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	1. On the Capacity over Spatially Correlated Rayleigh-Fading Channels in the presence of Spatially Correlated Interference
	Yue Dianwu,Zhang T. Q
	Mechanics 13 March 2006
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	Abstract:In this paper, we investigate the capacity of multiple-input/multiple-output (MIMO) systems, which is a general Rayleigh/Rayleigh model including spatially correlated channels as well as spatially correlated interferers. Perfect channel information is assumed to be available to the receiver, but the transmitter has no channel information. Based on the theory of matrix variate distribution, we derive exact closed-form expressions of the moment generating function (MGF) of mutual information of MIMO channels with interference. Then we obtain further exact closed-form expressions of the MIMO ergodic capacity with these MGF formulas of mutual information.
	TO cite this article:Yue Dianwu,Zhang T. Q. On the Capacity over Spatially Correlated Rayleigh-Fading Channels in the presence of Spatially Correlated Interference[OL].[13 March 2006] http://en.paper.edu.cn/en_releasepaper/content/5676


	2. Design of Optimal Tracking Controller for Nonlinear Discrete System with Input Delay Using Information Fusion Estimation Method
	WANG Zhi-sheng,WANG Dao-bo
	Mechanics 19 December 2005
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	Abstract:Based on the theory of information fusion estimation, information fusion optimal tracking control algorithms of nonlinear discrete system with input delay are proposed. All information with respect to control strategy, including ideal control strategy, expected object trajectory, and system dynamical equation are regarded as measuring information of control strategy. Therefore, the question of optimal control can be transferred into one of information fusion estimation, and the algorithms of optimal tracking control of time-delayed nonlinear discrete-system are given in detail. In the end, the mathematical simulation results show the validity of the algorithms presented in this paper.
	TO cite this article:WANG Zhi-sheng,WANG Dao-bo. Design of Optimal Tracking Controller for Nonlinear Discrete System with Input Delay Using Information Fusion Estimation Method[OL].[19 December 2005] http://en.paper.edu.cn/en_releasepaper/content/4460

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	3. Two-dimensional sliding frictional contact mechanics of functionally graded materials with arbitrary spatial variations of material properties
	Liao-Liang Ke,Yue-Sheng Wang
	Mechanics 14 December 2005
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	Abstract:A multi-layered model for sliding frictional contact analysis of functionally graded materials (FGMs) with arbitrarily varying elastic modulus under plane strain-state deformation has been developed. Based on the fact that an arbitrary curve can be approached by a series of continuous but piecewise linear curves, the FGM is divided into several sub-layers and in each sub-layers the shear modulus is assumed to be a linear function while the Possion’s ratio is assumed to be a constant. On the contact area, it is assumed that the friction is one of Coulomb type. With this model the fundamental solutions for concentrated forces acting perpendicular and parallel to the FGMs layer surface are obtained. Then the sliding frictional contact problem of a functionally graded coated half-space is investigated. The transfer matrix method and Fourier integral transform technique are employed to cast the problem to a Cauchy singular integral equation. The contact stresses and contact area are calculated for various moving stamps by solving the equations numerically.
	TO cite this article:Liao-Liang Ke,Yue-Sheng Wang. Two-dimensional sliding frictional contact mechanics of functionally graded materials with arbitrary spatial variations of material properties[OL].[14 December 2005] http://en.paper.edu.cn/en_releasepaper/content/4373


	4. The anti-plane dynamic fracture analysis of functionally graded materials with arbitrary spatial variations of material properties
	Xiao-Xia Gao,Yue-Sheng Wang,Gan-Yun Huang
	Mechanics 14 December 2005
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	Abstract:Anti-plane dynamic fracture analysis is presented for functionally graded materials (FGM) with arbitrary spatial variations of material properties. The functionally graded material (FGM) with material properties varying continuously in an arbitrary manner is modeled as a multi-layered medium with the elastic modulus and mass density varying linearly in each sub-layer and continuous at the interfaces between sub-layers. With this linearly inhomogeneous multi-layered model, the problem of a crack in a graded interfacial zone bonded to two homogeneous half-spaces or in a coating bonded to a homogeneous half–space subjected to the anti-plane shear impact load is investigated. Laplace and Fourier transforms and transfer matrix are applied to reduce the mixed boundary value problem to a Cauchy singular integral equation which is solved numerically in the Laplace transformed domain. The dynamic stress intensity factors (DSIF) are obtained by using the numerical technique of Laplace inversion.
	TO cite this article:Xiao-Xia Gao,Yue-Sheng Wang,Gan-Yun Huang. The anti-plane dynamic fracture analysis of functionally graded materials with arbitrary spatial variations of material properties[OL].[14 December 2005] http://en.paper.edu.cn/en_releasepaper/content/4372


