ENSURING INDUSTRIAL SAFETY DURING THE OPERATION OF TECHNOLOGICAL EQUIPMENT

2021 ◽  
Author(s):  
Илья Евгеньевич Харламов ◽  
Сергей Ильдусович Валеев
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Bearing Capacity ◽  
Software Package ◽  
Industrial Safety ◽  
Technological Equipment ◽  
The Finite Element Method ◽  
Ansys Software ◽  
Safe Operation ◽  
Load Bearing Capacity

Методом конечных элементов с помощью программного комплекса ANSYS проведен анализ влияния дефекта основного металла типа «расслоение», в зависимости от глубины его залегания, на возможную безопасную эксплуатацию технологического оборудования. По результатам исследований установлено, что расслоение не оказывает существенного влияния на несущую способность оборудования, пока оно локально и не распространяется. The analysis of the influence of a base metal defect of the "stratification" type, depending on the depth of its occurrence, on the possible safe operation of technological equipment was carried out by the finite element method using the ANSYS software package. According to the results of the research, it was found that the stratification does not significantly affect the load-bearing capacity of the equipment, as long as it is local and does not spread.

scholarly journals Features of compressed rods calculations with account of initial imperfections and creep effects

2020 ◽  
Vol 164 ◽  
pp. 02003
Author(s):  
Viacheslav Chepurnenko ◽  
Batyr Yazyev ◽  
Ludmila Dubovitskaya
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Software Package ◽  
Physical Nonlinearity ◽  
The Finite Element Method ◽  
Ansys Software ◽  
Modular Theory ◽  
Initial Imperfections ◽  
Creep Models ◽  
The Finite Difference Method

The article presents solutions to the problem of rod buckling, taking into account creep effects. Trigonometric series, the finite difference method in combination with the programming language MATLAB, as well as the finite element method in the ANSYS software package were used in the solutions. The behavior of the rods is researched for two types of relations between strain and stress during creep, with strains in an explicit and implicit form. When solving, the criterion of initial imperfections with their different values is used, as well as the tangential-modular theory. The results obtained for the two creep models are compared. The conclusion is made about the accuracy of the results of calculations in ANSYS with the presence of a combination of geometric and physical nonlinearity for various creep models.

scholarly journals Method of Calculation Flexural Stiffness Over Natural Oscillations Frequencies

2018 ◽  
Vol 64 (4) ◽  
pp. 89-103
Author(s):  
A. Nesterenko ◽  
G. Stolpovskiy ◽  
M. Nesterenko
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Bearing Capacity ◽  
Flexural Stiffness ◽  
The Finite Element Method ◽  
Load Bearing Capacity ◽  
Natural Oscillations ◽  
Load Bearing ◽  
Resonance Frequencies ◽  
Element Method

AbstractThe actual load-bearing capacity of elements of a building system can be calculated by dynamic parameters, in particular by resonant frequency and compliance. The prerequisites for solving such a problem by the finite element method (FEM) are presented in the article. First, modern vibration tests demonstrate high accuracy in determination of these parameters, which reflects reliability of the diagnosis. Secondly, most modern computational complexes do not include a functional for calculating the load-bearing capacity of an element according to the input values of resonance frequencies. Thirdly, FEM is the basis for development of software tools for automating the computation process. The article presents the method for calculating flexural stiffness and moment of inertia of a beam construction system by its own frequencies. The method includes calculation algorithm realizing the finite element method.

scholarly journals Finite Element Analysis of the Influence About the Space Between Bearing Expanded-Plate to the Bearing Capacity of Single Pile of the MEEP Pile

2015 ◽  
Vol 9 (1) ◽  
pp. 495-497 ◽  
Author(s):  
Yongmei Qian ◽  
Xihui Wang ◽  
Ruozhu Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Bearing Capacity ◽  
Single Pile ◽  
The Finite Element Method ◽  
Ansys Software ◽  
Element Analysis ◽  
Theoretical Support ◽  
Actual Design ◽  
Limiting Value

In this paper, by ANSYS software it is built that a computer simulation analyzing model according to the finite element method, which is analyzed that the failure mechanism of the main pile and the soil around the bearing expanded-plate of the Multi-Expanded-plates pile(the MEEP pile), it is qualitatively determined that the space between the bearing expanded-plates affect the bearing capacity of the single pile of the MEEP pile, and of which the lower limiting value is put forward, in order to provide the theoretical support to the actual design of the MEEP pile

scholarly journals Influence of Bimoment Restraints on the Load-Bearing Capacity of a Steel I-Beam

