scholarly journals Topological Optimization of a Complex Shape Forming Stamp

2021 ◽  
Vol 2096 (1) ◽  
pp. 012115
Author(s):  
I K Andrianov
Keyword(s):  
Mathematical Modeling ◽  
Fatigue Strength ◽  
Stress State ◽  
Software Package ◽  
Complex Shape ◽  
Scientific Research ◽  
Topological Optimization ◽  
Optimal Topology ◽  
Ansys Software ◽  
Cold Stamping

Abstract The scientific research is devoted to the mathematical modeling of the optimal topology of stamps with a complex forming surface. Topological optimization is based on the SIMP method by creating a field of pseudo-densities and minimizing the pliability of the structure under the influence of load. When setting the problem, it is proposed to take into account the fatigue strength of polymers, taking into account the restrictions on the stress state. According to the results of the calculation in the ANSYS software package, an optimal redistribution of the stamp material and a reduction in volume due to the removal of elements that have little effect on the rigidity of the structure is obtained. The results of the study can be further applied in the field of hot and cold stamping by creating stamping tools of minimal volume.

Finite Element Calculation of the Polymer Stamp Material Redistribution under Restrictions on Fatigue Life

2022 ◽  
Vol 1049 ◽  
pp. 248-254
Author(s):  
Ivan Andrianov
Keyword(s):  
Finite Element ◽  
Fatigue Strength ◽  
Stress State ◽  
Geometric Model ◽  
Optimization Methods ◽  
Optimization Method ◽  
Topological Optimization ◽  
Optimal Topology ◽  
Calculation Results ◽  
Rejection Coefficient

The numerical method of stamp topological optimization taking into account fatigue strength is presented in the work. It is proposed to take into account the restrictions on the stress state in accordance with the curve of the dependence of the maximum stresses on the number of loading cycles in the ESO topological optimization method. An approach to the selection of the evolutionary coefficient with a step-by-step increase in the rejection coefficient is proposed when constructing an iterative scheme for the rejection of elements by the method of topological optimization. The calculation of the stamp optimal topology with a decrease in volume due to the removal and redistribution of material was carried out in the study. The new geometric model of the optimal topology stamp is based on the predicted distribution of elements with a minimum stress level. The verification calculation of the stress state of the stamp of optimal topology with an assessment of fatigue strength was carried out in the work. The numerical calculation was carried out using the finite element method in the Ansys software package. The minimized stamp volume decreased by 35% according to the calculation results. The results of the study can be further applied in the development of topological optimization methods and in the design of stamping tools of optimal topology.

scholarly journals Development of the Sequential Voids Creation Approach in Axisymmetric Forming Dies

2021 ◽  
Vol 2096 (1) ◽  
pp. 012116
Author(s):  
I K Andrianov
Keyword(s):  
Elastic Modulus ◽  
Fatigue Strength ◽  
Stress State ◽  
Metal Forming ◽  
State Level ◽  
Optimization Methods ◽  
Optimization Method ◽  
Topological Optimization ◽  
Optimal Topology ◽  
Strength Curve

Abstract The study deals with the problem of topological optimization of forming dies with a limitation on fatigue strength. As a model of a stamp, a typical geometric configuration of stamps for the manufacture of parts of the " cup " type is considered. The algorithm for finding the optimal topology is proposed to be built separately in the internal areas under the stamp flanges and under the bottom of the "cup" of forming. Mathematical regularities are presented, according to which elements that fall into the area of predicted removal have a very small elastic modulus, which is widely used in topological optimization methods, then the stress state level is analyzed according to the fatigue strength curve. In the area of the flanges, there is a "build-up" of the mass according to the quadratic law with a variation in the depth of removal of the material. In the area of the bottom of the " cup " of forming, a step-by-step addition of rod elements is proposed until the level of the stress state meets the specified restrictions. Thus, this study is a modification of the topological optimization method. The novelty of the research lies in the construction of a new geometric scheme for determining the area of stored and deleted elements. The results of the study can be further developed in the development of methods for effective redistribution of material, as well as significantly reduce the material costs for the production of metal forming dies.

