Registration Number
0218U002186,
0115U002384
, R & D reports
Title
Development of theoretically substantiated approaches to estimate bearing capacity for spatial structures subjected to the non-stationary thermal load
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Head
Selivanov Yuri Mikhailovich,
Registration Date
30-01-2018
Organization
Oles Honchar Dnipro National University
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The object of the study is the processes of deformation and loss of load-bearing capacity of non-uniform spatial (shell-plate) structures under conditions of nonstationary thermal-force loading. The aim of the work is to create scientifically based approaches to forecasting the load-bearing capacity (strength and stability) of spatial structures in conditions of distributed and local non-stationary thermal and force loading using holographic interferometry (HI) and finite element (FEM) methods. Modern methods of mathematical, computer and experimental modeling of the problems of mechanics of a deformable solid were used. A method of combined holographic interferograms is proposed for investigating unsteady fields of deformations of inhomogeneous shell-plate structures, thе method that substantially extends the applied capabilities of the НI. Based on this method and MCE, an effective approach to the determination of non-stationary thermal stresses of inhomogeneous shells with incomplete information on the temperature field has been developed and tested. Based on the projection-iterative schemes of MCE implementation, which allow significant reducing the computer calculation time, methods and algorithms for calculating the stress-strain state (SSS) of shells with cutouts during plastic deformation of the material have been developed and verified. The work finds application in educational process of students of mechanical profile, at preparation of scientific staff of the top skills. The results of research work can be used to create methods for diagnosing the SSS of heterogeneous spatial structures under conditions of non-stationary thermal force loading, for calculating structural elements for strength and rigidity, for scientific justification of recommendations for improvement of new technology in different sectors.
Product Description
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Адлуцький Віктор Якович
Гарт Етері Лаврентіївна
Дзюба Олександр Анатолійович
Дзюба Петро Анатолійович
Кузьменко Володимир Іванович
Лисицина Олена Анатоліївна
Пилипенко Олександр Георгійович
Рибка Володимир Михайлович
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2020-04-02
