Boundary Conditions in Problems of Plane Plastic Flow

Tomlenov, A. D.

doi:10.1007/978-1-4757-0070-1_1

Cited by 5 publications

(5 citation statements)

References 3 publications

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“…The notch in the central part of the plate leads to a decreased value of σresin that region. The results presented in the cartograms and graphs do not contradict the theory of plastic deformation of metals [5]. The nature of the residual stresses during elastoplastic bending indicates the equality of the moments of loading and unloading of the samples.…”

Section: Resultssupporting

confidence: 51%

Use of Magnetic Anisotropy Method for Assessing Residual Stresses in Metal Structures

Krivokrysenko

Popov

Bolobov

et al. 2020

KEM

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A series of experiments on measuring of difference between the main mechanical stresses (DPMS) was carried out using a mechanical stress scanner based on the magnetoanisotropic method. The magnitude of the DPMS is fixed when a magnetic field is induced on a carbon steel plate under uniaxial tension. A direct proportional relationship is shown between the magnitude of the DPMS signal recorded by the scanner and the magnitude of tensile stresses in the plate in the region of elastic deformation of steel. Measurement of the DPMS signal in the central part of similar plates previously subjected to elastic-plastic bending showed that positive values of the signal are fixed in the surface layers of the metal on the inside of the plate, which corresponds to tensile residual stresses, while the negative ones concentrate at the external surface, which corresponds to compressive stresses. A transverse incision on a curved plate from the inside leads to a decrease in the value of the signal of the DPMS, which indicates a decrease in the level of residual stresses in the metal. The values of the DPMS signal in the central part of the curved plate, recalculated using the established calibration dependence on the value of the residual stresses, were compared with the values of the stresses established by calculation, based on the Henki’s theorem on the unloading of an elastic-plastic body. A satisfactory convergence was obtained between the experimental and calculated data.

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Section: Resultssupporting

confidence: 51%

Use of Magnetic Anisotropy Method for Assessing Residual Stresses in Metal Structures

Krivokrysenko

Popov

Bolobov

et al. 2020

KEM

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“…Since the process of cutting is conducted it plastic deformation of metal, coefficient of plastic friction µT characterizes friction of single grain with plastically deformed material. In accordance with works [4,9] coefficient of plastic friction can fluctuate from 0 to 0,5. Detail surveys of interaction of model of single grain on ideal rigid-plastic half-space by method of sliding lines are given in work [4].…”

Section: Granularitysupporting

confidence: 60%

“…3) is formed in front of it (grain) that can be transformed into shavings under certain conditions. Plastically extruded material flowing around the grain without separation of main mass forms the roll by the aisle sides [4,9].…”

Section: Granularitymentioning

confidence: 99%

Theory of Formation of Edge’s Surface Roughness Finished by Radial Polymer-Abrasive Brushes

Podashev

2021

MSF

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Formation of roughness during treatment by polymer-abrasive brushes occurred as a result of interaction of cutting micro-relief with processed surface. The cutting micro-relief of abrasive instrument is described in the form of random process with normal distributional law. When calculation of roughness, the depths of penetration of cutting lugs in processed material as well as regularity of changing of radial radius of rounding of peaks of cutting lugs from modes of treatment are taken into consideration. Set are relations of roughness of processed edge from modes of treatment (deformations of instrument, cutting velocities, feeding) as well as from constituent cutting force. It is proved that usage of polymer-abrasive brushes for rounding of edges faces all requirements of aviation industry on roughness of processed edges.

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“…1 applicably to a hard fragment approximated to a sphere. Assume that in the absence of friction, the normal-pressure distribution on the spherical contact matches A.D. Tomlenov's formula [1].…”

Section: The Main Partmentioning

confidence: 99%

Mathematical Modeling of High-Energy Pressing Process of Graphite-Plastic Composition

Самодурова

Ogarkov

Platov

2020

SSP

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Boundary Conditions in Problems of Plane Plastic Flow

Cited by 5 publications

References 3 publications

Use of Magnetic Anisotropy Method for Assessing Residual Stresses in Metal Structures

Use of Magnetic Anisotropy Method for Assessing Residual Stresses in Metal Structures

Theory of Formation of Edge’s Surface Roughness Finished by Radial Polymer-Abrasive Brushes

Mathematical Modeling of High-Energy Pressing Process of Graphite-Plastic Composition

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