2003 Vol. 24, No. 8

Display Method:
Stability Analysis in Spatial Mode for Channel Flow of Fiber Suspensions
LIN Jian-zhong, YOU Zhen-jiang
2003, 24(8): 771-778.
Abstract(2488) PDF(529)
Abstract:
Different from previous temporal evolution assumption,the spatially growing mode was employed to analyze the linear stability for the channel flow of fiber suspensions.The stability equation applicable to fiber suspensions was established and solutions for a wide range of Reynolds number and angular...
Bifurcation and Chaos of the Circular Plates on the Nonlinear Elastic Foundation
QIU Ping, WANG Xin-zhi, YEH Kai-yuan
2003, 24(8): 779-784.
Abstract(2438) PDF(676)
Abstract:
According to the large amplitude equation of the circular plate on nonlinear elastic foundation,elastic resisting force has linearitem,cubic nonlinearitem and resisting bend elasticitem.Anonlinear vibration equation is obtained with the method of Galerkin under the condition of fixed boundary.Floque...
Aerodynamic Design Method of Cascade Profiles Based on Load and Blade Thickness Distribution
YAO Zheng, LIU Gao-lian
2003, 24(8): 785-790.
Abstract(2569) PDF(613)
Abstract:
Acascade profile design method was proposed using the aerodynamic load and blade thickness distribution as the design constraints,which were correspondent to the demands from the aerodynamic characteristics and the blade strength.These constraints,together with all the other boundary conditions,were...
On the Asymptotic Behaviour of Solutions of Certain Fifth-Order Ordinary Differential Equations
Cemil Tun
2003, 24(8): 791-798.
Abstract(2435) PDF(593)
Abstract:
The sufficient conditions are given for all solutions of certain non-autonomous differential equation to be uniformly bounded and convergence to zero as t→∞.The result given includes and improves that result obtained by Abou-El-Ela & Sadek.
Comparison of Two Methods in Satellite Formation Flying
GAO Yun-feng, BAOYIN He-xi, LI Jun-feng
2003, 24(8): 799-804.
Abstract(4566) PDF(981)
Abstract:
Recently,the research of dynamics and control of the satellite formation flying has been attracting a great deal of attentions of the researchers.The theory of the research was mainly based on Clohessy-Wiltshire's(C-W's) equations,which describe the relative motion between two satellites.But accordi...
Absolute Stabilization Related to Circle Criterion: an LMI-Based Approach
YANG Ying, HUANG Lin
2003, 24(8): 805-811.
Abstract(2749) PDF(1315)
Abstract:
Amethod is proposed for synthesizing output feedback controllers for nonlinear Lur'e systems.The problem of designing an output dynamic controller for uncertain-free systems and systems subject to multiplicative norm-bounded perturbations in the linear part were proposed respectively.The procedure i...
Analysis on the Cohesive Stress at Half Infinite Crack Tip
WANG Li-min, XU Shi-lang
2003, 24(8): 812-820.
Abstract(2955) PDF(628)
Abstract:
The nonlinear fracture behavior of quasi-brittle materials is closely related with the cohesive force distribution of fracture process zone at crack tip.Based on fracture character of quasi-brittle materials,a mechanical analysis model of half infinite crack with cohesive stress is presented.A pair ...
Flow Properties of a Dusty-Gas Point Source in a Supersonic Free Stream
WANG Bo-yi, Alexander N. Osiptsov, Misha A. Teverovshii
2003, 24(8): 821-826.
Abstract(2885) PDF(533)
Abstract:
By using Lagrangian method,the flow properties of a dusty-gas point source in a supersonic free stream were studied and the particle parameters in the near-symmetry-axis region were obtained.It is demonstrated that fairly inertial particles travel along oscillating and intersecting trajectories betw...
Optimal Selection for the Weighted Coefficients of the Constrained Variational Problems
WEI Ming, LIU Guo-qing, WANG Cheng-gang, GE Wen-zhong, XU Qin
2003, 24(8): 827-834.
Abstract(2368) PDF(719)
Abstract:
The aim is to putforward the optimal selecting of weights in variational problem in which the linear advection equation is used as constraint.The selection of the functional weight coefficients(FWC) is one of the key problems for the relevant research.It was arbitrary and subjective to some extent p...
Generalization of Steiner Formula for the Homothetic Motions on the Planar Kinematics
N. Kuruoglu, M. Dldl, A. Tutar
2003, 24(8): 835-838.
Abstract(2265) PDF(609)
Abstract:
The Steiner formula and the mixture area formula given by Mller were expressed under the l-parameter closed planar homothetic motions in the complex sense.Also,using the generalization of Steiner formula,the result of Holditch theorem for homothetic motions is got.In the case of the homothetic scale...
Level Set Methods Based on Distance Function
WANG De-jun, TANG Yun, YU Hong-chuan, TANG Ze-sheng
2003, 24(8): 839-848.
Abstract(3795) PDF(2161)
Abstract:
Some basic problems on the levelset methods were discussed,such as the method used to preserve the distance function,the existence and uniqueness of solution for the level set equations.The main contribution is to prove that in a neighborhood of the initial zero level set,the level set equations wit...
Paradox Solution on Elastic Wedge Dissimilar Materials
YAO Wei-an, ZHANG Bing-ru
2003, 24(8): 849-856.
Abstract(2592) PDF(558)
Abstract:
According to the Hellinger Reissner variational principle and introducing proper transformation of variables,the problem on elastic wedge dissimilar materials can be led to Hamiltonian system,so the solution of the problem can be got by employing the separation of variables method and symplectic eig...
Nonlinear Random Stability of Viscoelastic Cable With Small Curvature
LI Ying-hui, GAO Qing
2003, 24(8): 857-864.
Abstract(2383) PDF(465)
Abstract:
The non-linear planar mean square response and the random stability of a viscoelastic cable that has a small curvature and subjects to planar narrow band random excitation is studied.The Kelvin viscoelastic constitutive model is chosen to describe the viscoelastic property of the cable material.Amat...
Interaction of a Screw Dislocation in the Interphase Layer With the Inclusion and Matrix
JIANG Chi-ping, LIU You-wen, XU Yao-ling
2003, 24(8): 865-873.
Abstract(2550) PDF(597)
Abstract:
The interaction of a screw dislocation in the interphase layer with the circular inhomogeneity and matrix was dealt with.An efficient method for multiply connected regions was developed by combining the sectionally subholomorphic function theory,Schwarz symmetric principle and Cauchy integral techni...
Chaos in Transiently Chaotic Neural Networks
RUAN Jiong, ZHAO Wei-rui, LIU Rong-song
2003, 24(8): 874-880.
Abstract(2387) PDF(647)
Abstract:
It was theoretically proved that one-dimensional transiently chaotic neural networks have chaotic structure in sense of Li-Yorke theorem with some given assumptions using that no division implies chaos.In particular,it is further derived sufficient conditions for the existence of chaos in sense of L...