In this letter, the entire domain (ED) basis function method is applied to modes analysis of composite finite periodic array-object. To construct ED functions, array cell and object are performed, respectively. The eigenvalues eigencurrents obtained. bases on constructed using a few eigencurrents. Then, reduced generalized eigenvalue equation (GEE) based will be By solving equation, characteristic structure can analyzed. reduce fill-in time matrices in GEE, adaptive cross approximation...

In this paper, the sub-entire domain basis function method and characteristic (CF) are used to analyze scattering of large-scale periodic structures. The former can dramatically reduce number unknows. To time for impedance matrix generation, CF be when distance between source testing positions is big enough. Finally, some simulation examples given validate method.

One of most difficult challenges in simulating hybrid RF systems by finite-difference time-domain (FDTD) method is to construct the models for active and lumped elements. In this article, combining circuit equations with an integral transform, enhanced FDTD proposed model network which consists nonlinear high order linear elements arbitrary connections. Based on model, radiation system analyzed. And it shows application extension traditional method.

In this letter, an extended accurate sub-entire domain basis function method is proposed, in which the number of unknowns further reduced than original one. The solution time shorter because reduced. Several examples are given, show that numerical results given by proposed good agreement with those moments and Meanwhile, CPU method.

The assessment of benzene emissions from a soil to the atmosphere is important for preservation human health and management contaminated soils. adequacy simple numerical model, assuming two-phase diffusion linear equilibrium liquid–solid adsorption, was investigated by comparing changes in concentration an Andosol with predicted flux chamber. Different initial concentrations were applied water content 25 kg kg−1 determine liquid phase adsorption coefficient (KD), which ultimately determined...

In this paper, an extended simplified sub-entire domain (ExSSED) basis function method is presented. Its advantage that it can further reduce the number of unknowns over original one. Several numerical examples are given to validate its accuracy. Good agreement between results using proposed and those by moments achieved.

An efficient wideband electromagnetic scattering analysis method for finite periodic structures by combining the accurate subentire-domain (ASED) basis function with frequency-independent reaction (FIR) is presented. The ASED suitable analyzing less unknowns than conventional of moments (MoM). Its efficiency very high. However, it a single-frequency technique and still time-consuming frequency sweep. FIR can accelerate sweep, in which exponential Green expanded Taylor series. impedance...

Micro- and nanowires are commonly used in biological sciences, micro- nanoelectronics, optoelectronics, their morphological stability needs to be understood controlled. We study the linear of equilibrium circular wires with length diameter ratio 1, 2, 3.5, 6, 11, assuming that wire surface can deform by capillarity-driven diffusion. The facetted shape is modeled Dirac delta function perturbed an infinitesimal axisymmetric disturbance, leading eigenvalue problem for growth rate, which solved...

The rheological behaviors of nylon610 and nylon610/montmorillonite nanocomposites had been studied by means HAAKE-Ⅱrheometer. results showed that composites were pseudoplastic fluid. non-Newtonian indexes, which in the range 0.49～0.82 at differern temperatures, decreased with addition montmorillonite. What is more, apparent viscous activation energy decreased, effect temperature on viscosity was weaker than pure nylon610, increased increase montmorillonite, especially lower shear rate.

For most past scheduling problems, research condition is based on enough orders. But the of production capability more than number orders, how to accomplish limited orders make cost as small possible a significantly considered question. Based Plant Simulation and its Genetic Algorithm, method optimizing when put forward. This realizes relevant minimize propose solution for these problems complex combined optimization.

The frequency-independent reaction (FIR) is improved by using the equivalent dipole-moment (EDM) method. FIR a fast frequency sweep technique based on Taylor series expansion, where exponential of Green function expanded as series. matrix element becomes summation, each term product geometric components that are computed once and phase factor must be at frequency. can efficiently generated FIR. However, memory requirement large. component generation still time consuming. In this paper,...

A fast fill-in technique of impedance matrix in the accurate subentire domain basis function method for analyzing large-scale planar periodic structures is presented. By using proposed technique, generation time can be reduced from O(N <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> <sub xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> ) to ), where N number unit cells total structure. To validate accuracy and efficiency method,...

Mechanical components are subjected heavy alternate load in industries, such as engine crankshaft, wheel axle, etc. The fatigue failure happens after a long work loading, which affects the production cost, safe and time. So life predication is fundamental for mechanical design. Especially, it very important heavy, high-speed machinery. In this paper, both main formulas introduced briefly, including Manson-Coffinn formula Damage strain model. Then, shortages of above pointed out, coefficients...

The characteristic modes of the aperiodic arrays are analyzed by combining entire domain basis function method with adaptive cross approximation (ACA) algorithm. array cells identical. functions defined on obtained analyzing reference cell firstly. Then, generalized eigenvalue equation whose size is smaller than conventional one can be obtained. After solving equation, whole analyzed. Calculation matrices very time-consuming. To speed up computation, ACA algorithm applied. Several numerical...

A hybrid macro basis function (MBF) method is proposed to analyze the finite periodic array in vicinity of an arbitrary object. The cells and object are modeled using low order functions firstly. Afterwards, MBFs defined on constructed modified accurate subentire domain method. can be obtained characteristic total number far less than that bases. Another advantage multiple excitations efficiently computed. Simulation results show good agreement between other techniques reached. In addition,...

The enhanced gap source model and the finite-width feed are two accurate models considering width of in antenna modeling. These easy to implement. Comparing with former model, finer meshes required latter one, which leads more unknowns. compared study how choose model.

When the social force model is used to simulate crowd evacuation, how reduce amount of calculation original an important problem which can not only affect speed solving but also control program running time. This paper investigates impact that number each team's members and scale have on evacuation time in rooms with different exit width. Therefore, it proposes grouping model, divide into multiple groups group considered as a whole moving unit decrease computation model. The simulation...