SUBSTANTIATION OF TECHNOLOGICAL MODES OF PROCESSING CRYSTALLIZING METAL BY PRESSURE USING THE PROCAST SOFTWARE PRODUCT

2020 ◽  
Vol 4 (1) ◽  
pp. 22-27
Author(s):  
M.S. DENISOV ◽  
G.A. KOTOV ◽  
S.M. PETUKHOVA
Keyword(s):  
Software Package ◽  
3D Model ◽  
Casting Process ◽  
Hydraulic Press ◽  
Software Product ◽  
Modes Of Processing ◽  
Crystallization Under Pressure ◽  
Simulation Results ◽  
Experimental Values

The possibility of modeling the casting process with crystallization under pressure in the ProCast software package is considered. Simulation results are compared with experimental values. The study of the process is carried out on a horizontal hydraulic press, using technological equipment for the production of cylindrical blanks Ø90× 70 mm. The stages of modeling include a sequence of actions: preparing the geometry of the 3D model of the foundry block; drawing a surface grid using the functions sewn into the program; determination of thermophysical properties and setting boundary conditions. Using solvers, the filling of the mold and the temperature distribution in the mold, taking into account the pouring time, were simulated. In the work, the distribution of macroporosity inside the casting was calculated. Comparing the simulation results and the data obtained experimentally, it is concluded that the ProCast software product is adequate and can be used to solve scientific and applied problems

Determination of strength characteristics of 3D model reservoir for LNG by using Ansys Workbench software

2020 ◽  
Keyword(s):  
Mechanical Properties ◽  
Natural Gas ◽  
Software Package ◽  
Axial Load ◽  
3D Model ◽  
Liquefied Natural Gas ◽  
Strength Characteristics ◽  
Expansion Joint ◽  
Ansys Workbench

In this article, we consider a 3D model of a tank for liquefied natural gas (LNG) in the form of an axial corrugated compensator, namely, we analyze the calculated strength characteristics obtained by modeling the axial load in the Ansys Workbench software package. The design was rationalized taking into account the revealed regularities of changes in the mechanical properties of the cryogenic capacity material. Keywords Liquefied natural gas (LNG); small cryogenic cistern (SCC); drainagefree storage; finite element 3D model; bellows expansion joint

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

Analysis of Stress Concentrations in Thick Cylinders With Sideholes and Crossholes

1972 ◽  
Vol 94 (3) ◽  
pp. 815-824 ◽  
Author(s):  
J. C. Gerdeen
Keyword(s):  
Stress Concentration ◽  
Stress Concentrations ◽  
Concentration Factors ◽  
Stress Concentration Factors ◽  
Experimental Values ◽  
Pressure Stress ◽  
Shrink Fit ◽  
Outside Diameter ◽  
Theoretical Results

An approximate theoretical analysis is presented for the determination of stress concentration factors in thick walled cylinders with sideholes and crossholes. The cylinders are subjected to both internal pressure and external shrink-fit pressure. Stress concentration factors are plotted as functions of the geometrical ratios of outside diameter-to-bore diameter, and bore diameter-to-sidehole diameter. Theoretical results are compared to experimental values available in the literature and results of experiments described in a separate paper.

Selection of the optimal hydraulic drive for the press

2021 ◽  
pp. 50-60
Author(s):  
A.A. Antsifirov ◽  
V.A. Krivoshein
Keyword(s):  
Technological Process ◽  
Electric Motor ◽  
Software Package ◽  
Hydraulic Drive ◽  
Hydraulic Press ◽  
Topological Model ◽  
Electric Motors ◽  
Engine Operation ◽  
The Press ◽  
Selection Of

The research presented in the article is devoted to the selection of the electric motor of the hydraulic press drive with a nominal force of 5MN. The article presents the main characteristics and the description of the press operation using the means of mechanization of the technological process of pressure treatment. Using the Deform-3D software package, the process of stamping the crosspiece of the ZIL-130 cardan shaft was simulated. Based on the presented hydraulic scheme of the press, its topological model was formed in the PA-9 software package. The deformation force obtained in the course of modeling the technological process of stamping was used in the topological model of the press. Using a tabular cyclogram, the sequence of actuation of the end switches and hydraulic distributors during the stamping process is shown. In the article, two variants of engine operation were analyzed. Based on the results of the conducted research, it is necessary to focus on the second version of the 55 kW engine, the operation of which will provide the required characteristics of the hydraulic drive of the press, which in turn will allow for technological stamping operations. The simulation tools allow providing estimated information when selecting the necessary tools to ensure the optimal characteristics of hydraulic press drives. The article considered the variation of electric motors that differ from each other in nominal characteristics, with constant characteristics of the pump. For more accurate estimates of energy savings during the operation of the hydraulic drive, it is necessary to vary the characteristics of the pump in the simulation, and the best option is to form an experiment planning matrix when combining the characteristics of the electric motor and the hydraulic pump. This approach ultimately allows forming a function for which one can select a hydraulic drive from existing brands of electric motors and hydraulic pumps for presses of the corresponding range of nominal force.

scholarly journals The interaction of a reinforced concrete cylindrical tank with soil in complicated functional conditions

