Loading...
Toggle navigation
Home
About
About Journal
Journal Honor
Database Inclusion
Editorial Board
Journal
Current Issue
Featured Article
Just Accepted
Archive
60th Anniversary
Download
Dynamics
Contacut
Science Fund
中文
Journals of CSTAM
力学学报
Acta Mechanica Sinica
力学与实践
力学进展
Theo.& Appl.Mech.Letters
固体力学学报
Acta Mech.Solida.Sin
爆炸与冲击
计算力学
实验力学
工程力学
动力学与控制
岩土工程学报
力学季刊
地震工程与工程振动
世界地震工程
等离子体科学和技术
Author Center
Publication Ethics
Author's Guide
Author's Login
Review Login
Review's Guide
Peer Review Login
Editorial
EditorinChief
Editor Work
Office Work
Reader Center
Reader's Guide
Subscription
IPAD Mobile Reading Platform
Member of CSTAM
User Name:
Pass Word:
Dynamics
More>>
Academic Activity Program
Table of Content
25 November 1998, Volume 30 Issue 6
Previous Issue
Next Issue
Research paper
IMPLICIT FINITE VOLUME METHOD FOR THREEDIMENSIONALNAVIERSTOKES COMPUTATION
,
1998, 30(6): 641647. DOI:
10.6052/04591879199861995172
Asbtract
(
1936
)
PDF
(488KB) (
1040
)
Related Articles

Metrics
In this study, a new fullyimplicit finitevolume numerical algorithm is developed tosolve the timedependent NavierStokes equations using NND finite difference scheme. Both inviscid and viscous fluxes across cell boundaries are treated implicitly. The present work emphasizesthe finitevolume approximation of the integral form of the conservation laws. The integral approach enhances both stability and accuracy of the algorithm. Nonequilibrium reacting hypersonicionizing air viscous flows over the reentry v...
GALERKIN SOLUTIONS OF LAMINAR FLOW IN HELICAL ELLIPTICAL PIPES
,
1998, 30(6): 648655. DOI:
10.6052/04591879199861995173
Asbtract
(
1312
)
PDF
(423KB) (
578
)
Related Articles

Metrics
Helloal pipes are used extensively in industrial applications and the secondary flow affects the various aspects of the fluid in them considerably. For this reason, many efforts have been made in this field and mostly focused on planar curved pipe flows. Furthermore, since the circular crosssection is a special elliptical crosssection, the researches of the flow in elliptical pipes must have more profound significant.In terms of tensor analysis technique, the NavierStokes equations in a curvilinear coord...
AN EXPERIMENTAL STUDY ON SOME FEATURES OF TURBULENT FRONTS IN STRATIFIED FLUID
,,
1998, 30(6): 656661. DOI:
10.6052/04591879199861995174
Asbtract
(
1618
)
PDF
(490KB) (
591
)
Related Articles

Metrics
Some features on the turbulent fronts were studied experimentally. The turbulence was produced by towing a grid with vertical square bars through a tank filled with linear stratified fluid. The shapes and behaviors of front motions were observed and recorded by shadowgraph and photograph. The data and paxameters of fronts were collected and computed by using an im agedigitizedmicrocomputer processing system from the traces of fronts.The variation of front pattern with time was examined. The front rapid co...
NUMERICAL INVESTIGATION OF PRESSURE FLUCTUATIONS WITHIN CRACK LAYERS OF LOWER SURFACES OF SLABS
,
1998, 30(6): 662671. DOI:
10.6052/04591879199861995175
Asbtract
(
1287
)
PDF
(528KB) (
487
)
Related Articles

Metrics
Fluctuating pressure and its propagation within cracks under bed slabs in a plungepool downstream of a high dam are two main factors which cause destruction and scour of bed slabs in a plunge pool. The impingement by a free jet on the slabs in a plunge pool downstream of a large dam creates intense pressure flutuations within the cracks under slabs and causes the bed slabs to be unstable.The instantaneous differences of pressure on the upper and the lower surfaces of bed slabs can generate transient uplift ...
NONPROMGATING SOLITON AND SURMCE TENSION
1998, 30(6): 672675. DOI:
10.6052/04591879199861995176
Asbtract
(
1426
)
PDF
(295KB) (
818
)
Related Articles

