Evaluation of Bevarage Can End Forming Process Using Kolmogorov’s Fracture Criterion

2017 ◽  
Vol 746 ◽  
pp. 3-9
Author(s):  
Vladimir G. Kolobov ◽  
Evgenii V. Aryshenskii ◽  
Yaroslav A. Erisov ◽  
Alexander Nam ◽  
Maksim S. Tepterev
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Aluminum Alloy ◽  
Stress State ◽  
Strain State ◽  
Fracture Criterion ◽  
Relative Elongation ◽  
Rolling Direction ◽  
Forming Process ◽  
Stress Strain

The present study investigates the process of beverage can end forming from 5182 aluminum alloy. Stress-strain state during forming is analyzed using finite element method in PAM-Stamp 2G, and fracturing probability is evaluated based on V.L. Kolmogorov’s fracture criterion. It is established, that stress state does not provide the sufficient plasticity margin during ends forming. Blank material plasticity resource is depleted during preliminary and reverse drawing stages, defects accumulation during countersink forming is negligible. Minimum relative elongation value, responsible for fracture-free end forming, is 6% in the rolling direction.

scholarly journals Choice of technologies of ensuring exploitation suitability of buildings in the underground construction area

Vestnik MGSU ◽  
2020 ◽  
pp. 452-461
Author(s):  
Emil Imran Оglu Alirzaev ◽  
Marina E. Dement'eva
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Strain State ◽  
The Finite Element Method ◽  
Underground Construction ◽  
Underground Structures ◽  
Stress Strain ◽  
Computer Complex ◽  
Stress Strain State ◽  
Element Method

Introduction. One of the serious problems in the construction of underground structures in a dense urban area is the occurrence of excess deformations of the foundations of operating buildings that fall into the zone of influence of underground construction. The subject of the study was the calculated justification of the modern technology of compensatory injection. The relevance of the task is determined by the fact that the choice of the most effective protection technology should be based not only on a comparison of technological precipitation with maximum permissible values, but also on the assessment of the possibility of monitoring and controlling the movements of the foundations of buildings and structures during construction and subsequent operation. The purpose of the study was to compare various methods of protecting the foundations of existing buildings and structures and justify the selection of the most effective of them for further implementation and dissemination in the design and construction of urban underground structures. Materials and methods. On the basis of the survey data of the operated building falling into the impact zone of excavation of the pit for the construction of the installation and shield chamber of the subway, the parameters of the stress-strain state of its foundations are studied by mathematical modeling. The problem was solved by the finite element method based on the software and computer complex Z_Soil v.18.24. Results. Based on the analysis of the results of the examination of the administrative building using the finite element method, a change in the parameters of the stress-strain state of the foundations was modeled with various technologies for strengthening it. In the course of solving the geotechnical problem, it was found that the minimum impact on the foundations of the building during the construction of the pit was obtained in the method of compensatory injection. The system of criteria for making a decision on choosing an effective way to ensure the suitability of buildings in the underground construction zone for operation is substantiated. Conclusions. The results of this work can be used to justify the choice of technology for prevention and control of excess deformations of foundations. The function for calculating the volume of injected material in the Z_Soil software and computer complex can be used to justify the consumption of materials and the economic efficiency of the technological solution.

FEM Analysis of Cylindrical Structural Elements under Local Shock Loading

2014 ◽  
Vol 566 ◽  
pp. 499-504 ◽  
Author(s):  
Leopold Kruszka ◽  
Yu.S. Vorobiov ◽  
N.Yu. Ovcharova
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Strain State ◽  
Shock Loading ◽  
Dynamic Properties ◽  
Fem Analysis ◽  
Finite Deformations ◽  
High Rate ◽  
Structural Elements ◽  
Stress Strain

High rate deformations of structures cylindrical elements are considered 3D formulation. Elastic-plastic finite deformations and dynamic properties of material take into account. The problem become geometrically and physically nonlinear and finite element method is used. The numerical analyses of dynamics stress-strain state of real structures elements is executed.

