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Assessment of the effect of cross-section deplaning on the stress-strain state of thin-sheet structural elements with notches

Assessment of the effect of cross-section deplaning on the stress-strain state of thin-sheet structural elements with notches

Abstract

Currently, the use of light steel thin-walled structures from roll-formed sections in industrial and civil construction is increasing. Studies of the strength properties of these structures will lead to the development of the entire industry, including the aviation industry, which includes the development, manufacture and installation of structures using thin-walled bent profiles. The study tested of the influence of deplanation of the cross-section of thin-sheet plates on their use by various methods: FEM-modeling of static thin-sheet samples (plates) with various stress concentrators, imitating structural notches and / or operational defects of structural elements, structural or stimulating stress-strain. fuselage of transport aircraft, analytical calculation and carrying out a full-scale experiment. On the basis of the results obtained and their comparison, conclusions are drawn about the peculiarities of using each of them in the study of the phenomenon of warping on the load of thin-walled elements.

Проведено дослідження впливу депланації поперечного перерізу тонколистових пластинок на їх НДС використовуючи різні методики: МКЕ-моделювання статичного навантаження тонколистових зразків (пластинок) з різними концентраторами напруг, що імітують конструкційні вирізи та/або експлуатаційні дефекти елементів конструкції, наявні фюзеляжу транспортних літаків, аналітичний розрахунок та проведенням натурного експерименту. На основі отриманих результатів та їх порівняння зроблено висновки про особливості використання кожної з моделей при дослідженні явища депланації на навантаження тонкостінних елементів.

Keywords

stressed and deformed state, roll-formed sections, warping, депланація, поперечний переріз, напружено-деформований стан

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold