494 Result(s)
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Article
Zhigang **
Engineering
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Article
Interface crack between two elastic layers
A semi-infinite interface crack between two infinite isotropic elastic layers under general edge loading conditions is considered. The problem can be solved analytically except for a single real scalar indepen...
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A constitutive relation for pseudo-elastic behaviour in shape memory alloys
A constitutive relation to describe pseudo-elastic deformation in shape memory alloys is presented in this paper. It is capable of describing deformation behaviour of polycrystalline materials under triaxial s...
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Singular fields of a mode III interface crack in a power-law hardening bimaterial
A high order of asymptotic solution of the singular fields near the tip of a mode III interface crack for pure power-law hardening bimaterials is obtained by using the hodograph transformation. It is found tha...
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Study of constitutive relations for pseudo-elasticity and shape memory behavior
Constitutive relations are given for the description of the deformation behavior of shape memory materials. The deformation is the superposition of the elastic, the thermal and the phase transformation deforma...
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Global view of microstructural evolution: Energetics, kinetics and dynamical systems
An evolving material structure is in a non-equilibrium state, with free energy expressed by the generalized coordinates. A global approach leads to robust computations for the generalized thermodynamic forces....
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Analysis of the leaky bucket algorithm for priority services
The leaky bucket algorithm with loss priorities is studied in this paper. The analytical expression of the relation among leaky bucket performance, statistical parameters of input traffic and leaky bucket para...
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A matrix algorithm for computing the free space distance of TCM signal sequences
In this paper, the problem of computing the free distance of Trellis Coded Modulation (TCM) signal sequence has been discussed; a new algorithm—the matrix algorithm is proposed; and the step-number estimation ...
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Examination of the Extinguishment Performance of a Water Mist System Using Continuous and Cycling Discharges
We conducted a series of full-scale fire tests of a twin-fluid water mist system in an empty enclosure and in a simulated machinery space. During the tests, two water mist discharge modes, continuous and cycli...
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A Length-Scale Equation
We derive an equation for the average length-scale in a turbulent flow from a simple physical model. This is a tensorial length-scale. We use as a model the evolution of a blob of turbulent kinetic energy unde...
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A new admission control approach based on prediction
Admission control plays an important role in providing QoS to network users. Motivated by the measurement-based admission control algorithm, this letter proposed a new admission control approach for integrated...
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Stability criteria for a class of uncertain systems with time-delay
Some stability criteria are obtained for a class of uncertain systems with time-delay using Lyapunov functional and analytic techniques. It is easy to check the criteria by making use of the boundedness of the...
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The establishment and reasoning of knowledge base system for mechanism kinematic schemes
As one of the key problems of computer-aided conceptual design (CACD) for mechanism kinematic schemes, the effective establishment and management of knowledge base systems of kinematic behaviours and mechanism...
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3-D locomotion control for a biomimetic robot fish
This paper concerns with 3-D locomotion control methods for a biomimetic robot fish. The system architecture of the fish is firstly presented based on a physical model of carangiform fish. The robot fish has a...
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Extinguishment of Cooking Oil Fires by Water Mist Fire Suppression Systems
A series of full-scale experiments were conducted in a mock-up commercial cooking area to study extinguishing mechanisms and effectiveness of water mist against cooking oil fires. The impact of water mist char...
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An adaptive FEC scheme for Ka-band satellite communications
Rain attenuation is the major problem for Ka-band satellite communications, and the fading due to rain can be well described by a lognormally distributed, first-order autoregressive model. Forward Error-contro...
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Rapid Mixing Using Two-Phase Hydraulic Focusing in Microchannels
Rapid mixing is important in biomedical analysis. In this study, rapid mixing is obtained through two-phase hydraulic focusing in microchannels. Two mixing streams are focused by two sheath streams. Assuming a...
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Convective–diffusive transport in parallel lamination micromixers
Effective mixing and a controllable concentration gradient are important in microfluidic applications. From the scaling law, decreasing the mixing length can shorten the mixing time and enhance the mixing qual...
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Experimental study on visualization of the flow field in microtube
An experimental study was conducted to visualize the flow field and confirm the transitional Reynolds number from laminar to turbulent flow, as distilled water flows through quartz glass microtubes with inner ...
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A multi-coupled finite element analysis of Resistance Spot Welding process
A two-dimensional axisymmetric finite element model is developed to analyze the transient thermal and mechanical behaviors of the Resistance Spot Welding (RSW) process using commercial software ANSYS. Firstly ...
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ANALYSIS OF RECTANGULAR WAVEGUIDE GRATING SLOW-WAVE STRUCTURE WITH THE ARBITRARY SHAPED GROOVES
The rectangular waveguide grating slow-wave structure (SWS) with arbitrary shaped grooves is presented and analyzed in this paper. As an all-metal slow-wave circuit, it has properties that can be used in high-...
