5 Works

On the deformation of a composite rod in the framework of gradient thermoelasticity

А.О. Vatulyan & S.А. Nesterov
The gradient thermoelasticity problem for a composite rod based on the applied one-parameter model is investigated. To find the Cauchy stresses, the Vishik-Lyusternik asymptotic approach is used, taking into account the presence of boundary-layer solutions in the vicinity of the rods' boundaries and interface. A new dimensionless parameter equal to the ratio of the second rod length and the gradient parameter are introduced. Simplified formulas are constructed in order to find the distribution of the...

STUDY OF THE INFLUENCE OF TECHNOLOGICAL FEATURES OF LASER STEREOLITHOGRAPHY PROCESS ON FUNCTIONAL CHARACTERISTICS OF PARTS

V.V. Vnuk, E.V. Ippolitov, S.V. Kamaev, M.A. Markov, A.A. Nikulenko, M.M. Novikov & S.A. Cherebylo
The article reports on the effect the building orientation of the part, produced by laser stereolithography technology, has on achieving its best functional characteristics. Based on the example of IPLIT-3 and IPLIT-4 resins, the study shows that in contrast to the literature data on other commercial photocurable resins (PCRs), there is no definite advantage of the vertical orientation of the test samples compared to their horizontal orientation for obtaining the best values of the manufactured...

Digital core simulator - a promising method for developming hard-to-recover oil reserves technology

V.B. Betelin, V.A. Galkin, A.V. Shpilman & N.N. Smirnova
Territory of Russia, which occupies 12.8% of the Earth's territory, contains 12-13% of the forecast resources, and about 12% of the discovered oil reserves. Russia's proven oil reserves amount to approximately 13.9 billion tons of oil as of January 1, 2017 (~101 billion barrels). Oil recovery factor for proved reserves is ~17%. The increase of oil recovery factor represents a huge stockpile for raising the level of oil production in the country at low costs....

Deformation instability in crystalline alloys: Luders bands

G.F. Sarafanov & Yu.G. Shondin
A mechanism of localization of plastic deformation at high temperatures is investigated in the framework of the autowave model. A model of the formation and propagation of Luders bands is proposed. It is established that a Luders band is a wavefront of the plastic deformation rate. From this article's point of view, the conditions for the formation of a Luders band are decisive for the interpretation of the fluidity serration. The critical value of the...

Numerical optimization of the cantilever piezoelectric generator

A.N. Soloviev, V.A. Chebanenko, I.V. Zhilyaev, A.V. Cherpakov & I.A. Parinov
In this paper, we consider the adequacy of the use of the straight normal hypothesis in the applied theory for the calculation of a cantilever-type piezoelectric generator that takes into account the incomplete piezo-element coating of the substrate, which was obtained earlier, and a numerical optimization procedure for piezoelectric generator is given, taking into account critical failure stresses.

Registration Year

  • 2021
    3
  • 2020
    2

Resource Types

  • Text
    5

Affiliations

  • Russian Academy of Sciences
    5
  • Central Aerohydrodynamic Institute
    1
  • Don State Technical University
    1
  • Lomonosov Moscow State University
    1
  • Southern Federal University
    1
  • University of Applied Sciences and Arts Northwestern Switzerland
    1
  • Nizhny Novgorod State Pedagogical University
    1