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Articles 1 - 12 of 12
Full-Text Articles in Engineering
To The Formation Of A Computational Model Of The Cylindrical Part Of Shell Structures – Main Pipelines, A Abdusattorov, N B. Ruzieva
To The Formation Of A Computational Model Of The Cylindrical Part Of Shell Structures – Main Pipelines, A Abdusattorov, N B. Ruzieva
Scientific-technical journal
Models and methods of numerical calculation of elements of shell structures - main pipelines - are considered in the work. The refined equations of motion for cylindrical shell structures are obtained. To solve boundary value problems of thin-walled structures, the Bubnov-Galerkin method, finite differences using the sweep method is used. On the basis of the above algorithm, a program and implementation of solving the problems of a cylindrical shell has been developed.
Some Issues Of Forecasting Deformation And Destruction On Highways, А.Х. Urakov, М.Т. Mamatkulov
Some Issues Of Forecasting Deformation And Destruction On Highways, А.Х. Urakov, М.Т. Mamatkulov
The Scientific Journal of Vehicles and Roads
The article analyzes the existing methods of forecasting deformations and destructions on highways, identifies the causes of deformations and destructions, and provides recommendations for the prevention of defects on roads. There are no criteria for assessing the properties of road-building materials in terms of the degree of destruction and the intensity of the destruction process.
Research Of Stress-Deformed State Of Multi-Connected Complex Shell Structures, Т.М. Маvlanov, Sh.O. Khudainazarov, B. Yalgashev, O.S. Nurova
Research Of Stress-Deformed State Of Multi-Connected Complex Shell Structures, Т.М. Маvlanov, Sh.O. Khudainazarov, B. Yalgashev, O.S. Nurova
Irrigation and Melioration
Conducting numerical experiments for complex structurally inhomogeneous structures allows us to understand the qualitative picture of the effect of various parameters in a wide range of studies and to give sound recommendations at the design stage for conducting laboratory model and field experiments. In this paper, on the basis of the classical theory of elasticity, the basic equations characterizing the stress-strain state of complex multiply connected shell structures are given and a specific problem is solved. At the same time, some of the structural elements have viscoelastic properties. When solving the problem, the behavior of the structure for the n-th …
Numerical Simulation Of Nonlinear Vibrations Of Discrete Mass With Harmonic Force Perturbation, M. Yusupov, B. A. Akhmedov, Olga Karpova
Numerical Simulation Of Nonlinear Vibrations Of Discrete Mass With Harmonic Force Perturbation, M. Yusupov, B. A. Akhmedov, Olga Karpova
Acta of Turin Polytechnic University in Tashkent
The problem of vibration of a single-mass system under the force excitation of vibration associated with a fixed base by a weightless nonlinear viscoelastic spring is considered. To take into account the rheological properties of the spring material, the Boltzmann-Volterra principle was used. Mathematical models of the problem under consideration are obtained, which are described by integro-differential equations. A solution method based on the use of quadrature formulas has been developed and a computer program has been compiled on its basis, the results obtained are presented in the form of graphs. The influence of nonlinear and rheological properties of a …
Specific Features Of Optical Fiber Cable Operation During Tension And Change Of Ambient Temperature, Dilmurod Davronbekov, Zafar Khakimov
Specific Features Of Optical Fiber Cable Operation During Tension And Change Of Ambient Temperature, Dilmurod Davronbekov, Zafar Khakimov
Bulletin of TUIT: Management and Communication Technologies
This article examines the effect of longitudinal and thermoelastic deformation of an optical module on the technological reserve of an optical fiber. Analytical expressions are given for determining the lower limit of the technological margin of an optical fiber for various types of fiber-optic cable section along the axis.
Simulation Of Forced Vibrations Of The Elements Of A Sewing Machine’S Compound Foot, Sabrina Djamolitdinovna Mukhamedjanova Article
Simulation Of Forced Vibrations Of The Elements Of A Sewing Machine’S Compound Foot, Sabrina Djamolitdinovna Mukhamedjanova Article
Acta of Turin Polytechnic University in Tashkent
The article presents the results of the study of de- sign features of the foot of sewing machines. The effective design scheme and operating principle of the sewing machine foot are pre- sented. Mathematical models of forced oscillations of the elastic plate and the upper plate with the power and rod of the composite foot with the elastic elements are obtained.
