1,721,119 research outputs found
Skin effect considerations on transient electrical stresses in composite structures affected by electrostatic discharge
No full textThis paper presents a circuit network analog for the solution of Maxwell's equations in composite structures affected by an electrostatic discharge event. The proposed equivalent circuit cell consists of conductances, inductances and capacitances. The SPICE simulator is used to solve the resulting network in terms of voltages, currents and their corresponding field variables. The validity of the proposed approach is demonstrated by comparing the results obtained by means of the circuit solution with those computed by a dedicated finite difference code
Calculation of current distribution in a lightning stroked metal structure considering the non-linear ground impedance
No full textComputation of the transient voltage distribution caused by direct lightning on flammable liquid containers
No full textTwo-dimensional analysis of composite structures by the finite-difference time-domain method adopting scaling approach
No full textAbstract—In this paper, the electric voltage of a single-layer ho-
mogeneous and anisotropic composite material has been calculated
developing a mathematical model based on the diffusion equation.
The proposed model has been developed assuming the minimum
wavelength of the source much longer than the greatest dimen-
sion of the analyzed structures and the charge relaxation time of
the composite material smaller than any allowable rise time of the
field source. The finite-difference time-domain method, based on
an explicit scheme, has been used to solve the differential equa-
tions and a scaling approach has been adopted to reduce computing
time. The obtained results carried have been compared with those
obtained simulating an equivalent electrical circuit network using
SPICE. A good agreement between these two methods has been ob-
served
A simple circuit method to estimate the magnetic attenuation of nonferrous metal shields
No full text
Quasi-stationary analysis of the electric field in anisotropic laminated composites
No full textThis paper deals with the analysis of the quasi-stationary electric field in the presence of anisotropic laminated composites. Both cylindrical and box composite structures are examined in the two-dimensional domain. Two methods are proposed to solve the problem, The first is a numerical procedure employing the finite-difference time domain which uses a direct implicit scheme; the second is an equivalent circuit network which is solved by the use of the standard circuit simulator SPICE, For the composite box structure, the results obtained by means of the two approaches are compared; it is possible to observe a good agreement between them
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