共查询到20条相似文献,搜索用时 140 毫秒
1.
GREEN'SFUNCTIONSOFTWO-DIMENSIONALANISOTROPIC BODY WITH A PARABOLIC BOUNDARY(胡元太)(赵兴华)GREEN'SFUNCTIONSOFTWO-DIMENSIONALANISOTROP?.. 相似文献
2.
沈孝明 《应用数学和力学(英文版)》1994,15(6):561-569
MIXEDCOMPATIBLEELEMENTANDMIXEDHYBRIDINCOMPATIBLEELEMENTVARIATIONALMETHODSINDYNAMICSOFVISCOUSBAROTROPICFLUIDSShenXiao-ming(沈孝明... 相似文献
3.
王怀忠 《应用数学和力学(英文版)》1994,15(12):1169-1175
SPATIAL-TEMPORALDISCRETECOORDINATIONOFFEMANDDIRECTINTEGRALMETHODFORTRANSIENTDYNAMICPROBLEMSWangHuai-zhong(王怀忠)(ShanghaiUniver... 相似文献
4.
THE PROBLEMS OF THE NONLINEAR UNSYMMETRICAL BENDING FOR CYLINDRICALLY ORTHOTROPIC CIRCULA RPLATE(I) 总被引:1,自引:1,他引:0
THEPROBLEMSOFTHENONLINEARUNSYMMETRICALBENDINGFORCYLINDRICALLYORTHOTROPICCIRCULARPLATE(I)QinSheng-Ii(秦圣立)HuangJia-yin(黄家寅)(Quf... 相似文献
5.
NUMERICALSIMULATIONOFTHREEDIMENSIONALTURBULENTFLOWINSUDDENLYEXPANDEDRECTANGULARDUCTNUMERICALSIMULATIONOFTHREEDIMENSIONALTURBU... 相似文献
6.
LARGEDEFLECTIONPROBLEMOFTHINORTHOTROPICCIRCULARPLATEONELASTICFOUNDATIONWITHVARIABLETHICKNESSUNDERUNIFORMPRESSURE(王嘉新)(刘杰)LARG... 相似文献
7.
董文堂 《应用数学和力学(英文版)》1995,16(3):293-299
ANANALYTICALSOLUTIONTOLARGEDEFLECTIONEQUATIONSOFSIMPLY-SUPPORTEDRECTANGULARHYPERBOLOIDALSHALLOWSHELLSOFORTHOTROPICCOMPOSITESD... 相似文献
8.
NUMERICALSIMULATIONFOREVOLUTIONARYHISTORYOFTHREE-DIMENSIONALBASINYuanYi-rang(袁益让);WangWen-qia(王文洽);YangDan-ping(羊丹平)(Departme... 相似文献
9.
MIKUSINSKI'S OPERATORS SOLUTION OF THREE-ORDER LINEAR DIFFERENCE EQUATION WITH VARIABLE COEFFICIENTS
周之虎 《应用数学和力学(英文版)》1994,(1)
MIKUSINSKI'SOPERATORSSOLUTIONOFTHREE-ORDERLINEARDIFFERENCEEQUATIONWITHVARIABLECOEFFICIENTSZhouZhi-hu(周之虎)(AnhuiArchitecturalI... 相似文献
10.
ANAPPLICATIONOFSCHAUDER’SFIXEDPOINTTHEOREMTOTHEEXISTENCEOFSOLUTlONSOFIMPULSIVELYDIFFERENTIALEQUATIONSDongYu-Jun(董玉君),ZouEr-xi... 相似文献
11.
A. P. Shabanov 《Journal of Applied Mechanics and Technical Physics》2009,50(4):684-690
A model for crack growth is proposed based on studies of the variation in the curvature radius at the crack tip during cyclic
loading. Relations are obtained between mechanical material characteristics, crack geometry, and the rate of crack growth
in a structure under cyclic loading.
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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 50, No. 4, pp. 167–175, July–August, 2009. 相似文献
12.
A. D. Zaikin 《Journal of Applied Mechanics and Technical Physics》2006,47(6):886-891
The behavior of a crack under uniaxial tension in the presence of reinforcement is studied. The reinforcing members (riveted
stiffeners) are modeled by point loads. Only four members nearest to the crack are taken into account. It is shown that stiffeners
allow one to arrest a crack and prevent its catastrophic growth. Relations between the geometrical and force characteristics
for which the crack is stabilized are obtained. The stabilization mechanism is discussed.
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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 47, No. 6, pp. 137–143, November–December, 2006. 相似文献
13.
The mechanical model was established for the anti-plane fracture problem of a functionally graded coating–substrate system
with a coating crack inclined to the weak/micro-discontinuous interface. The Cauchy singular integral equation for the crack
was derived using Fourier integral transform, and the Lobatto–Chebyshev collocation method put up by Erdogan and Gupta was
used to get its numerical solution. Finally, the effects of the weak/micro-discontinuity of the interface on SIFs were analyzed,
the “affected regions” corresponding to the two crack tips have been obtained and their engineering significance was discussed.