scholarly journals MODERN APPROACHES TO SOLVING THE CONTACT PROBLEM OF PRESSING A DOUBLESTAMP STAMP INTO AN ELASTIC HALF-SPACE

2021 ◽  
pp. 74-79
Author(s):  
Tetyana Zaytseva ◽  
Ivan Shmelov
Keyword(s):  
Finite Element ◽  
Half Space ◽  
Contact Area ◽  
Software Package ◽  
Complex Shape ◽  
Element Model ◽  
Circular Ring ◽  
Elastic Half Space ◽  
Ansys Software ◽  
Java Language

The work is devoted to solving indentation problems into an elastic half-space of a cylindrical punch with a flat base by the vertical force. The force is aimed through the center of the base. The cross-section of the stamp is a doubly connected area bounded by two concentric lines. A concise review of methods for solving problems of analyzing the contact interaction of cylindrical dies with an elastic half-space is given. The solution of the problem in the form of decomposition by a small parameter is used when the equation of the edge curves depends on the same small parameter. To achieve it, in each approximation, the problem of indentation of a stamp with a doubly connected contact area in the form of a non-circular ring is reduced to a similar problem of indentation of a stamp with a contact area in the form of a circular ring. The software in the Java language has been developed for processing the analytical solution according to the obtained calculation formulas. With the help of the ANSYS software package, a finite element model of the contact interaction of an absolutely rigid stamp with an elastic half-space has been created. Numerical modeling was carried out using a licensed version of the program, free of charge. Several problems have been solved for square rings of different widths. The distribution of pressure under the stamp over different sections and the deepening of the stamp have been obtained. The pressure distribution graphs are plotted. When considering several test problems to assess the adequacy of the finite element model, the numerical results are compared with the results obtained analytically. The resulting model can analyze and predict loads, wear, and fracture of the contact area. The research prospects can include the solution of several problems of analysis of the stress-strain state of the interaction of dies of a complex shape with an elastic half-space, as well as groups of stamps of a complex shape, and the analysis of behavior models depending on the properties and characteristics of an elastic half-space. Keywords: contact problem, stamp, stress-strain state, modeling, JAVA language, finite element analysis, ANSYS software package.

Research into Fatigue Crack Life Characteristics of Bellows Operated under High-Frequency Load

2014 ◽  
Vol 1025-1026 ◽  
pp. 162-166
Author(s):  
Konstantin Nikolaevich Figura ◽  
Igor Mikhailovich Yefremov ◽  
Dmitry Viktorovich Lobanov
Keyword(s):  
Fatigue Crack ◽  
Fatigue Strength ◽  
Safety Factor ◽  
High Frequency ◽  
Software Package ◽  
Reliability Evaluation ◽  
Ansys Software

The article considers the analysis of the bellows fatigue strength carried out using the Ansys software package. The results of the research into the fatigue crack life and fatigue safety factor of a bellow valve are given.The reliability evaluation of the bellow valve working under the high-frequency load has been given by the authors.

scholarly journals Mathematical modeling of low-frequency diagnostic vibration-acoustic vibrations of linear-extended energy objects of housing and communal services

2020 ◽  
Vol 216 ◽  
pp. 01076
Author(s):  
V.E. Zakharova ◽  
S.O. Gaponenko ◽  
A.O. Fedotova
Keyword(s):  
Mathematical Modeling ◽  
Modal Analysis ◽  
Software Package ◽  
Lateral Pressure ◽  
Low Frequency ◽  
Acoustic Vibrations ◽  
Ansys Software ◽  
Natural Vibrations ◽  
Polyethylene Pipes

A modal analysis of natural vibrations of polyethylene pipelines is proposed, which is a calculation of the vertical and lateral pressure exerted by the soil on the pipelines, on the basis of which the study of vibrations in the ANSYS software package was carried out. The results of modal analysis are presented for polyethylene pipes with a layout with inclined walls and various soils.

