Results 221 to 230 of about 21,843 (255)

A non‐iterative finite element method for inverse heat conduction problems

International Journal for Numerical Methods in Engineering, 2003
AbstractA non‐iterative, finite element‐based inverse method for estimating surface heat flux histories on thermally conducting bodies is developed. The technique, which accommodates both linear and non‐linear problems, and which sequentially minimizes the least squares error norm between corresponding sets of measured and computed temperatures, takes ...
Ling, Xianwu, Keanini, Russell G., Cherukuri, H. P.   +2 more
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Moore-penrose inverse method of topological variation of finite element systems

Computers & Structures, 1997
Abstract A topological modification method for structural variations of finite element system is studied in this paper. The Moore-Penrose (M-P) inverse theory and a new factorization of a stiffness matrix are used. A set of explicit formulations of variations are obtained.
Liang, Ping, Chen, Suhuan, Huang, Cheng
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Time-Domain Finite Element Method for Inverse Problem of Aircraft Maneuvers

Journal of Guidance, Control, and Dynamics, 1997
Summary: A method for solving nonlinear inverse problems is proposed. The inverse problem is formulated as a general optimization problem with equality constraints that are functions of state variables. The optimality conditions are derived by a variational approach.
Lee, Suchang, Kim, Youdan
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Damage Localisation in Thin Plates Using the Inverse Finite Element Method

2019
This work investigates the use of the inverse Finite Element Method (iFEM) for damage localisation by reconstructing the damaged strain field of the structure. The iFEM is a proven technique for reconstructing the displacement field of a structure using surface strain measurements from discrete locations on the structure.
Roy R., Gherlone M., Surace C.
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Application of the finite-element method for the forward and inverse models in optical tomography

Journal of Mathematical Imaging and Vision, 1993
The authors introduce a model for the simulation of photon propagation in a biological tissue. The reconstruction problem is ill-posed because of scatter-dominated photon propagation. The iterative image recovery algorithm described in this paper uses a numerical finite element solution to the diffusion equation. The advantage of the numerical solution
Martin Schweiger, Simon R. Arridge, David T. Delpy   +2 more
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A hybrid finite element-boundary element method and its application to inverse scattering

Digest on Antennas and Propagation Society International Symposium, 2003
A hybrid finite-element-boundary-element (FE-BE) formulation is applied to direct and inverse electromagnetic scattering from inhomogeneous scatterers. FEM is used in the inhomogeneous region, while BEM is applied to the external unbounded region. This hybrid method has the merits of both methods, i.e.
null Taek-Kyung Lee, null Soo-Young Lee, null Jung-Woong Ra   +2 more
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Apparent Young's modulus of human radius using inverse finite element method

Journal of Biomechanics, 2006
The ability to assess the elastic and failure properties of cortical bone at the radial diaphysis has a clinical importance. A new generation of quantitative ultrasound (QUS) devices and peripheral quantitative computed tomography (p-QCT) has been developed to assess non-invasively bone material and structural properties at the distal radius.
M R, Bosisio, M, Talmant, W, Skalli, P, Laugier, D, Mitton   +4 more
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Estimation of Motion through Inverse Finite Element Methods with Triangular Meshes

2001
This paper presents algorithms to implement the estimation of motion, focusing on the finite element method as a framework for the development of techniques. The finite element approach has the advantages of a rigorous mathematical formulation, speed of reconstruction, conceptual simplicity and ease of implementation via well-established finite element
Joan V. Condell, Bryan W. Scotney, Philip J. Morrow   +2 more
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Solution of 3D inverse scattering problems by combined inverse equivalent current and finite element methods

Journal of Computational Physics, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Emre Kiliç, Thomas F. Eibert
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Inverse and Feedback Analyses Based on the Finite Element Method

2018
To undertake a successful computation task concerning the construction and operation process of hydraulic structures, one of the mostly concerned obstacles is the limited or incomplete sets of input data. This chapter presents the study on the inverse and feedback analyses for hydraulic structures using the FEM, intended to provide another parametric ...
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