Registration Number
0224U002113,
(0123U100829)
, R & D reports
Title
Calculation of stress concentration near holes in thin-walled members of rocket technology structures made of nonlinear elastic and viscoelastic materials, and assessing its influence on the strength and fracture of these structural members
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Розрахунок рівня концентрації напружень біля отворів у сферичних, циліндричних і конічних тонкостінних елементах ракетно-космічної техніки, виготовлених з нелінійно-пружних ортотропних композитних матеріалів
Head
Chernyshenko Ivan S., д.т.н.
Registration Date
06-02-2024
Organization
S.P. Tymoshenka Institute of Mechanics of the National Academy of Sciences of Ukraine
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Study of the stress-strain state of thin-walled members of rocket under the action of static loads, including: problem formulation; development of linear and non-linear theory; development of methods, algorithms, programs; solving specific classes of problems for shells with stress concentrators; analysis of the obtained results and regularities of mechanical processes in these structural members.
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On the basis of the refined straight line model and the phenomenological theory of nonlinear elasticity of polymer orthotropic composite materials, an improved technique for calculating the nonlinear elastic state of shells made of composites of arbitrary shear stiffness, including the limiting case of the Kirchhoff-Love hypotheses, has been developed. The effect of nonlinear properties, shear stiffness, geometric and physical-mechanical parameters of the composite material on the stress-strain state of spherical, conical and cylindrical members of rockets with holes was numerically investigated. A number of both evident and new mechanical effects regarding the orientation of the axes of orthotropy in the shell and the mutual influence of nonlinearity and transverse shear on the stress state of rocketry members have been detected.
Product Description
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Storozhuk Yevhen A.
Kaminskyi Anatolii O.
Maksymiuk Volodymyr A.
Zhuk Oleksandr P.
Bahno Oleksandr M.
Hlukhov Yurii P.
Shchuruk Halyna I.
Korniienko Viktoriia F.
Maksymiuk Nina V.
Selivanov Mykhailo F.
Tereschenko Lidiia M.
Guz Oleksandr M.
Kurchakov Yevhen Ye.
Chornoivan Yurii O.
Bohdanova Olha S.
Babich Stepan Yu.
Abrosov Yurii
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2024-02-06
