Stressed ? Deformed state of rotating discs and beak-shaped rotors studied by means of electrotensometry

1975 ◽  
Vol 7 (3) ◽  
pp. 355-359
Author(s):  
N. K. Sergeev ◽  
A. V. Anfilof'ev ◽  
A. E. Belyaev
Keyword(s):  
Rotating Discs ◽  
Deformed State

Study of the strained-deformed state of a nonunion fracture model of the distal femoral metaepiphysis in different variants of its fixation

2011 ◽  
Vol 0 (4) ◽  
pp. 72
Author(s):  
Grigoriy Golka ◽  
Anton Bilostotskiy ◽  
Igor Subbota ◽  
Valeriy Sukhoveckiy ◽  
Oleg Fadeev
Keyword(s):  
Fracture Model ◽  
Deformed State

MANUFACTURE INVESTIGATION OF CARTRIDGE WITH BOTTOM-MOST PART FLANGE BY DIRECT EXTRUSION WITH COUNTERPUNCH. REPORT 13. DETERMINATION OF DEFORMED STATE UNDER STRAITENED EXTRUSION IN FOURTH CENTRAL AREA OF PLASTIC DEFORMATION

2020 ◽  
Vol 0 (4) ◽  
pp. 43-51
Author(s):  
A. L. Vorontsov ◽  
◽  
I. A. Nikiforov ◽  
Keyword(s):  
Plastic Deformation ◽  
Plastic Flow ◽  
Central Area ◽  
Direct Extrusion ◽  
Deformed State ◽  
Cumulative Deformation ◽  
The Given ◽  
General Method

Formulae have been obtained that are necessary to calculate cumulative deformation in the process of straitened extrusion in the central area closed to the working end of the counterpunch. The general method of plastic flow proposed by A. L. Vorontsov was used. The obtained formulae allow one to determine the deformed state of a billet in any point of the given area. The formulae should be used to take into account the strengthening of the extruded material.

FEATURES OF THE STRESSED-DEFORMED STATE OF THE SIDE BREEDS IN THE ASSESSMENT OF THE OPERATIONAL STATE OF MINING OPERATIONS

2019 ◽  
pp. 53-64 ◽  
Author(s):  
Vladimir Gogo ◽  
◽  
Alexander Kipko ◽  
Nikolay Vlasenko ◽  
Yuliia Simonova ◽  
...  
Keyword(s):  
Mining Operations ◽  
Deformed State

Reflection of a longitudinal travelling wave from the notch in a rod plunged into viscous liquid

2010 ◽  
Vol 7 ◽  
pp. 129-142
Author(s):  
M.A. Ilgamov ◽  
A.G. Khakimov
Keyword(s):  
Inverse Problem ◽  
Viscous Liquid ◽  
Travelling Wave ◽  
Observation Point ◽  
Reflected Waves ◽  
Damping Characteristics ◽  
Deformed State ◽  
Using Data ◽  
Surrounding Liquid

The article investigates the reflection of a longitudinal damped travelling wave from the transverse notch and its movement along an infinite rod plunged into viscous liquid. The simplest model for the stress deformed state in the notch zone is applied. The solution is found to depend on the parameters of the liquid and damping characteristics in the material of the rod and the surrounding liquid. The solution to the inverse problem makes it possible to define the coordinate of the notch and the parameter that contains its depth and length using data on both the incident and reflected waves at the observation point.

Stress deformed state of a drill string under off-design conditions

2006 ◽  
Vol 4 ◽  
pp. 68-72
Author(s):  
A.G. Khakimov ◽  
Z.Z Sharafutdinov
Keyword(s):  
Mechanical Characteristics ◽  
Drill String ◽  
Modes Of Operation ◽  
Deformed State

The paper gives a methodology for calculating the drill string performance under off-design conditions, including the passage through the interface separating rocks with very different physico-mechanical characteristics, drilling of boulder rocks, and dynamic modes of operation. One of the mechanisms of the destruction of drill string elements and roller cutters is revealed.

Seismic stability of the underground main pipeline

2011 ◽  
Vol 8 (1) ◽  
pp. 275-286
Author(s):  
R.G. Yakupov ◽  
D.M. Zaripov
Keyword(s):  
Laplace Transformation ◽  
Seismic Waves ◽  
Generalized Functions ◽  
Seismic Stability ◽  
Main Pipeline ◽  
Motion Equations ◽  
Numerical Example ◽  
Earthquake Force ◽  
Deformed State

The stress-deformed state of the underground main pipeline under the action of seismic waves of an earthquake is considered. The generalized functions of seismic impulses are constructed. The pipeline motion equations are solved with used Laplace transformation by the time. Tensions and deformations of the pipeline have been determined. A numerical example is reviewed. Diagrams of change of the tension depending on earthquake force are provided in earthquake-points.

scholarly journals Reduction of turbulent skin-friction drag by passively rotating discs

2021 ◽  
Vol 923 ◽  
Author(s):  
Paolo Olivucci ◽  
Daniel J. Wise ◽  
Pierre Ricco
Keyword(s):  
Skin Friction ◽  
Friction Drag ◽  
Rotating Discs

Abstract

scholarly journals Dynamo action between two rotating discs

2021 ◽  
pp. 1-18
Author(s):  
A. Arslan ◽  
A. J. Mestel
Keyword(s):  
Dynamo Action ◽  
Rotating Discs
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