It was indicated that, for the crack tip in the corresponding “affected region”, to reduce the weak-discontinuity of the interface
and to make the interface micro-discontinuous are the two effective ways to reduce the SIF, and the latter way always has
more remarkable SIF-reduction effect. For the crack tip outside the “affected region”, its SIF is mainly influenced by material
stiffness, and to prevent such a tip from growing toward the interface “softer coating and stiffer substrate” is a more advantageous
combination than “stiffer coating and softer substrate”. 相似文献
14.
Based on the mechanics of anisotropic materials, the dynamic propagation problem of a mode Ⅲ crack in an infinite anisotropic body is investigated. Stress, strain and displacement around the crack tip are expressed as an analytical complex function, which can be represented in power series. Constant coefficients of series are determined by boundary conditions. Expressions of dynamic stress intensity factors for a mode Ⅲ crack are obtained. Components of dynamic stress, dynamic strain and dynamic displacement around the crack tip are derived. Crack propagation characteristics are represented by the mechanical properties of the anisotropic materials, i.e., crack propagation velocity M and the parameter ~. The faster the crack velocity is, the greater the maximums of stress components and dynamic displacement components around the crack tip are. In particular, the parameter α affects stress and dynamic displacement around the crack tip. 相似文献
15.
V. R. Tagirova 《Moscow University Mechanics Bulletin》2009,64(4):86-88
Solutions to the system of equations describing the propagation of hydraulic fracture cracks in a porous medium are obtained
in the traveling wave form. The only sought solution is the separatrix of integral curves on the “penetration depth-crack
width” plane. Some necessary dependencies that should be given at the crack inlet are found for the fluid flow rate and the
fluid pressure. The crack width and the fluid penetration depth are related by power laws in the limiting cases when the crack
propagation processes or the fluid penetration processes are dominant. 相似文献
16.
V. A. Saraikin 《Journal of Applied Mechanics and Technical Physics》1999,40(5):903-907
Equations are derived for stress concentration near a crack of closed contour lying in a plane. A system of one-dimensional
integral equations for the concentration factor is obtained. The right sides of the equations contain the initial approximation—a
solution of the problem of a circular crack whose sides are acted upon by nonaxisymmetric loading.
Mining Institute, Siberian Division, Russian Academy of Sciences, Novosibirsk 630091. Translated from Prikladnaya Mekhanika
i Tekhnicheskaya Fizika, Vol. 40, No. 5, pp. 143–148, September–October, 1999. 相似文献
17.
V. A. Kovtunenko I. V. Sukhorukov 《Journal of Applied Mechanics and Technical Physics》2006,47(5):704-713
For the evolutionary problem describing crack propagation in a solid with allowance for the irreversible work of plastic deformation
due to the crack propagation, a general optimization formulation is proposed and investigated. For the optimum crack, data
on the H2-smoothnesses of the displacement field in the solid and, hence, on the finiteness of the stress at the crack tip, are obtained.
The solvability of the optimization problem (i.e., the existence of an optimum crack) is proved for a curvilinear crack propagation
path specified a priori. For the particular case of a straight path, a generalized criterion of crack growth is proposed.
The question of the choice of a crack propagation path is discussed and a comparison with existing fracture criteria is made.
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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 47, No. 5, pp. 107–118, September–October, 2006. 相似文献
18.
Electroelastic behavior of a cracked piezoelectric ceramics plate subjected to four cases of combined mechanical-electrical
loads is analyzed. The integral transform method is applied to convert the problem involving an impermeable anti-plane crack
to dual integral equations. Solving the resulting equations, the explicit analytic expressions for electroelastic field along
the crack line and the intensity factors of relevant quantities near the crack tip and the mechanical strain energy release
rate are obtained. The known results for an infinite piezoelectric ceramics plane containing an impermeable anti-plane crack
are recovered from the present results only if the thickness of the plate h → ∞.
Biography: LI Xian-fang (1964-) 相似文献
19.
V. V. Mykhas’kiv N. D. Grilitskii I. O. Butrak 《Journal of Applied Mechanics and Technical Physics》2006,47(4):556-563
A three-dimensional wave field formed owing to diffraction of low-frequency waves on a curved crack in an infinite elastic
solid at a large distance from the defect is studied by the method of boundary integral equations. Direction diagrams of the
scattered field versus the excentricity of the crack surface and wavenumber are obtained for different directions of incidence
of planar longitudinal waves onto a gently sloping spheroidal crack.
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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 47, No. 4, pp. 115–123, July–August, 2006. 相似文献
20.
A crack is represented as a continuous set of linear dislocations. Simple analytical expressions are obtained for the potential
and kinetic energies of the environment of moving cracks and the attached mass of cracks for an arbitrary form of the stress
applied to the crack P(x). It is shown that the indicated analytical expressions are bilinear integrals of the functions P(x)
and ∂P(x)/∂x. These integrals are calculated in explicit form for a constant stress over the entire crack length and the stress
due to the action of molecular adhesion forces in a narrow region near the crack openings. It is shown that the calculation
results does not depend on the form of molecular adhesion forces. The proposed approach to describing cracks and calculations
based on it has made it possible for the first time to obtain a complete analytical expression for the limiting crack propagation
velocity in elastic materials as a function of the main mechanical characteristics of such materials.
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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 50, No. 4, pp. 158–166, July–August, 2009. 相似文献