Metrics
The contradictory between experiments and theory about the effect of the surface tension on the nonpropagating soliton was discussed in this article. Since the lateral wave length was short, the effect of the surface tension on the nonpropagating soliton was discussed by Miles and Zhou. They modified the relation between the frequency and the wave length by the surface tension, and brought it into higher order. According to the theoritical analysis, Zhou divided the khσ plane into three regions (Fig.1), ...
A CHAOTIC ATTRACTOR IN THE NORMAL FORM NETWORK
,,
1998, 30(6): 676681. DOI:
10.6052/04591879199861995177
Asbtract
(
1199
)
PDF
(344KB) (
599
)
Related Articles

Metrics
Biological experiments of mammalian brain have shown that real neural systems exhibit a range of phenomena such as oscillations, phaselocking and even chaos. The chaotic behaviors simulate the information processing mechanisms of the real neural systems at a higher level. In this paper the bifurcation and chaos of the high order correlation networks will be studied.In some previous discussions about the high order correlation neural networks, we learned that the high order correlation networks expected to ...
EXPERIMENTS AND THEORETIC ANALYSIS FOR THE FRACTURE OF BRITTLE MATERIALSUNDER BIAXIAL STRESS
,
1998, 30(6): 682689. DOI:
10.6052/04591879199861995178
Asbtract
(
1360
)
PDF
(748KB) (
1061
)
Related Articles

Metrics
The fracture behavior of brittle materials under biaxial plane stress, especially theinfluence of the stress parallel to the crack plane on critical fracture parameters, was investigated by means of thermomechanical method. Biaxial and uniaxial tension tests were performed with thin glass and zirconia disk specimens. The aims of this study is to clarify the fracture dependenceof brittle material in plane stress state and their difference between biaxial and uniaxial tension,baized on experimental and analyt...
CHAOTIC AND HYPERCHAOTIC BEHAVIORS OF VISCOELASTIC RECTANGULAR PLATES UNDER TRANSVERSE PERIODIC LOAD
,
1998, 30(6): 690699. DOI:
10.6052/04591879199861995179
Asbtract
(
1370
)
PDF
(675KB) (
803
)
Related Articles

Metrics
On the basis of the hypotheses of the Karman theory for elastic thin plates and the Boltzmann laws for linear isotropic viscoelastic materials, the constitutive equations for viscoelasticthin plates airs derived by using the "structure function" introduced in this paper. The initialboundary value problem of nonlinear dynamical analysis for viscoelastic thin plates is formulatedby using the procedure that is similar to the process deriving the Karman theory for elastic thinplates. If Poisson ration v of a ma...
CONTACT PROBLEM IN BUCKLING ANAlYSIS OF DELAMINATED LAMINATES
,,Zhenhan Yao,,
1998, 30(6): 700710. DOI:
10.6052/04591879199861995180
Asbtract
(
1263
)
PDF
(862KB) (
698
)
Related Articles

Metrics
In this paper, the buckling analysis of laminates with an embedded delaminationhas been conducted by employing the finite element method based on the Mindlin plate theory.To avoid the overlap between two delaminated layers in the buckling mode, an effective solutionmethod has been put forward to deal with the contact problem in the buckling analysis. In thismethod, an iterative updating process incorporating the firstorder sensitivity gnalysis and thequadratic programming technique has been proposed to com...
PARAMETERS FOR FINITE ROTATIONAL TENSOR AND ITS APPLICATION IN MULTIBODY SYSTEMS
,
1998, 30(6): 711718. DOI:
10.6052/04591879199861995181
Asbtract
(
1298
)
PDF
(438KB) (
688
)
Related Articles

Metrics
Large deformation of components in multibody systems is usually caused by relativelylarge rotation between the particles in the component. Finite rotational tensors are used to describelarge rotation. To model the motion of the component with finite element methods, the finiterotational tensor must be approximated by nodal paxameters and shape functions. What kind ofparameters are used to represent finite rotational tensor is a fundamental aspect in formalism ofmultibody systems. Euler parameters are most c...
A DYNAMIC CONTROL MODEL OF PIEZOELECTRIC CANTILEVERED BEAMPLATE BASED ON WAVELET THEORY
,
1998, 30(6): 719727. DOI:
10.6052/04591879199861995182
Asbtract
(
1341
)
PDF
(491KB) (
762
)
Related Articles

