Robust Truss Topology Design with Beam Elements via Mixed Integer Nonlinear Semidefinite Programming

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In this article, we propose a nonlinear semidefinite program (SDP) for the robust trusstopology design (TTD) problem with beam elements. Starting from the semidefinite formulation ofthe robust TTD problem we derive a stiffness matrix that can model rigid connections between beams.Since the stiffness matrix depends nonlinearly on the cross-sectional areas of the beams, this leads toa nonlinear SDP. We present numerical results using a sequential SDP approach and compare them toresults obtained via a general method for robust PDE-constrained optimization applied to the equationsof linear elasticity. Furthermore, we present two mixed integer semidefinite programs (MISDP), onefor the optimal choice of connecting elements, which is nonlinear, and one for the correspondingproblem with discrete cross-sectional areas.

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Edited by:

Peter F. Pelz and Peter Groche

Pages:

229-238

Citation:

T. Gally et al., "Robust Truss Topology Design with Beam Elements via Mixed Integer Nonlinear Semidefinite Programming", Applied Mechanics and Materials, Vol. 807, pp. 229-238, 2015

Online since:

November 2015

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$41.00

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