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排序方式: 共有95条查询结果,搜索用时 46 毫秒
1.
Voitsekhovskii A. V. Grigor'ev D. V. Korotaev A. G. Kokhanenko A. P. 《Russian Physics Journal》2004,47(7):764-772
The effects of wide- and narrow- variband layers on the charge-carrier concentration and mobility in the MBE-grown epitaxial CMT structures measured by the Hall-effect method are studied by numerical simulation. The dependence of the relative difference between the experimentally obtained effective values of electrophysical parameters and those of an epitaxial coating on the variband-layer characteristics is discussed. An analysis of this dependence shows that the manner in which the broad-band and narrow-band layers affect the resulting parameters is inequivalent. The calculations suggest that the effect of the wide-band layer on the experimental electrophysical parameters can be neglected. In the case of the narrow variband layer, however, the difference between the electophysical parameters strongly depends on the variband-layer parameters and the concentrations of ionized donor and acceptor centers. 相似文献
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Yu. V. Kokhanenko 《International Applied Mechanics》2001,37(3):317-345
Classes of basic problems (classical problems and new problems derived by partial separation of variables) of the theory of elasticity and three-dimensional linearized stability are formulated in Cartesian coordinates. For each class of problems, the base scheme and the base system of equations are constructed and substantiated. They allow us to write explicitly the global mesh equations corresponding to an arbitrary problem from the class under consideration 相似文献
5.
A. V. Voitsekhovskii A. G. Korotaev A. P. Kokhanenko D. V. Grigor’ev V. S. Varavin S. A. Dvoretskii Yu. G. Sidorov N. N. Mikhailov N. Kh. Talipov 《Russian Physics Journal》2006,49(9):929-933
The dynamics of accumulation of electrically active radiation defects under ion doping of epitaxial Cd
x
Hg
1−x
Te films is studied for various distributions of film composition in the implantation region. The epitaxial films were irradiated
by boron ions at room temperature in the continuous regime, with the dose ranging within 1011−3·1015 cm−2, energy — 20–150 keV, and ion current density — j = 0.001–0.2 μA·cm−2. It is found that the natural logarithm of the introduction rate of electrically active radiation defects linearly depends
on the epitaxial-film composition in the range of mean projected path of implanted ions. An analysis of the experimental data
shows that the dynamics of accumulation of electrically active radiation defects is determined by the epitaxial-film composition
in the implantation region.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 9, pp. 25–28, September, 2006. 相似文献
6.
Yu. V. Kokhanenko 《International Applied Mechanics》2006,42(9):1045-1051
A thin rectangular sandwich plate with isotropic linear elastic layers is considered. The plate is in a plane-strain state
under uniaxial compression. An exact statement of the buckling problem is given. Its approximate solution is found by the
finite-difference method. The concept of base scheme is used to formulate discrete problems in explicit and compact form.
As an example, the critical parameters of the plate are calculated using a computation optimization procedure. Its efficiency
is demonstrated
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Translated from Prikladnaya Mekhanika, Vol. 42, No. 9, pp. 98–105, September 2006. 相似文献
7.
Thermal stresses are determined in a sandwich plate uniformly heated under plane-strain conditions. Linearly elastic isotropic bodies model the plate components. An approximate solution is found by the finite-difference approach. The influence of the coefficients of thermal expansion on the nature of stress concentration regions is studied. 相似文献
8.
S. P. Timoshenko Institute of Mechanics, National Academy of Sciences of Ukraine, Kiev. Translated from Prikladnaya Mekhanika, Vol. 31, No. 3, pp. 3–23, March, 1995. 相似文献
9.
Yu. V. Kokhanenko 《International Applied Mechanics》2005,41(4):381-385
The plane stability problem for a rectangular plate with two symmetric end cracks is solved in three-dimensional formulation. The three-dimensional linearized theory of stability and the finite-difference method are used. The effect of the crack parameter on the critical load is examined__________Translated from Prikladnaya Mekhanika, Vol. 41, No. 4, pp. 47–52, April 2005. 相似文献
10.
Yu. V. Kokhanenko 《International Applied Mechanics》2006,42(7):825-831
The paper studies the three-dimensional stability of an isotropic, linear elastic, rectangular plate under a uniform tensile
load applied to its sides. The concept of free strains is used to reduce the three-dimensional problem to a two-dimensional
one. It is solved using the three-dimensional linearized theory of stability. An approximate solution of the buckling problem
is obtained by the finite-difference method. Numerical results are presented
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Translated from Prikladnaya Mekhanika, Vol. 42, No. 7, pp. 116–123, July 2006. 相似文献