Introducing a discrete modelling technique for buckling of panels under combined loading

Reference:

Kim, H. A., Featherston, C. A., Ussel, J. and Williams, P. A., 2008. Introducing a discrete modelling technique for buckling of panels under combined loading. Structural and Multidisciplinary Optimization, 36 (1), pp. 3-13.

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Abstract

The paper introduces a discrete model to describe the buckling of a stiffened panel beam under a complex loading environment. The study begins by examining the existing load interaction equation for a continuous panel. Experimental and finite element investigations establish the validity of considering the critical panel of a more complex structure in isolation. The paper then devises a discrete model for this critical panel, which was validated for a range of boundary conditions using anti-optimisation. The numerical results show that the discrete model exhibits the buckling behaviour of a continuous panel under combined loading. Recent studies established that the truss-lattice configuration has stable post-buckling behaviour and derived fast analysis technique for such a structure. It is therefore concluded that the truss-lattice model introduced in the present paper can offer a fast analysis formulation for buckling (and potentially post-buckling) of multiple-panel beams suitable for optimisation.

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