2020 ◽  
Vol 30 (4) ◽  
pp. 33-47
Author(s):  
Krzysztof Wierzbicki
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Bearing Capacity ◽  
The Finite Element Method ◽  
Load Bearing Capacity ◽  
Geometric Imperfections ◽  
Load Bearing ◽  
Hinged Beams ◽  
Hot Rolled ◽  
Abaqus Software

Abstract The study presents an analysis of steel I-beam warping. The calculations were made for hot-rolled IPE200 hinged beams with different lengths. After determining load-bearing capacity using the GMNIA method, the beams were strengthened with bimoment restraints at each end. The changes in critical moment and load-bearing capacity were then evaluated. The study presents the manner in which the material and geometric imperfections have been determined. The GMNIA calculations were conducted using the Finite Element Method in Abaqus software. The results were then compared to results obtained with traditional methods and acquired from LT Beam software.

Analysis of Hydroelectric Unit’s Upper Bracket Based on Test and FEM

2014 ◽  
Vol 721 ◽  
pp. 131-134
Author(s):  
Mi Mi Xia ◽  
Yong Gang Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Element Model ◽  
The Finite Element Method ◽  
Ansys Software ◽  
Element Analysis ◽  
Hydroelectric Unit ◽  
The Finite Element Analysis ◽  
Strain Rosette ◽  
The Finite Element Model

To research the load upper bracket of Francis hydroelectric unit, then established the finite-element model, and analyzed the structure stress of 7 operating condition points with the ANSYS software. By the strain rosette test, acquired the data of stress-strain in the area of stress concentration of the upper bracket. The inaccuracy was considered below 5% by analyzing the contradistinction between the finite-element analysis and the test, and match the engineering precision and the test was reliable. The finite-element method could be used to judge the stress of the upper bracket, and it could provide reference for the Structural optimization and improvement too.

Improving the honing accuracy of the holes of stepped thin-walled cylinders

2021 ◽  
pp. 49-54
Author(s):  
V.A. Ogorodov
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Cutting Forces ◽  
Software Package ◽  
The Finite Element Method ◽  
Radial Forces ◽  
Thin Walled ◽  
Hole Machining ◽  
Deform 3D ◽  
Walled Cylinder

Different ways of fixing of stepped thin-walled cylinders during honing are analyzed. The conditions for increasing the accuracy of hole machining are determined on the basis of unevenness of cylinder deformations from clamping forces and radial forces simulating cutting forces. The studies used the finite element method and the DEFORM-3D V6.1 software package. Keywords: honing, stepped thin-walled cylinder, hole, accuracy, fixing method, deformation, unevenness, DEFORM-3D V6.1 software package. [email protected]

scholarly journals Calculation of radial inhomogeneity cylindrical shell when exposed to high temperatures by numerical-analytical method and fem

2019 ◽  
Vol 135 ◽  
pp. 01037
Author(s):  
Vladimir Andreev ◽  
Lyudmila Polyakova
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Analytical Method ◽  
Software Package ◽  
Successive Approximations ◽  
Method Of Successive Approximations ◽  
Infinite Cylinder ◽  
The Finite Element Method ◽  
Numerical Analytical Method ◽  
Element Method

The purpose of the work is to compare two calculation methods using the example of solving the axisymmetric thermoelasticity problem. The calculation of a thick-walled cylindrical three-layer shell on the temperature effect was carried out by the numerical-analytical method and the finite element method implemented in the LIRA-CAD software package. In the calculation, a piecewise linear inhomogeneity of the shell due to its three-layer structure and continuous inhomogeneity caused by the influence of a stationary temperature field is taken into account. The numerical-analytical method of calculation involves the derivation of a resolving differential equation, which is solved by the sweep method, it is possible to take into account the nonlinear nature of the deformation of the material using the method of successive approximations. To solve this problem by the finite element method, a similar computational model of the shell was constructed in the LIRA-CAD software package. The solution of the problem of thermoelasticity for an infinite cylinder (under conditions of a plane deformed state) and for a cylinder of finite length with free ends is given. Comparison of the calculation results is carried out according to the obtained values of ring stresses.

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