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排序方式: 共有486条查询结果,搜索用时 31 毫秒
1.
Radchenko P. A. Batuev S. P. Radchenko A. V. 《Journal of Engineering Physics and Thermophysics》2022,95(1):90-96
Journal of Engineering Physics and Thermophysics - A numerical investigation has been made into the interaction of slender (5–20 calibers) steel cylinder strikers with orthotropic compost... 相似文献
2.
3.
Michael Bratychak Mihailo Bratychak Witold Brostow Olena Shyshchak 《Materials Research Innovations》2002,6(1):24-30
Oligomers containing peroxy groups have been synthesized on the basis of epoxides reacting with tert–butylhydroperoxide in the presence of boron trifluoride etherate. Dependence of reaction rates upon the quantity of catalyst,
temperature and also nature of hydroperoxide has been investigated: A kinetic equation for the process has been formulated
and also a kinetic scheme for the reaction taking into account the presence of boron trifluoride etherate is proposed. Structures
of the synthesized peroxy oligomers have been confirmed by IR- and NMR-spectroscopy. The reaction initiating properties of
the oligomers so synthesized were studied using as the example the styrene polymerization reaction.
Electronic Publication 相似文献
4.
A problem of deformation of a curved shell loaded by internal pressure, axial force, and temperature difference is discussed. Physical equations are derived whereby the displacements and angles of rotation of the line of centers of mass of cross sections of a shell are related to loading parameters. A general constitutive set of equations for a curved element during its deformation is given. Using a method of initial parameters, an analytical solution is obtained for the differential equations for displacements and angles of rotation of the center line allowing for the action of distributed forces and moments. 相似文献
5.
Stress State of Bent Buried Pipelines 总被引:1,自引:0,他引:1
The authors consider edge effects in buried pipelines that occur in the region of joining of a straight buried pipe and a bent insert (factory bend, elbow, or an elastically bent segment). The action of those effects results in the appearance of additional bending moments, which are proportional to the difference between the axial force in an infinite straight pipeline and that in a closed-end pipe, and depend on the geometrical parameters of the pipeline and physical-mechanical characteristics of the soil. Specific examples of analysis of elastic interaction of a pipeline with the soil for pipe bends with various radii of the bend arc are offered. It is shown that additional bending stresses may exceed appreciably the stresses from the axial force, and therefore, they should be taken into account when designing and building pipelines. The solution for an elastically bent segment has been obtained and analyzed. 相似文献
6.
S. I. Glinchak Yu. A. Egorov R. R. Aliev E. D. Radchenko B. K. Nefedov N. A. Grigor'ev 《Chemistry and Technology of Fuels and Oils》1992,28(3):175-177
Translated from Khimiya i Tekhonologiy Topliv i Masel, No. 3, pp. 33–34, March, 1992. 相似文献
7.
V. G. Radchenko V. M. Semenkov 《Power Technology and Engineering (formerly Hydrotechnical Construction)》1992,26(10):685-691
Geosynthetic materials in the form of geomembranes, geotextiles, geonets, geomats, geocomposites, etc., are used widely in modern dam construction. The article describes structural elements of dams in which various types of geosynthetics are used and those functions which geosynthetics perform in these elements.Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 10, pp. 50–54, October, 1992. 相似文献
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9.
S. I. Oreshkin V. N. Mantsevich D. A. Muzychenko A. I. Oreshkin V. I. Panov I. V. Radchenko 《Instruments and Experimental Techniques》2007,50(1):129-132
A tecnique for cleaving semiconductor single crystals under ultrahigh-vacuum conditions is proposed. A system for in situ cleavage of samples for ultrahigh-vacuum scanning tunneling microscope (STM) has been developed. STM studies of the surfaces of InAs single crystals with n and p-type bulk conduction have been performed on an Omicron ultrahigh-vacuum facility. 相似文献
10.
V. L. Kvanin N. T. Balikhina P. I. Krasnoshchekov V. P. Radchenko A. F. Fedotov 《Journal of Engineering Physics and Thermophysics》2006,79(5):905-914
Two-dimensional, nonstationary heat-conduction problems in a system of four finite bodies with an internal mobile heat source
of the first kind (burning front) have been solved by the finite-element method. The influence of basic technological factors
on the temperature-field parameters in the process of synthesis of TiB-40% Ti alloys has been investigated. It has been shown
that for a real technological cycle the temperature field in a blank and a sand shell can be considered to be stationary and
homogeneous.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 79, No. 5, pp. 64–73, September–October, 2006. 相似文献