Determination of the dimensions of the deformation zone in loessial soil saturated with water

1969 ◽  
Vol 6 (4) ◽  
pp. 239-241 ◽  
Author(s):  
R. M. Kodryanova
Keyword(s):  
Deformation Zone ◽  
Loessial Soil

Research of stamping of unequal channel bars. Part 4. Deformed state of the workpiece when extruding channels. 2. Deformations under the punch end

2021 ◽  
pp. 53-57
Author(s):  
A.L. Vorontsov
Keyword(s):  
Plastic Deformation ◽  
Plane Strain ◽  
Deformation Zone ◽  
Plastic Deformation Zone ◽  
Die Forging ◽  
Deformed State

Determination of the deformed state of the workpiece at free extrusion of channels is considered. Formulas are obtained for determining the accumulated deformations at a given point of the plastic deformation zone and extruded walls of the product for any punch working stroke. Keywords: die forging, extrusion, misalignment, punch, matrix, plane strain, accumulated deformations, hardening. [email protected]

scholarly journals Determination of the stress state in the deformation zone under local loading

2019 ◽  
Vol 315 ◽  
pp. 052080
Author(s):  
Yury Melnik ◽  
Semen Zaides ◽  
Nikolaj Bobrovskij ◽  
Ngo Cao Cuong ◽  
Olesja Levitskih ◽  
...  
Keyword(s):  
Stress State ◽  
Deformation Zone ◽  
Local Loading

Stresses in anvil — strip system during production of copper sheets in continuous casting and deformation installation

2020 ◽  
pp. 508-511
Author(s):  
O.S. Lekhov ◽  
D.Kh. Bilalov
Keyword(s):  
Continuous Casting ◽  
Cyclic Deformation ◽  
Deformation Zone ◽  
Deformation Process ◽  
Loading Pattern ◽  
Tangential Stresses ◽  
Nite Element ◽  
Calculation Results ◽  
Deformation Processes

The prospects for development of combined continuous casting and deformation processes in production of sheets from nonferrous metals and alloys are considered. Technological possibilities of combined continuous casting and deformation process installation for production of cooper sheets are described. Problem of simultaneous determination of stress-strain state of metal in cyclic deformation zone and stresses in anvils on reduction force in the production on installation of cooper sheets is given. The calculation results are obtained by solving the problems of elastic-plasticity and elastic by fi nite element method using the ANSYS package. The regularities for the distribution of axial and tangential stresses in the cyclic deformation zone in the production on instal lation of cooper sheets are presented. Design scheme and loading pattern of anvil in the production on installation of cooper sheets is described. The values and regularities of axial stresses distribution in anvils of installation depending on reduction force are presented.

Applicability of the laws of elasticity for the determination of the elastic-region length in the deformation zone during cold rolling

2008 ◽  
Vol 2008 (3) ◽  
pp. 205-209 ◽  
Author(s):  
E. A. Garber ◽  
D. L. Shalaevskii ◽  
I. A. Kozhevnikova ◽  
A. I. Traino
Keyword(s):  
Cold Rolling ◽  
Deformation Zone ◽  
Elastic Region ◽  
Region Length

Determination of limiting and legitimate values of drawing coeffi cient and delta-criterion for deformation zone shape during wire drawing

2021 ◽  
pp. 168-178
Author(s):  
G.N. Gur'yanov
Keyword(s):  
Friction Coefficient ◽  
Safety Factor ◽  
Deformation Zone ◽  
Wire Drawing ◽  
Deformation Parameters ◽  
Deformed State ◽  
Rod Breakage ◽  
Drawing Angle ◽  
Limiting Values

The limiting and legitimate values of the drawing coefficient and delta-criterion Δ for the deformation zone shape depending on the friction coefficient for different models of hardening and the values of the drawing angle and the back-pull stress are determined by numerically solving the corresponding equations. The limiting and legitimate values of the drawing coefficient decrease with increase in the friction coefficient, while the analogous values of the criterion increase. Increase in the safety factor causes decrease in the allowable drawing and increase in the delta-criterion. The limiting and legitimate values of the drawing coefficient decrease from the application of back tension in the absence of strain hardening. The nature of the effect of back tension on the limiting and legitimate values of the drawing coefficient and the delta-criterion depends on the deformation parameters with intensive hardening and significant value of the friction coefficient. The possibility of the absence of limiting values of the drawing coefficient and criterion Δ under hypothetical drawing conditions is shown: intensive hardening of the wire material at low friction coefficient and the calculation of the limiting values of these indicators based on the value of the I.L. Perlin safety factor, equal to 1. The estimation of the reliability of the approximate equality is carried out to determine the nature of the relationship between the criterion Δ and the index of the deformed state. It is shown that with small value of the delta-criterion (Δ < 2) wire breakage at the die exit is not guaranteed, since the limiting value of the drawing coefficient is slightly greater than 1. The drawing production technologist needs assessment of the limiting and legitimate values of the drawing coefficient and delta-criterion for predicting of wire (rod) breakage at given deformation parameters.

scholarly journals DETERMINATION OF THE OPTIMAL SPEED OF THE MANDREL IN THE CONTINUOUS REELING MILL USING NUMERICAL SIMULATION

2017 ◽  
pp. 86-92 ◽  
Author(s):  
Yu. L. Bobarikin ◽  
Ya. I. Radkin
Keyword(s):  
Numerical Simulation ◽  
Numerical Model ◽  
Deformation Zone ◽  
Numerical Experiments ◽  
Strain State ◽  
Stress Strain ◽  
Optimal Speed ◽  
Stress Strain State

A proper numerical model of expanding process on a three roll continuous reeling mill was created and number of numerical experiments of the process of tubes rolling were performed. Based on the analysis of the stress-strain state of a rough tubes deformation zone, optimal speed rates of the mandrel providing the decrease in mill rolls and deterioration of mandrel which direct influences on the quality of rough tubes were determined. 

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