Now showing items 1-5 of 5

    • Fast approximations of dynamic stability boundaries of slender curved structures 

      Zhou, Yang; Stanciulescu, Ilinca; Eason, Thomas; Spottswood, Michael (2017)
      Curved beams and panels can often be found as structural components in aerospace, mechanical and civil engineering systems. When curved structures are subjected to dynamic loads, they are susceptible to dynamic instabilities ...
    • A lower bound on snap-through instability of curved beams under thermomechanical loads 

      Stanciulescu, Ilinca; Mitchell, Toby; Chandra, Yenny; Eason, Thomas; Spottswood, Michael (2012)
      A non-linear finite element formulation (three dimensional continuum elements) is implemented and used for modeling dynamic snap-through in beams with initial curvature. We identify a non-trivial (non-flat) configuration ...
    • Nonlinear elastic buckling and postbuckling analysis of cylindrical panels 

      Zhou, Yang; Stanciulescu, Ilinca; Eason, Thomas; Spottswood, Michael (2015)
      This paper revisits the buckling analysis of a benchmark cylindrical panel undergoing snap-through when subjected to transverse loads. We show that previous studies either overestimated the buckling load and identified a ...
    • Numerical pathologies in snap-through simulations 

      Chandra, Yenny; Stanciulescu, Ilinca; Eason, Thomas; Spottswood, Michael (2012)
      Aircraft structures operating in severe environments may experience snap-through, causing the curvature on part or all of the structure to invert inducing fatigue damage. This paper examines the performance of beam and ...
    • A robust composite time integration scheme for snap-through problems 

      Chandra, Yenny; Zhou, Yang; Stanciulescu, Ilinca; Eason, Thomas; Spottswood, Stephen (2015)
      A robust time integration scheme for snap-through buckling of shallow arches is proposed. The algorithm is a composite method that consists of three sub-steps. Numerical damping is introduced to the system by employing an ...