STRESS MODELING IN COMPOSITE PRODUCTS USING STANDARD OPTICALLY SENSITIVE MATERIAL

Abstract. Objectives The problem of physically modelling stresses in a compound solid body of revolution having a complex shape and with a complex load distribution is considered. According to the similarity criteria of stress, deformations and displacements from the volume forces decrease proportio...

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Main Authors: Elifkhan K. Agakhanov, Nazhmudin S. Magomedeminov, Rustam G. Radzhabov
Format: Article
Language:Russian
Published: Daghestan State Technical University 2018-03-01
Series:Vestnik Dagestanskogo Gosudarstvennogo Tehničeskogo Universiteta: Tehničeskie Nauki
Subjects:
Online Access:https://vestnik.dgtu.ru/jour/article/view/453
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spelling doaj-19303232e06f4e68b81d3288592a554a2021-07-28T20:54:36ZrusDaghestan State Technical UniversityVestnik Dagestanskogo Gosudarstvennogo Tehničeskogo Universiteta: Tehničeskie Nauki 2073-61852542-095X2018-03-0144481810.21822/2073-6185-2017-44-4-8-18383STRESS MODELING IN COMPOSITE PRODUCTS USING STANDARD OPTICALLY SENSITIVE MATERIALElifkhan K. Agakhanov0Nazhmudin S. Magomedeminov1Rustam G. Radzhabov2Daghestan State Technical University.Daghestan State Technical University.Daghestan State Technical University.Abstract. Objectives The problem of physically modelling stresses in a compound solid body of revolution having a complex shape and with a complex load distribution is considered. According to the similarity criteria of stress, deformations and displacements from the volume forces decrease proportionally to the scale of similarity of geometric dimensions, which complicates their direct modelling by the photoelasticity method typically using models made from epoxy materials. Methods Based on the principle of the independent action of the forces, the initial problem is represented as the sum of two problems. In the first uniform problem, the stresses in the body of revolution from the centrifugal forces are simulated by the conventional “freezing” method. In order to solve the second nonuniform problem, the stresses in the region of the model, corresponding to the acting centrifugal forces, are “frozen”. The models are glued in a natural state at room temperature, and the compound model is annealed. Results The band patterns in sections as well as components of radial, tangential and axial stresses on contours and in sections of models are obtained by the methods of normal transmission and numerical integration of the equilibrium equation. According to the modelling criteria, the formula for the transition from stresses in models to stresses in the natural structure is established. The results of the analysis of the effect of a body's material density ratio on the stress state of the entire structure are obtained. Conclusion  Axial stresses have insignificant value as compared to radial and tangential stresses; in addition, the ratio of the densities of the compound body has both a quantitative and qualitative influence on the stress state of the structure.https://vestnik.dgtu.ru/jour/article/view/453physical modellingstressescompound solid body of revolutioncentrifugal forcesphotoelasticity method“freezing” method
collection DOAJ
language Russian
format Article
sources DOAJ
author Elifkhan K. Agakhanov
Nazhmudin S. Magomedeminov
Rustam G. Radzhabov
spellingShingle Elifkhan K. Agakhanov
Nazhmudin S. Magomedeminov
Rustam G. Radzhabov
STRESS MODELING IN COMPOSITE PRODUCTS USING STANDARD OPTICALLY SENSITIVE MATERIAL
Vestnik Dagestanskogo Gosudarstvennogo Tehničeskogo Universiteta: Tehničeskie Nauki
physical modelling
stresses
compound solid body of revolution
centrifugal forces
photoelasticity method
“freezing” method
author_facet Elifkhan K. Agakhanov
Nazhmudin S. Magomedeminov
Rustam G. Radzhabov
author_sort Elifkhan K. Agakhanov
title STRESS MODELING IN COMPOSITE PRODUCTS USING STANDARD OPTICALLY SENSITIVE MATERIAL
title_short STRESS MODELING IN COMPOSITE PRODUCTS USING STANDARD OPTICALLY SENSITIVE MATERIAL
title_full STRESS MODELING IN COMPOSITE PRODUCTS USING STANDARD OPTICALLY SENSITIVE MATERIAL
title_fullStr STRESS MODELING IN COMPOSITE PRODUCTS USING STANDARD OPTICALLY SENSITIVE MATERIAL
title_full_unstemmed STRESS MODELING IN COMPOSITE PRODUCTS USING STANDARD OPTICALLY SENSITIVE MATERIAL
title_sort stress modeling in composite products using standard optically sensitive material
publisher Daghestan State Technical University
series Vestnik Dagestanskogo Gosudarstvennogo Tehničeskogo Universiteta: Tehničeskie Nauki
issn 2073-6185
2542-095X
publishDate 2018-03-01
description Abstract. Objectives The problem of physically modelling stresses in a compound solid body of revolution having a complex shape and with a complex load distribution is considered. According to the similarity criteria of stress, deformations and displacements from the volume forces decrease proportionally to the scale of similarity of geometric dimensions, which complicates their direct modelling by the photoelasticity method typically using models made from epoxy materials. Methods Based on the principle of the independent action of the forces, the initial problem is represented as the sum of two problems. In the first uniform problem, the stresses in the body of revolution from the centrifugal forces are simulated by the conventional “freezing” method. In order to solve the second nonuniform problem, the stresses in the region of the model, corresponding to the acting centrifugal forces, are “frozen”. The models are glued in a natural state at room temperature, and the compound model is annealed. Results The band patterns in sections as well as components of radial, tangential and axial stresses on contours and in sections of models are obtained by the methods of normal transmission and numerical integration of the equilibrium equation. According to the modelling criteria, the formula for the transition from stresses in models to stresses in the natural structure is established. The results of the analysis of the effect of a body's material density ratio on the stress state of the entire structure are obtained. Conclusion  Axial stresses have insignificant value as compared to radial and tangential stresses; in addition, the ratio of the densities of the compound body has both a quantitative and qualitative influence on the stress state of the structure.
topic physical modelling
stresses
compound solid body of revolution
centrifugal forces
photoelasticity method
“freezing” method
url https://vestnik.dgtu.ru/jour/article/view/453
work_keys_str_mv AT elifkhankagakhanov stressmodelingincompositeproductsusingstandardopticallysensitivematerial
AT nazhmudinsmagomedeminov stressmodelingincompositeproductsusingstandardopticallysensitivematerial
AT rustamgradzhabov stressmodelingincompositeproductsusingstandardopticallysensitivematerial
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