	5. Electric potential drops across a crack gap in piezoelectrics
	Ou Zhuocheng,Chen Yiheng
	Mechanics 09 December 2005
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	Abstract:This paper presents a study of electric potential drops across a PKHS crack gap in piezoelectric materials. The PKHS crack was proposed by Parton and Kudryavtsev [1] and Hao and Shen [2], which accounts for the influence induced by the permittivity of medium inside crack gap upon crack tip parameters. Although many efforts have been addressed in the past 10 years, the present investigation does provide some novel features and better understandings on electric potential drops across the crack gap. Based on Stroh’s theory, an alternative technique is proposed in a compact form without any treatment of the mapping technique [3]. Different media such as air or vacuum, Silicon oil, and NaCI solution inside the crack gap are considered for comparisons, from which the influences of different permittivities of media inside the crack gap on the NCODJ and EPD across the crack gap respectively in seven kinds of piezoelectric ceramics are studied in detail. Numerical results of the normal crack opening displacement jump (NCODJ) and the electric potential drop (EPD) against the applied electric field are plotted in figures. It is found that the NCODJ for a central PKHS crack with length 2mm is always extremely small, around 1mm or 0.05% of the crack length when the mechanical loading is taken to be 20MPa and the electric field varies from –1MV/m to 1MV/m, whereas the EPD is very large, around several hundreds or more than thousand Volt. It is also found that the permittivities of media inside the crack gap influence the NCODJ and EPD significantly.
	TO cite this article:Ou Zhuocheng,Chen Yiheng. Electric potential drops across a crack gap in piezoelectrics[OL].[ 9 December 2005] http://en.paper.edu.cn/en_releasepaper/content/4217


	6. Spontaneous waviness of a core-shell nanowire
	Linghui He
	Mechanics 02 December 2005
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	Abstract:This paper studies morphological instability of core-shell nanowires composed of circularly cylindrical nanowire on which a heterogeneous epilayer is deposited coherently. A linear analysis is performed to obtain the dispersion relation analytically. It is found that the stability of the core-shell system depends on many factors, such as the radius of the core, the thickness of the epilayer as well as the competition between the surface energy and the bulk strain energy. Numerical results are shown in detail.
	TO cite this article:Linghui He. Spontaneous waviness of a core-shell nanowire[OL].[ 2 December 2005] http://en.paper.edu.cn/en_releasepaper/content/4042


	7. The study of the fatigue crack propagation threshold based on the maximum stress intensity factor
	Meng Zhaoxin,Zhang Jiazhen
	Mechanics 29 September 2005
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	Abstract:In situ SEM observations have revealed that fatigue crack propagation is caused by the shear band decohesion around the crack tip and the formation and cracking of the shear band is mainly caused by the plasticity generated in the loading part of a load cycle. Based on the crack tip plasticity a theoretical analysis has been performed and a model has been set up to consider the effect of the applied stress ratio on fatigue crack propagation threshold. The obtained results have been compared with published test data and good agreement has been achieved. This method is very easy to use and no fatigue crack closure measurement is needed, therefore this model is significant in engineering application.
	TO cite this article:Meng Zhaoxin,Zhang Jiazhen. The study of the fatigue crack propagation threshold based on the maximum stress intensity factor[OL].[29 September 2005] http://en.paper.edu.cn/en_releasepaper/content/3073


	8. All-Fiber Modulator Using Two-Channel Surface Acoustic Wave Device
	Zhao Luming,Zhao Qida,Mu Guoguang
	Mechanics 11 May 2005
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	Abstract:The interaction of multi-channel acoustic waves with an optical wave in fiber is studied. A new type of 2-channel surface acoustic wave (SAW) all-fiber acousto-optic modulator is constructed. The theoretical analysis is supported by the experimental results.
	TO cite this article:Zhao Luming,Zhao Qida,Mu Guoguang. All-Fiber Modulator Using Two-Channel Surface Acoustic Wave Device[OL].[11 May 2005] http://en.paper.edu.cn/en_releasepaper/content/2015


	9. Theoretical Derivation of The Rational Slope Curve for The Oval-shaped Deep Open Pits
	YUE Shuyu,ZHANG Shixiong,REN Gaofeng
	Mechanics 14 March 2005
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	Abstract:The mechanical analysis of the oval-shaped deep open pit slope is presented in this paper. Based on the theory of elasticity, the circumference stresses at the edge of the oval-shaped open pit caused by the deadweight of the rock and the horizontal virgin stress are derived. Then considering the critical sliding conditions of the infinitesimal element, the first order differential equation, which defined the relations between the depth and the radius of curvature of the slope, is obtained. Through the particular case study, it is found that the slope curve function obtained theoretically is rational.
	TO cite this article:YUE Shuyu,ZHANG Shixiong,REN Gaofeng. Theoretical Derivation of The Rational Slope Curve for The Oval-shaped Deep Open Pits[OL].[14 March 2005] http://en.paper.edu.cn/en_releasepaper/content/1688


	10. Hydration Heat, Shrinkage and Deformation Under Sustained Loads of HSS Columns Filled with Self-Consolidating Concrete
	Han Lin-Hai,Yang You-Fu,Li Yong-Jin
	Mechanics 24 February 2005
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	Abstract:n recent years, the possibility of using hollow structural steel (HSS) columns filled with self-consolidating concrete (SCC) in practical engineering, has been the interests of structural engineers. However, the composite members are susceptible to the characteristics of temperature field due to cement hydration heat, the shrinkage of core concrete and the deformations subjected to long-term loading. The temperature field during cement hydration, and the shrinkage of the concrete core in self-consolidating concrete (SCC)-filled hollow structural steel (HSS) tubes (SCCHSS) are experimentally studied in this paper. The main parameters are sectional dimensions and sectional types. The observed results illustrate that the characteristics of the temperature field in SCCHSS tubes is similar to that of normal concrete members. However, the shrinkage value of the concrete core in SCCHSS tubes is significantly smaller than that of normal concrete. Based on the measured results, shrinkage mode
	TO cite this article:Han Lin-Hai,Yang You-Fu,Li Yong-Jin. Hydration Heat, Shrinkage and Deformation Under Sustained Loads of HSS Columns Filled with Self-Consolidating Concrete[OL].[24 February 2005] http://en.paper.edu.cn/en_releasepaper/content/1585

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