Zobrazeno 1 - 10
of 83
pro vyhledávání: '"E. N. Sher"'
Autor:
E. N. Sher
Publikováno v:
Interexpo GEO-Siberia. 2:29-37
The paper describes computational model variants of penetration dynamics of a wedge-shaped tool in rock mass. The computation uses the quasi-static approximation of penetration resistance forces obtained preliminarily in 2D and 3D formulations. The s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e23cab700887b53437d2f49e3bccf58
https://doi.org/10.33764/2618-981x-2022-2-4-29-37
https://doi.org/10.33764/2618-981x-2022-2-4-29-37
Autor:
E. N. Sher
Publikováno v:
Физико-технические проблемы разработки полезных ископаемых. :85-94
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c63a3a5050ba4e20de0e7ccd37a802e
https://doi.org/10.15372/ftprpi20210608
https://doi.org/10.15372/ftprpi20210608
Autor:
E. N. Sher
Publikováno v:
Journal of Mining Science. 56:914-924
The article presents the analytical model and calculation results on fracture growth in layered rock mass during blasting and hydraulic fracturing in oil reservoirs. The stress state of fractured elastic rock mass is found using 3D boundary element m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27b839c4f0fd1f1d7580036bdbac938b
https://doi.org/10.1134/s1062739120060046
https://doi.org/10.1134/s1062739120060046
Autor:
E. N. Sher, A. G. Chernikov
Publikováno v:
Journal of Mining Science. 56:512-517
The article presents the model study into determination of block medium structure parameters by the seismic sounding method. The modeling was performed on a fragment of a brick wall. The wall was subjected to impulsive loading, and oscillograms of vi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a45ef668bb75ffdc89fe22ada74939df
https://doi.org/10.1134/s1062739120046800
https://doi.org/10.1134/s1062739120046800
Autor:
E. N. Sher
Publikováno v:
Journal of Applied Mechanics and Technical Physics. 58:933-938
Numerical algorithms have been developed to determine the shape and dimensions of radial cracks formed during confined explosions of linear charges in a monolithic rock massif at a great depth and near its surface. The influence of the charge length
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f89eb718e3f573c34040a8adbd8b2a4
https://doi.org/10.1134/s0021894417050200
https://doi.org/10.1134/s0021894417050200
Publikováno v:
Кардиоваскулярная терапия и профилактика, Vol 22, Iss 4S (2024)
Aim. To analyze the specifics of residency training in the specialty 31.08.54 "General practice (Family Medicine)" at the medical university.Material and methods. Theoretical (search and analysis of available full-text articles in the Elibrary databa
Externí odkaz:
https://doaj.org/article/b5f24704238347c5a02c17dbb0e494c9
Publikováno v:
Российский кардиологический журнал, Vol 29, Iss 1 (2024)
The problem of rational management of patients with heart failure (HF) remains extremely relevant due to its increasing incidence and poor prognosis. Based on current guidelines, therapy for patients with HF involves systematic and long-term use of m
Externí odkaz:
https://doaj.org/article/2188a131808f4333a1f74315db4c0e3a
Publikováno v:
Journal of Mining Science. 52:662-669
Under computational investigation is the process of sequential growth of hydrofractures under conditions of plane strain. The working fluid is perfect and viscous. The authors analyze influence exerted on parameters and trajectories of growing fractu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84dd6c935efe734ef4df43df8ac45ee2
https://doi.org/10.1134/s1062739116041058
https://doi.org/10.1134/s1062739116041058
Autor:
E. N. Sher, V. P. Efimov
Publikováno v:
Journal of Mining Science. 51:1108-1112
The authors have undertaken experimental and theoretical modeling of fracture growth under the penetration of rigid wedge in brittle rock. The test specimens were made of organic glass to facilitate measurement of size and shape of a fracture. The we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::330925672463c86d1577e9e100d1ec49
https://doi.org/10.1134/s1062739115060368
https://doi.org/10.1134/s1062739115060368
Publikováno v:
Journal of Applied Mechanics and Technical Physics. 56:688-697
A model of a medium consisting of parallel layers of elastic rectangular blocks separated by deformable viscoelastic interlayers is considered. The model is proposed for describing the lowfrequency part of the spectrum in waves propagating in media w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::efa9e382470c99ed8b3c10408e643c03
https://doi.org/10.1134/s0021894415040161
https://doi.org/10.1134/s0021894415040161