scholarly journals Deformation analysis based on GNSS measurements in Tashkent region

2021 ◽  
Vol 227 ◽  
pp. 04002
Author(s):  
Dilbarkhon Sh. Fazilova ◽  
Lola V. Sichugova
Keyword(s):  
Software Package ◽  
Strain State ◽  
Large Strain ◽  
Water Reservoir ◽  
Geodetic Network ◽  
Transformation Method ◽  
Deformation Analysis ◽  
The Finite Element Method ◽  
Maximum Value ◽  
Gnss Measurements

This paper presents the results of the GNSS geodetic network deformation analysis in the Tashkent region, as an example of an urban area, where obtaining reliable information for assessing hazard risk is of great importance. A software package in Delphi language has been developed for the assessment of the datum differences between 2009 and 2011 by implementing the 3D Helmert transformation method. The result revealed that there is significant translation and rotation in the network, while the scale of the network remains almost constant during two years period. The area strain was estimated by the finite element method. Most of the Tashkent region can be considered to be in a high compression (negative dilatation) strain state with maximum value -230cl0-8. On the contrary, remarkable positive dilatation strain is concentrated on the coastline of the Charvak water reservoir, where large strain is about 351.l0-8.

MODELING OF COMPLEX STRESS-STRAIN STATE AND TECHNICAL DIAGNOSTICS OF BRICK BUILDINGS

2020 ◽  
Vol 13 (2) ◽  
pp. 4-11
Author(s):  
Natal'ya Grebennikova ◽  
Pavel Kuprienko ◽  
S. Nikolenko ◽  
Svetlana Sazonova
Keyword(s):  
Impulse Control ◽  
Software Package ◽  
Strain State ◽  
Complex Stress ◽  
Technical Condition ◽  
Control Device ◽  
Technical Diagnostics ◽  
The Finite Element Method ◽  
Calculation Results ◽  
Non Destructive

In carrying out research on the technical condition of brick buildings, there is a need to study the strength of load-bearing walls. The paper presents the results of determining the strength of silicate brick by a non-destructive diagnostic method, using the ONIX-2.6 shock impulse control device of bricks. Calculation results are presented to determine the cause of cracking in brick walls. Verification calculations of building constructions were performed by the finite element method using the NormFEM application of the licensed version of the NormCAD software package.

scholarly journals Stress-strain state of spherical shells with two unequal holes

2021 ◽  
Vol 258 ◽  
pp. 09085
Author(s):  
Nurilla Noraliev ◽  
Bakhrom Ishniyazov ◽  
Bunyod Safarov ◽  
Oybek Saparov
Keyword(s):  
Finite Element Method ◽  
Composite Materials ◽  
Stress Concentration ◽  
Software Package ◽  
Shell Thickness ◽  
Strain State ◽  
Numerical Study ◽  
Shear Stiffness ◽  
The Finite Element Method ◽  
Spherical Shells

This article presents the results of a numerical study of the stress concentration around two equal and unequal holes in an orthotropic spherical shell made of composite materials under the action of internal pressure. The influence of geometric (hole radii, shell thickness, distance between holes) characteristics, as well as material orthotropy and shear stiffness, on the stress state of spherical shells made of composite materials is studied. A numerical algorithm based on the finite element method has been developed and a software package has been implemented on a computer that allows solving the problem of stress concentration near two unequal holes in spherical shells made of composite materials.

scholarly journals Influence of Internal Defects of Basic Metal of the Equipment on Its Operational Properties

2022 ◽  
Author(s):  
S.I. Valeev
Keyword(s):  
Base Metal ◽  
Software Package ◽  
Strain State ◽  
Process Equipment ◽  
The Finite Element Method ◽  
Ansys Software ◽  
Intensity Factors ◽  
Safe Operation ◽  
Defect Zone ◽  
Distribution Of Stress

Abstract. The paper deals with the issue of safe operation of technological equipment with a defect in the base metal of the delamination type. Mathematical modeling of the stress-strain state in the defect zone by the finite element method in ANSYS software package is carried out. The article presents and analyzes the obtained graphs of the distribution of stress intensity factors. Based on the analysis of the obtained dependences, it is shown that stratification of the base metal does not have a significant effect on the performance of the process equipment.

scholarly journals The stability of the wall of the main beam of the movable bridge (application of SP method)

2020 ◽  
Vol 157 ◽  
pp. 06014
Author(s):  
Sergey Chizhov ◽  
Artyom Pismak ◽  
Anatoly Antonyuk
Keyword(s):  
Software Package ◽  
Strain State ◽  
Continuous Steel ◽  
Main Beam ◽  
Steel Beam ◽  
The Finite Element Method ◽  
System A ◽  
Axis Of Rotation ◽  
The Stability ◽  
Movable Bridge

The objects of the article are: analyze the work of the main beams of the movable span of the drop-down system near the axis of rotation; analyze the stress-strain state of the main beams of the movable span of the drop-down system near the axis of rotation; analyze the acceptability of the normative methodology (SP) for calculating the stability of the wall of a continuous steel beam during the design and calculation of movable bridge of the drop-down system. A computational-mathematical model of the movable span of the drop-down system is developed in a modern computational software package based on the finite element method. The main disadvantages of the normative methodology (SP) for calculating the wall stability of a continuous steel beam which used in design and calculation of movable bridge of a drop-down system are presented.

scholarly journals Determination of stress-strain state of the wooden church log walls with software package

2016 ◽  
Vol 86 ◽  
pp. 02019 ◽  
Author(s):  
Anastasia Chulkova ◽  
Sergey Lukichev ◽  
Marina Romanovich
Keyword(s):  
Software Package ◽  
Strain State ◽  
Stress Strain ◽  
Stress Strain State

Research of throwing areols of underground pipeline in permafrost

2021 ◽  
pp. 21-30
Author(s):  
T. S. Sultanmagomedov ◽  
◽  
R. N. Bakhtizin ◽  
S. M. Sultanmagomedov ◽  
T. M. Halikov ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Experimental Study ◽  
Finite Element ◽  
Strain State ◽  
Operating Temperature ◽  
Operating Conditions ◽  
Loss Of Stability ◽  
Underground Pipeline ◽  
The Finite Element Method ◽  
Permafrost Thawing

Study is due to the possibility of loss of stability of the pipeline in the process of pumping a product with a positive operating temperature and the formation of thawing halos. The article presents the ways of solving the thermomechanical problem of pipeline displacement due to thawing. The rate of formation of a thawing halo is investigated depending on the initial temperatures of the soil and the pumped product. The developed monitoring system makes it possible to study the rate of occurrence of thawing halos in the process of pumping the product. An experimental study on the formation of thawing halos around the pipeline was carried out on an experimental model. A thermophysical comparative calculation of temperatures around the pipeline on a model by the finite element method has been carried out. Keywords: underground pipeline; permafrost; thawing halo; monitoring; operating conditions; stress–strain state.

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