Results 41 to 50 of about 402,202 (279)

FULL-VECTORIAL PARALLEL FINITE-ELEMENT CONTRAST SOURCE INVERSION METHOD [PDF]

open access: yesProgress In Electromagnetics Research, 2013
The multiplicatively regularized flnite-element contrast source inversion algorithm (MR-FEM-CSI) is used to solve the full- vectorial three-dimensional (3D) inverse scattering problem. The contrast and contrast-source optimization variables are located at the centroids of tetrahedra within the problem domain; whereas the electric fleld is expanded in ...
Amer Zakaria, Ian Jeffrey, Joe LoVetri
openaire   +1 more source

Approximation Method for Stress–Strain Using Metamodel Parameter Updating

open access: yesApplied Sciences, 2022
The properties of the material applied to the finite element (FE) simulation can be expressed by constitutive models, and simple constitutive and complex constitutive models can be used to show the actual phenomenon.
Dong-Seok Shin   +2 more
doaj   +1 more source

Identification of the Heat Transfer Coefficient at the Charge Surface Heated on the Chamber Furnace

open access: yesArchives of Metallurgy and Materials, 2017
The inverse method was applied to determine the heat flux reaching the charge surface. The inverse solution was based upon finding the minimum of the error norm between the measured and calculated temperatures. The charge temperature field was calculated
Gołdasz A., Malinowski Z.
doaj   +1 more source

Trefftz functions as basic functions of FEM in application to solution of inverse heat conduction problem

open access: yesComputer Assisted Methods in Engineering and Science, 2023
The work presents the application of heat polynomials for solving an inverse problem. The heat polynomials form the Trefftz Method for non-stationary heat conduction problem. They have been used as base functions in Finite Element Method. Application of
Michał J. Ciałkowski
doaj  

The adaptive finite element method for the Steklov eigenvalue problem in inverse scattering

open access: yesOpen Mathematics, 2020
In this study, for the first time, we discuss the posteriori error estimates and adaptive algorithm for the non-self-adjoint Steklov eigenvalue problem in inverse scattering.
Zhang Yu, Bi Hai, Yang Yidu
doaj   +1 more source

FEMSECT: An inverse section model based on the finite element method [PDF]

open access: yesJournal of Geophysical Research: Oceans, 2005
A new inverse model is presented for the analysis of hydrographic section data in conjunction with velocity measurements. The model offers advantages over commonly applied interpolation techniques because it combines data and physical assumptions such as geostrophic balance in the framework of a finite element discretization.
Losch, Martin   +2 more
openaire   +2 more sources

A boundary element model for structural health monitoring using piezoelectric transducers [PDF]

open access: yes, 2014
In this paper, for the first time, the boundary element method (BEM) is used for modelling smart structures instrumented with piezoelectric actuators and sensors. The host structure and its cracks are formulated with the 3D dual boundary element method
Aliabadi, MH, BENEDETTI, Ivano, Zou, F
core   +1 more source

Multi-patch discontinuous Galerkin isogeometric analysis for wave propagation: explicit time-stepping and efficient mass matrix inversion [PDF]

open access: yes, 2018
We present a class of spline finite element methods for time-domain wave propagation which are particularly amenable to explicit time-stepping. The proposed methods utilize a discontinuous Galerkin discretization to enforce continuity of the solution ...
Chan, Jesse, Evans, John A
core   +3 more sources

Numerical studies of the Lagrangian approach for reconstruction of the conductivity in a waveguide

open access: yes, 2017
We consider an inverse problem of reconstructing the conductivity function in a hyperbolic equation using single space-time domain noisy observations of the solution on the backscattering boundary of the computational domain.
A. N. Tikhonov   +18 more
core   +1 more source

Antenna pattern of DUAL detectors of gravitational waves and its exploitation in a network of advanced interferometers [PDF]

open access: yes, 2008
We investigate the directional sensitivity to plane gravitational waves (GWs) of DUAL detectors of cylindrical shape. Calculations make use of the finite element method to simulate the responses to the GW Riemann tensor of a single-mass DUAL (SMD) and of
Canton, T.   +3 more
core   +2 more sources

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