45 Result(s)
within
Yi**ang Chen
English
Classical Mechanics
Theoretical and Applied Mechanics
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Article
Piezoelectric Analogy of Generalized Torsion in Anisotropic Elasticity
We consider a piezoelectric body bounded by a cylindrical surface in which all cross sections are of the same geometry. Suppose on the lateral surface the body is loaded in such a way that the stress and elect...
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Article
Saint-Venant Torsion of a Two-Phase Circumferentially Symmetric Compound Bar
This work is concerned with the Saint-Venant torsion problem of a two-phase circumferentially symmetric compound prismatic bar. By generalizing a method originally proposed by Packham and Shail [12], we demons...
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Chapter
Uniqueness and Existence of Viscosity Solutions of Generalized mean Curvature Flow Equations
This paper treats degenerate parabolic equations of second order
(14.1) $$u_t + F(\nabla u,\nabla ^2 u) = 0$$ r... -
Article
A Confocally Multicoated Elliptical Inclusion under Antiplane Shear: Some New Results
The problem of a confocally multicoated elliptical inclusion in an unbounded matrix subjected to an antiplane shear is studied. Making use of the complex potentials and conformal map** techniques, we show th...
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Article
Electrically forced vibration of a thickness-twist mode piezoelectric resonator with non-uniform electrodes
We study the effect of electrodes with varying thickness on thickness-twist vibration of a piezoelectric plate resonator of crystals of 6 mm symmetry. An exact theoretical analysis is performed. Results show t...
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Article
An exact analysis of forced thickness-twist vibrations of multi-layered piezoelectric plates
This paper deals with the thickness-twist vibration of a multi-layered rectangular piezoelectric plate of crystals of 6 mm symmetry or polarized ceramics. An exact solution is obtained from the three-dimension...
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Article
Transversal inertial effect on relaxation/retardation time of cement mortar under harmonic wave
Under dynamic loading, the constitutive relation of the cement mortar will be significantly affected by the transversal inertial effect of specimens with large diameters. In this paper, one-dimensional theoret...
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Article
Active Control of a Flexible Cantilever Plate with Multiple Time Delays
Active control of a flexible cantilever plate with multiple time delays is investigated using the discrete optimal control method. A controller with multiple time delays is presented. In this controller, time ...
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Article
Rigorous Bounds on the Torsional Rigidity of Composite Shafts with Imperfect Interfaces
We derive upper and lower bounds for the torsional rigidity of cylindrical shafts with arbitrary cross-section containing a number of fibers with circular cross-section. Each fiber may have different constitue...
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Article
Equivalent Model of Expansion of Cement Mortar Under Sulphate Erosion
The expansion property of cement mortar under the attack of sulfate ions is studied by experimental and theoretical methods. First, cement mortars are fabricated with the ratio of water to cement of 0.4, 0.6, ...
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Article
Experimental Evaluation on Modulus of Equivalent Homogeneous Ettringite
In the present study, the average modulus of delayed ettringite is evaluated by an experimental method combined with theoretical analysis. Firstly, the delayed ettringite crystal is synthesized by chemical rea...
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Chapter and Conference Paper
Micro Asperity Type Induced in Electrostatic Resistance of MEMS
Friction force is present in most microelectromechanical systems (MEMS), since they have a large ratio of surface area to their volume. The understanding of friction is necessary to improving the performance a...
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Chapter and Conference Paper
Superlubricity Characteristics Using Ceramic Composite Mineral Powder as Lubricating Oil Additive
A kind of composite powder mixed serpentine with silica is used as lubricant additive in this paper. The tribological property of 1045 steel pairs lubricated with composite additive oil was studied using an AM...
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Chapter and Conference Paper
XPS and SEM Analyses of Self-Repairing Film Formed by Mineral Particles as Lubricant Additives on the Metal Friction Pairs
The characteristics of the 1045 steel pairs using serpentine particles as oil additive were investigated by an AMSLER friction and wear tester. The surface topographies and composition of the worn surface of 1...
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Chapter and Conference Paper
Elastohydrodynamic Lubrication and Asperity Contact Simulation of Engine Main Bearing with Flexible Rotating Crankshaft and Flexible Engine Block
The main objective of this paper is to describe an approach to the elastohydrodynamic lubrication analysis of crankshaft-bearing systems in a locomotive diesel generator set. The analytical model used in this ...
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Article
A Recipe for Building the Torsional-Rigidity Bounds of Shafts Containing Multiply Coated Fibers with Imperfect Interfaces
This work is concerned with deriving the upper and lower bounds for the torsional rigidity of cylindrical shafts with arbitrary cross-section containing a number of multiply coated fibers with imperfect interf...
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Article
A Universal Expression for Bounds on the Torsional Rigidity of Cylindrical Shafts Containing Fibers with Arbitrary Transverse Cross-Sections
We derive upper and lower bounds for the torsional rigidity of host shafts containing a number of cylindrical fibers. The transverse cross-sections of the host shaft and the fibers are simply connected, but co...
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Chapter and Conference Paper
Influence of Mechanical Properties and Loading Conditions on the Recovery of Shape Memory Polymers
This work presented a parameter study to investigate the influence of material properties and loading conditions on the recovery performance of amorphous shape memory polymers using a recently developed thermo...
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Chapter and Conference Paper
Crack growth behavior in preloaded metallic nested-angle plates under flight load spectrum
Numerical and experimental results are presented from a project aimed at predicting the fatigue life of a rotorcraft airframe component subjected to flight load spectrum. The airframe component is a riveted jo...
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Article
Effect of damage evolution on Poisson’s ratio of concrete under sulfate attack
Experimental results about concrete under sulfate attack are summarized, which include the variation of mass density of samples and velocity of ultrasonic wave propagating in samples. The evolution damage is a...
