Abstract
A multi-parameter optimization procedure for ultralightweight truss-core sandwich panels is presented in this paper. To satisfy high design requirements, the proposed approach incorporates objectives from various structural performances of the material system at many loading cases simultaneously. To determine an optimal topology of the truss-core panel, the procedure combines standard finite element (FE) analysis with structural system profile analysis and multi-factor optimization techniques. Detailed configuration and sizing for both facesheets and individual struts in the sandwich panel are optimized. Two examples are presented: (i) tetragonal core panel, and (ii) plagihedral pyramidal core panel. The optimization improves the structural performance of each panel under multiple loading cases and minimizes its structural mass simultaneously.
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