Results Of Model Tray Experiments Of A Sand Pressiometer And Methods For Determining The Deformation Characteristics Of Soils, Khasanov Askar, Nabiyeva Nigora
Results Of Model Tray Experiments Of A Sand Pressiometer And Methods For Determining The Deformation Characteristics Of Soils, Khasanov Askar, Nabiyeva Nigora
Problems of Architecture and Construction
In the paper discusses the results of experimental studies of the stress-strain state of the soil around the walls of the borehole under axisymmetric loading. Analytical expressions are given for determining the soil deformation modulus when tested with a sand pressiometer.
On The Formation Of A Computational Model Of Flexible Gently Sloping Shells And Plates Under Repeated Elastoplastic Loading, Abdusattarov A., Abdukadirov F.
On The Formation Of A Computational Model Of Flexible Gently Sloping Shells And Plates Under Repeated Elastoplastic Loading, Abdusattarov A., Abdukadirov F.
Problems of Architecture and Construction
In this article is given the geometric and physical relations for flexible gentle shells, suggests two forms of communication between the deformation of the middle layer and displacements, respectively, the equilibrium equations and the conditions for compatibility of deformation are derived. For a special case, the implementation algorithm and the results of calculating rectangular plates are presented.
Calculation Of The Frame Of Locomotives Tem2 In Operation, M.Sh. Valiyev, E.H. Astanov
Calculation Of The Frame Of Locomotives Tem2 In Operation, M.Sh. Valiyev, E.H. Astanov
Journal of Tashkent Institute of Railway Engineers
The article considers the frame of TEM-2 locomotives taking into account the stresses arising in the operation processes. The calculation of the frame of the locomotive TEM2 makes it possible to assess the tensile-deformed state of the frame and to give a comparative assessment of the structural strength, reliability and long service life before and after their useful use
To Analysis Of The Stressed Condition And Long Durability Of Cylindrical And Conic Pipes Of Polymeric Materials, A. Abdusattarov, F.E. Abduqodirov, D.N. Shamsiyev
To Analysis Of The Stressed Condition And Long Durability Of Cylindrical And Conic Pipes Of Polymeric Materials, A. Abdusattarov, F.E. Abduqodirov, D.N. Shamsiyev
Journal of Tashkent Institute of Railway Engineers
The article considers the solution of the problem of long-term strength and damage of a conical pipe and a hollow cylinder bonded to a thin-walled shell under the action of internal pressure, taking into account the influence of visco-elastic properties of the material on the stress-strain state
Gis-Based Approach For Sinkhole Occurrence Risk Mitigation In Urban Areas For Historic Wieliczka Salt Mine, Agnieszka Malinowska, Ryszard Hejmanowski
Gis-Based Approach For Sinkhole Occurrence Risk Mitigation In Urban Areas For Historic Wieliczka Salt Mine, Agnieszka Malinowska, Ryszard Hejmanowski
Gorniy vestnik Uzbekistana
The article presents the results of the definition of a new methodology for assessing the risk of flooding a shallow slotted mine, which was carried out on the square above the Wieliczka Salt Mine, which is a world heritage. Vertical stresses are estimated on the basis of the theoretical state of rock mass deformation in the area of test chambers. In addition, the risk for chambers indicated in the zone was calculated based on the theory of arctic pressure. The final stage of the study was spatial analysis, which led to the identification of chambers, potentially subject to the influence …
On The Construction Of Canonical Systems Of Equations For Cylindrical And Spherical Shell Structures, A. Abdusattarov, F.E. Abduqodirov
On The Construction Of Canonical Systems Of Equations For Cylindrical And Spherical Shell Structures, A. Abdusattarov, F.E. Abduqodirov
Journal of Tashkent Institute of Railway Engineers
In this article is given the construction of canonical systems, the equation of motion for axisymmetric shell structures, as well as for cylindrical and spherical shells