    Dynamics of Flexible Aircraft
    Published online:
    29 June 2023
    Print publication:
    13 July 2023, pp 316-353

  • Summary

    Geometrically-nonlinear composite beam solutions are discussed as structural models for airframes with slender subcomponents. As this is intended for aircraft applications, the beam equations of motion are written with respect to a moving reference frame, which is rigidly-attached to a fixed point on the aircraft. Three different solution methods are then discussed, corresponding to a displacement-based formulation, a strain-based formulation, and a hybrid formulation in intrinsic variables. Key issues in numerical solution are discussed, including the parametrization of the finite rotations and linearization around arbitrary equilibrium conditions.