Strength of thin-walled structures with local damages

Mathematics. Physics. Mechanics


Miasnikov N. P.1, Rodionov G. L.2*, Sidorenko A. S.2*

1. Bauman Moscow State Technical University, MSTU, 5, bldg. 1, 2-nd Baumanskaya str., Moscow, 105005, Russia
2. Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia



The analysis and generalization of design and experimental researches of local mode of deformation and strength for plates and shells with nonthrough damage, having various geometry, are presented. It is shown, that the most effective way of desgn determination of local stress and strains in a nonthrough damage zone with an entering angle is the using of a finite element method and certain simulation technology. On the volumetrical high dimensionality finit elements base numerical models of plates with various mode nonthrough damages are developed. The models allow to evaluate stresses and local deflection maximums, influence of nonthrough damadge sawing on stress concentration value and, as result, to diminish of damages danger.

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