Publication de 6 numéros par an
ISSN Imprimer: 1948-2590
ISSN En ligne: 1948-2604
ANALYSIS OF THE BEHAVIOR OF COMPRESSED LATTICE COMPOSITE RIBS WITH INITIAL DELAMINATION
RÉSUMÉ
A method of analyzing the nonlinear behavior of composite ribs with initial delamination based on the energy approach to solving the problem of determining the state of the rib under compression is presented. The results of the investigation of the influence of the delamination parameters on the effective stiffness of the rib, including analysis of the delamination propagation and post-buckling failure of the delaminated part of the rib, are given. The analysis of the influence of the initial delamination in ribs on the durability parameters of lattice composite fuselage sections has been performed. The computational technique for determining the critical length of the initial delamination when the airframe is designed according to the principle of fail-safe damage with retention of the required safety level is shown.
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Production and Analysis Evolution for Lattice Related Barrel Elements under Operations with Advanced Robustness (PoLaRBEAR), Project Proposal FP7-AAT-2013-RTD, https://trimis.ec.europa.eu/ project/advanced-lattice-structures-composite-airframes, 2013.