2018 ◽  
Vol 45 ◽  
pp. 00030
Author(s):  
Barbara Kliszczewicz
Keyword(s):  
Reinforced Concrete ◽  
Numerical Analysis ◽  
Software Package ◽  
3D Model ◽  
Cylindrical Tank ◽  
Plastic Properties ◽  
Geotechnical Parameters ◽  
Structure Deformation ◽  
High Deformability ◽  
Properties Of Soil

The paper is dedicated to the analysis interactions between the structure of a field-based cylindrical tank made from reinforced concrete and randomly or unevenly distributed strata of subsoil. The numerical analysis with the use of the Z_Soil software package was carried out to investigate how variable geotechnical parameters demonstrated by subsoil strata with a low bearing capacity and a high deformability influence strain and stress of the tank shell and bottom. The arrangement made up of a cylindrical tank and stratified subsoil (its 3D model) was subjected to the analysis with the consideration of the elastic and plastic properties of soil (the Coulomb-Mohr model). The analysis results, presented as diagrams of the structure deformation and stresses illustrate the uneven settlement of the tank shell and its internal strain.

Path Following System for Cooperative Mobile Robots

2010 ◽  
Vol 166-167 ◽  
pp. 161-166
Author(s):  
Ionut Dinulescu ◽  
Dorin Popescu ◽  
Mircea Nitulescu ◽  
Alice Predescu
Keyword(s):  
Artificial Intelligence ◽  
Mobile Robots ◽  
Path Following ◽  
Path Generation ◽  
Cooperative Robots ◽  
Generation System ◽  
Robot Systems ◽  
Simulation Results ◽  
Trajectory Generator

Recent advances in the domains of social and life artificial intelligence have constituted the basis for a new discipline that studies cooperation in multi-robot systems and its utility in applications where some tasks cannot be carried out by a single robot. This paper introduces a trajectory generator which is used for determination of the most appropriate trajectory which a robot needs to track in order to perform different tasks specific to cooperative robots, such as moving in a given formation or pushing an object to a given destination. Different algorithms are described in this paper, starting from simple polyline and circular paths to complex Bezier trajectories. Simulation results of the proposed path generation system are also provided, along with the description of its implementation on real mobile robots. An implementation of real robots is also presented in this paper.

Finite Element Simulation and Experimental Study on Isothermal Forging Technology for a Complex-Shaped Titanium Alloy Wing

2013 ◽  
Vol 575-576 ◽  
pp. 523-526
Author(s):  
Feng Cheng ◽  
Hong Yan Jiang
Keyword(s):  
Titanium Alloy ◽  
Variable Cross Section ◽  
Hydraulic Press ◽  
Asymmetric Structure ◽  
Variable Cross ◽  
Forming Process ◽  
Isothermal Forging ◽  
Filling Ability ◽  
Simulation Results ◽  
Mechanical Performances

A closed isothermal forging process was adopted for precision forming of the Ti-6Al-4V wing with a variable cross-section asymmetric structure. Firstly, simulations under different process parameters, such as the deformation temperature, punchs velocity et al. were analyzed with DEFORM-3D software to eliminate the defects in the isothermal forming process. The simulation results demonstrated that the loads during isothermal deformation were determined not just by the forging temperature but the punchs velocity, the less velocity of punch, the better filling ability, and yet temperatures from 900 to 950°C had less influence on filling ability. To verify the validity of simulation results, the isothermal forging experiment was carried out on an isothermal forging hydraulic press (THP10-630). It is demonstrated that the optimized billet dimension can ensure the quality of forging part and the titanium alloy wing component with complex shape was successfully forged with the punch speed of 0.1mm/s at 950°C and its mechanical performances were improved.

scholarly journals Determination of Phase-Eigenvalues by Rational Factorization and Enhanced Simulation of Two-Phase Mass Flow

2019 ◽  
Vol 2 (2) ◽  
pp. 61-77
Author(s):  
Puskar R. Pokhrel ◽  
Bhadra Man Tuladhar
Keyword(s):  
Fluid Dynamics ◽  
Debris Flows ◽  
Lateral Pressure ◽  
Solid Phase ◽  
Fluid Phase ◽  
Factorization Method ◽  
Phase Interaction ◽  
Two Phase ◽  
Simulation Results

In this paper, we present simple and exact eigenvalues for both the solid- and fluid-phases of the real two-phase general model developed by Pudasaini (2012); we call these phase-eigenvalues, the solid- phase-eigenvalues and the fluid-phase-eigenvalues. Results are compared by applying the derived phase- eigenvalues that incorporate the phase-interactions in the two-phase debris movements against the simple and classical solid and fluid eigenvalues without any phase interaction. We have constructed several different set of eigenvalues including the coupled phase eigenvalues by using rational factorization method. At first, we consider for general debris height; factorizing the solid and fluid lateral pressure contributions by considering the negligible pressure gradient; negligible solid lateral pressure; negligible fluid lateral pressure; negligible solid and fluid lateral pressure. Secondly, for a thin debris ow height, we also construct the fourth set of eigenvalues in three different cases. These phase-eigenvalues incorporate strong interaction between the solid and fluid dynamics. The simulation results are produced by taking all these different sets of coupled phase-eigenvalues and are compared with the classical uncoupled set of solid and fluid eigenvalues. The results indicate the importance of phase-eigenvalues and supports for a complete description of the phase- eigenvalues for the enhanced description of real two-phase debris flows and landslide motions.

Sign in / Sign up

Export Citation Format

Share Document