41 Works

The Effectiveness of Polymer-Paraffin Emulsions to Reduce Moisture Loss from Hardening Concrete

Yury Barabanshchikov, Kseniia Usanova, Stanislav Akimov & Zoia Popyvanova

Glass-reinforced plastic roof for mounted elevator shafts

Евгений Васюткин & Mariya Shahova

Subsoil Stabilized by Polyurethane Resin Injection: FEM Calculation

Mohanad Sabri & Konstantin Shashkin

Condition Load Effect Factor of Profile Steel in Lightweight Steel Concrete Structures

Vladimir Rybakov

Facade Systems Modal Analysis in Consideration its Own Dynamic Characteristics of the Frame

Vladimir Rybakov, Konstantin Deriugin, Marina Pushkarskaya & Karolina Urmanceva

Physical fundamentals of thermomechanical processing in ultrafine-grained metallic materials manufacturing

А.I. Rudskoi, G.Е. Коdzhaspirov, J. Kliber, Ch. Apostolopoulos & D.A. Kitaeva
The processing of metallic materials through the application Thermomechanical Processing (TMP) has now become of major importance in the world research and industrial companies. A great attention is paid to study of mechanism TMP applied to different techniques and technological processes providing ultrafine-grained state of metal materials including submicro – and nanocrystalline ones. The main development in terms of obtaining bulk metallic materials received in the recent years, various schemes of TMP of metallic materials,...

Selective laser melting of copper alloy

I.A. Polozov, E.V. Borisov, V.Sh. Sufiiarov & A.A. Popovich
Additive Manufacturing (AM) of copper and its alloys is a promising way to produce parts with complex geometries without tooling. One of the AM processes is Selective Laser Melting (SLM) technology that uses a laser beam to fuse powder layers to obtain a final part. Laser processing of copper is considered to be a challenging task due to its high thermal conductivity and poor laser absorptivity. In the present work, Cu-Cr-Zr-Ti alloy powder has been...

Генерирование базовых инвестиционных целей предприятия в стратегической перспективе

Николай Дмитриевич Дмитриев & Людмила Эдуардовна Дубаневич
Современные условия хозяйствования обусловливают необходимость привлечения инвестиционных вложений с целью максимизации инвестиционной эффективности. Для ее поддержания требуется определиться с инвестиционными целями предприятия. Данное исследование направлено на рассмотрение теоретических основ процесса генерирования базовых инвестиционных целей. Построение объективного исследования требует решения задач по выработке требований к генерированию стратегических целей, учитывая социальные тенденции общества. Предложено рассмотрение инвестиционной деятельности как с целью получения экономической эффективности, так и с целью развития социальных эффектов. Выявлено, что именно формирование целевых установок на...

EXPERIMENTAL STUDY AND MODELING OF PRE-DEFORMATION EFFECT ON AUSTENITE TO FERRITE TRANSFORMATION

A.A. Vasilyev, D.F. Sokolov, S.F. Sokolov & A.A. Zisman
Transformation kinetics of undeformed and deformed austenite during continuous cooling has been investigated on several industrial steels. Dimensions of both prior austenite grains and ferrite grains in ferrite-pearlite structures obtained for various states of parent austenite and cooling rates were determined. Based on the obtained experimental data a physically motivated model is formulated for the ferritic transformation with allowance for the effects of deformation and concurrent recovery of austenite. Under consideration is the deformation influence...

Growth of thick gallium oxide on the various substrates by halide vapor phase epitaxy

A.V. Kremleva, Sh.Sh. Sharofidinov, A.M. Smirnov, E. Podlesnov, M.V. Dorogov, M.A. Odnoblyudov, V.E. Bougrov & A.E. Romanov

Double Seismic Insulation System of Turbine Unit Foundation

Vladimir Tarasov

FRP helical micro screw pile with cast iron pile cap: Review

Nikolai Ivanovich Vatin, Renat Nurmukhametov, Ilizar Mirsayapov, Евгений Васюткин, Dmitriy Burin & Sergey Vasyutkin

Bearing Capacity of Reinforced Concrete T-beams with a Steel Profile

Vladimir Korsun, Георгий Швец & Natalia Vinogradova

Natural isomers of fullerenes from C30 to C40

Alexander I. Melker, Aleksandra N. Matvienko & Maria A. Krupina
We have systematized possible ways of forming the isomers of midi-fullerenes, namely C30, C32, C34 C36, C38 and C40. Similar to the isomers of midi-fullerenes from C20 to C28, there are three the most natural mechanisms of their formation: 1) Embedding carbon dimers into initial fullerenes; 2) Fusion of carbon cupolas having the same symmetry; and 3) Fusion of fullerenes having compatible symmetry. The energies of the fullerenes calculated through the use of molecular mechanics...

3D finite element, connected with orthogonal finite functions, in modeling and investigation of elastic homogeneous and heterogeneous material

V.L. Leontiev & I.V. Efremenkov
A novel 2D finite element (FE) associated with orthogonal finite functions (OFF, orthogonal splines) was developed for the ANSYS software and was tested early. The expansion of this method is presented here. The novel 3D FE, connected with 3D OFF is proposed for modeling and investigation of the stress-strain state of homogeneous and heterogeneous elastic bodies. The accuracy of the solutions obtained with this 3D FE is as high as for the classic ANSYS 3D...

Natural isomers of fullerenes from C20 to C28

Alexander I. Melker & Aleksandra N. Matvienko
We have systematized possible ways of forming the isomers of midi-fullerenes, namely C22, C24, C26 and C28. There are three the most natural mechanisms of their obtaining: embedding carbon dimers into initial fullerenes; fusion of carbon cupolas having the same symmetry; fusion of fullerenes having compatible symmetry. The minimum energy fullerenes are obtained through the use of the first mechanism. It is worth noting that these fullerenes conserve the topological three-fold symmetry. At the same...

Registration Year

  • 2020
    41

Resource Types

  • Text
    41

Affiliations

  • Peter the Great St. Petersburg Polytechnic University
    41
  • Ioffe Institute
    3
  • University of Patras
    2
  • ITMO University
    2
  • Saint-Petersburg State University of Technology and Design
    1
  • Montreal Economic Institute
    1
  • Graz University of Technology
    1
  • Riga Technical University
    1
  • Tashkent Institute of Irrigation and Agricultural Mechanization Engineers
    1
  • Ulyanovsk State University
    1