Metrics
Based on the scaling function transform of the Daubechies wavelet theory, an onetoone explicit relation betWeen electric signals measured in piezoelectric sensors and denectionof the plates is established in this paper, which overcomes the deficiency of conventional methodof modal analysis which sometimes leads to failure of measuring deformation of the plate whenthe inverse matrix in the method does not exist. After that, a dynamic control model for thepiezoelectric plates with feedback of negative deflec...
TIME DOMAIN BEM FOR WAVE PROPAGATION PROBLEMS IN ANISOTROPIC MEDIA AND ITS EXPERIMENTAL VERIFICATIONS
,,,
1998, 30(6): 728736. DOI:
10.6052/04591879199861995183
Asbtract
(
1225
)
PDF
(588KB) (
549
)
Related Articles

Metrics
Attributed primarily to the reduction of dimensionality of problems, high accuracyof results and automatic consideration of the radiation conditions at infinity, Boundary ElementMethod (BEM)has become increasingly popular for the solution of linear elastodynamic problems.Time domain Boundary Element Method for wave propagation problems in anisotropic media iseffectively applicable in the research fields of earthquake engineering, rock dynamics and compositedynamics. Due to the complexity of time domain fund...
TURBULENT BOUNDARY LAER STUDY OF FLOW BEHINDSMALL OBSTACLES PLACED ON THE WALL
,,
1998, 30(6): 737742. DOI:
10.6052/04591879199861995184
Asbtract
(
1483
)
PDF
(455KB) (
776
)
Related Articles

Metrics
The solid wall turbulent shear flow behind twodimensional small obstacles placed onthe plane is numerically simulated using RNG Kε model and standard Kε model. The model ofsmall obstacles used in this study have nine types, such as plate, square and cylinder et al. A finitevolume method with the collocated variable arrangement employing orthogonal grids was used tosolve the equation system. The pressure and mean velocity, turbulent energy, dissipation rate ofturbulent energy are coupled by SIMPLE algori...
INTERACTIONS OF THE RIGIDRODLIKE POLYMER AND THE COHERENT STRUCTURES IN A MIXING LAYER
,
1998, 30(6): 743747. DOI:
10.6052/04591879199861995185
Asbtract
(
994
)
PDF
(418KB) (
748
)
Related Articles

Metrics
The spectral method, ie. Galerkin method and the pseudospectral method wereused to solve the diffusion equation of the distribution function in configurational space for amultibeadrod model and NS equation respectively. The properties of the coherent structure ina plane mixing layer with rigidrodlike polymer additives and the most probable orientations ofthe multibead rods were obtained simultaneously. The results indicate that adding polymer tothe Newtonian fluid will make flows have stronger vorticity...
THE EQUIVALENT ROBUST POLE ASSIGNMENT IN VIBRATION CONTROL DESIGN
,,
1998, 30(6): 748753. DOI:
10.6052/04591879199861995186
Asbtract
(
1267
)
PDF
(431KB) (
823
)
Related Articles

Metrics
In this paper, we consider the vibration controllable system where A ∈ R2n×2n,B ∈ R2n×m and X ∈ R2n×1, U ∈ Rm×1,, are the state and input of the above system. If we usestate feedback, that is, if we set U = FX, in which F ∈E Rp×2n, then we haveX = (A + BF)XFrom the control theory we know that if the system is controllable, then for any given numbersλ1，λ2，……λ2n. there exists a matrix F, such that matrix (A + BF) has eigenvalues λ1,λ2,… λ2n.Robust control is necessary for structures due to the inherent modeli...
DISCUSSION ON "APPLICATIONS OF A SECONDORDERUPWIND TVD SCHEME TO NONEQUILIBRIUM HYPERSONICFLOWS AROUND BLUNTBODY
,
1998, 30(6): 754756. DOI:
10.6052/04591879199861995187
Asbtract
(
907
)
PDF
(185KB) (
765
)
Related Articles

Metrics
REPLY TO DISCUSSION ON“ APPLICATIONS OF A SECONDORDER UPWIND TVD SCHEME TO NONEQUILIBRIUMHYPERSONIC FLOWS AROUND BLUNTBODY”
1998, 30(6): 757760. DOI:
10.6052/04591879199861995188
Asbtract
(
884
)
PDF
(307KB) (
792
)
Related Articles

Metrics