28th Congress of the International Council of the Aeronautical Sciences, 23 - 28 September 2012, Brisbane, Australia
Paper ICAS 2012-7.1.2

STRENGTH CRITERIA DEVELOPMENT FOR COMPOSITE STRUCTURES BASING ON SOLUTIONS SUPERPOSITION FOR MODELS OF DIFFERENT LEVELS

V. P. Fomin, A. V. Chernov*, A. N. Shanygin*
ESEC MIPT, Russian Federation; *TsAGI, Russian Federation

Keywords: composite structure, strength criteria, matrix failure, delamination

The original method of developing strength criteria for composite structures is proposed. It includes superposition of solutions for nonlinear problems (impact, buckling, post-buckling, matrix nonlinear deformations) on the basis of specialized FE-models of different levels. The method enables generating reliable criteria for strength estimation of structures with defects and damages.

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