Effective Forming Processes of Hub Forging from Aluminum Alloy AlCu2SiMn

2013 ◽  
Vol 773-774 ◽  
pp. 115-118
Author(s):  
Andrzej Gontarz
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Aluminum Alloy ◽  
Metal Forming ◽  
Material Flow ◽  
Theoretical Research ◽  
Material Consumption ◽  
Forming Process ◽  
Metal Forming Process ◽  
Large Material

This paper presents results of theoretical and experimental research works on metal forming process of a hub. A typical technology of forging on hammer of this part with flash was discussed. Two new processes of a hub forging were proposed, characterized by large material savings in comparison with typical technology. The first process is based on forming without flash of a forging with axial cavity. The second one is connected with forming of forging from pipe billet. The realization of these processes is possible at the application of a press with three movable working tools. Theoretical research works were done on the basis of simulations by means of finite element method. Simulations were made mainly in order to determine kinematics of material flow in forging processes and precision of shape and dimensions of obtained products. The first of the proposed processes was experimentally verified and a product of good quality was obtained. Material consumption of the analyzed processes and other factors acting on their effectiveness were also compared.

Investigation of the stress-strain state of turbine rotors by the finite-element method

1982 ◽  
Vol 14 (8) ◽  
pp. 1119-1123 ◽  
Author(s):  
P. P. Gontarovskii ◽  
L. I. Gontarovskaya ◽  
G. A. Marchenko ◽  
Yu. I. Matyukhin
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Strain State ◽  
The Finite Element Method ◽  
Stress Strain ◽  
Stress Strain State ◽  
Turbine Rotors ◽  
Element Method

scholarly journals Analysis of stress-strain state of the naturally twisted rod bending by transverse force on the basis of the finite element method

2013 ◽  
Author(s):  
Н.В. Курбатова ◽  
Ю.А. Устинов ◽  
Е.С. Чумакова
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Strain State ◽  
Transverse Force ◽  
The Finite Element Method ◽  
Stress Strain ◽  
Stress Strain State ◽  
Element Method

На основе метода однородных решений и численным интегрированием методом конечных элементов двумерных краевых задач, с помощью которых описываются решения задач Сен-Венана о чистом изгибе и изгибе поперечной силой естественно закрученного стержня, строится решение и на его основе проводится анализ напряженно-деформированного состояния стержня прямоугольного поперечного сечения для произвольных значений относительного угла закручивания τ0.

scholarly journals CALCULATION OF CULVERTS UNDER ROAD EMBANKMENTS USING THE SEMI-ANALYTICAL FINITE ELEMENT METHOD

2021 ◽  
Vol 9 (2) ◽  
pp. 56-60
Author(s):  
Mikhail Turko
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Strain State ◽  
Structural Mechanics ◽  
Stress Strain ◽  
Metal Structures ◽  
Bulk Solids ◽  
Stress Strain State ◽  
Corrugated Metal ◽  
Element Method

The article discusses the methodology for calculating corrugated metal structures used as culverts based on the semi-analytical finite element method. The calculation is carried out according to a non-deformable scheme using the load dependences obtained on the basis of the structural mechanics of bulk solids. Significant differences in the nature of the stress-strain state of corrugated structures in comparison with smooth shells is revealed.

Indentation of the cylindrical shell in the elastoplastic half-space

2018 ◽  
Vol 13 (3) ◽  
pp. 47-51
Author(s):  
A.A. Filippov
Keyword(s):  
Cylindrical Shell ◽  
Stress State ◽  
Half Space ◽  
Safety Factor ◽  
Strain State ◽  
Fracture Criterion ◽  
Steel Shell ◽  
Stress Strain ◽  
Stress Strain State ◽  
Steel Cylindrical Shell

The article deals with the problem of pressing the steel cylindrical shell into the elastoplastic half-space having a cylindrical concavity. The calculation and analysis of the stress-strain state of the steel shell and elastoplastic half-space. Given the dependence of the shear half-space, the safety factor and stress state in steel shell from the force pushing the shell in the half-space. The calculations were carried out for three radii of concavities and two types of half-space materials. It was assumed that the elastoplastic half-space obeys the Mohr-Coulomb fracture criterion.

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