Study of thin-sheet lap welding joint strain-stress state

2020 ◽  
pp. 295-300
Author(s):  
K.Yu. Trukhanov ◽  
V.V. Bulychev ◽  
M.I. Shatalov
Keyword(s):  
Stress State ◽  
Software Package ◽  
Welded Joint ◽  
Thin Sheet ◽  
Lap Joint ◽  
Ansys Software ◽  
Welding Joint ◽  
Lap Welding ◽  
Strain Stress ◽  
Joint Parameters

The results of steel sheet lap joint strain-stress state are presented. Welding joint parameters requirements are analyzed. The effect of 2 mm welded joint parameters and shape on the strain-stress state using ANSYS software package is studied.

scholarly journals Mathematical modeling of thermal technical characteristics of external protections with air layers

2019 ◽  
Vol 97 ◽  
pp. 06007
Author(s):  
Rustam Mansurov ◽  
Tatyana Rafalskaya ◽  
Dmitry Efimov
Keyword(s):  
Mathematical Modeling ◽  
Heat Transfer ◽  
Software Package ◽  
Outer Wall ◽  
Heat Transfer Process ◽  
Building Envelope ◽  
Ansys Software ◽  
Air Gaps ◽  
Transfer Processes ◽  
Air Layers

A screened enclosing structure of the outer wall of the building without the use of thermal insulation materials is proposed. To ensure the required thermal resistance of the outer fence, screens (cement-containing slabs) and closed air gaps between them are used. Using the ANSYS software package, the heat transfer processes were modeled in a shielded building envelope, consisting of the main (carrier) part and screens with air gaps closed between them. The features of the heat transfer process in the thickness of the outer enclosure are revealed.

EVALUATION OF POSSIBILITIES TO IMPROVE RIGID BODIES

2020 ◽  
Vol 69 (1) ◽  
pp. 392-395
Author(s):  
N.M. Nurullayev ◽  
◽  
D.A. Turgunboyev ◽  
Ye.N. Zholdassov ◽  
◽  
...  
Keyword(s):  
Literature Review ◽  
Software Package ◽  
Scientific Research ◽  
Rigid Bodies ◽  
Robotic Arm ◽  
Electromechanical Devices ◽  
End Effectors ◽  
External Characteristics

Manipulators are used for various purposes in order to simplify tasks or reduce the risk of tasks that are considered impossible, dangerous or difficult for humans. The robotic arm can be equipped with various types of end effectors to perform a variety of tasks. Grips are one of the most commonly used tools for manipulators. This article discusses the analysis of modeling new robotic gripping fingers, based on models of gripping gross rigid bodies of manipulators. A literature review was conducted in the relevant branches of scientific research. The ability to minimize dimensions and masses, as well as the final cost of the product, using available materials and electromechanical devices, various sensors, is evaluated. The external characteristics that make the previously developed analogues ineffective are analyzed. Modeling was released using the SolidWorks software package.

scholarly journals RESEARCH OF INFLUENCE OF AIR TEMPERATURE ON THE LEVEL OF NITROGEN OXIDES IN SMOKE GASES OF BOILER PLANTS

2019 ◽  
Vol 9 (4) ◽  
pp. 27-32
Author(s):  
Olga A. BALANDINA ◽  
Svetlana M. PURING
Keyword(s):  
Mathematical Modeling ◽  
Nitric Oxide ◽  
Nitrogen Oxides ◽  
Flue Gas ◽  
Software Package ◽  
Flame Temperature ◽  
Combustion Process ◽  
Flue Gases ◽  
Oxidizing Agent ◽  
Mixture Formation

The analysis of the values of the concentrations of the formed nitrogen oxides and the temperatures of the jet plume under various conditions of mixture formation is carried out. The plots of the distribution of torch temperatures and concentrations of nitric oxide in the calculated area for oxidizer temperatures of 20, 60, 100, 150, and 200 ° C were obtained and analyzed. Mathematical modeling of the gaseous fuel combustion process was carried out using the FlowVision software package. An analysis of the results showed that a decrease in the temperature of the air supplied as an oxidizing agent leads to a significant decrease in the concentration of nitrogen oxides in flue gases, while not significantly affecting the change in the flame temperature. The research results can be used to solve the problems of optimizing boiler plants, in order to reduce harmful flue gas emissions. Further modeling is planned to determine the dependence of the influence of various factors on the degree of formation of nitrogen oxides in the flue gases of boiler plants.

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