Results 21 to 30 of about 122,744 (306)

A two-stage model updating method for the linear parts of structures with local nonlinearities

open access: yesFrontiers in Materials, 2023
Finite element model updating provides an important supplement for finite element modelling. However, some studies have shown that if the tested structure involves local nonlinearities due to damages, material properties and large deformation et al., it ...
Hao Zhang   +9 more
doaj   +1 more source

Finite element model updating of natural fibre reinforced composite structure in structural dynamics

open access: yesMATEC Web of Conferences, 2016
Model updating is a process of making adjustment of certain parameters of finite element model in order to reduce discrepancy between analytical predictions of finite element (FE) and experimental results.
Sani M.S.M.   +4 more
doaj   +1 more source

A Statistical Model Updating Method of Beam Structures with Random Parameters under Static Load

open access: yesApplied Sciences, 2017
This paper presents a new statistical model updating method of beam structures with random parameters under static load. The new updating method considers structural parameters and measurement errors to be random.
Zhifeng Wu   +3 more
doaj   +1 more source

A bayesian optimisation methodology for the inverse derivation of viscoplasticity model constants in high strain-rate simulations

open access: yesDefence Technology, 2022
We present an inverse methodology for deriving viscoplasticity constitutive model parameters for use in explicit finite element simulations of dynamic processes using functional experiments, i.e., those which provide value beyond that of constitutive ...
Shannon Ryan   +4 more
doaj   +1 more source

Experimental Studies on Finite Element Model Updating for a Heated Beam-Like Structure

open access: yesShock and Vibration, 2015
An experimental study was made for the identification procedure of time-varying modal parameters and the finite element model updating technique of a beam-like thermal structure in both steady and unsteady high temperature environments.
Kaipeng Sun, Yonghui Zhao, Haiyan Hu
doaj   +1 more source

Model Updating Strategy of the DLR-AIRMOD Test Structure [PDF]

open access: yes, 2017
Considerable progresses have been made in computer-aided engineering for the high fidelity analysis of structures and systems. Traditionally, computer models are calibrated using deterministic procedures.
Broggi, Matteo   +3 more
core   +2 more sources

Three Case Studies in Finite Element Model Updating

open access: yesShock and Vibration, 1995
This article summarizes the basic formulation of two well-established finite element model (FEM) updating techniques for improved dynamic analysis, namely the response function method (RFM) and the inverse eigensensitivity method (IESM).
M. Imregun
doaj   +1 more source

Structural model calibration of RC structure with two-leaf cavity brick infill wall by deterministic approach [PDF]

open access: yes, 2017
An adaptive solution for updating structural model of a RC structure with two-leaf cavity brick infill wall under flexible boundary problem is presented in this paper. The structure was simulated with Diana 9.4.4 finite element software. Next, an elastic
Kocak, Ali   +2 more
core   +2 more sources

Finite element model updating for structural applications [PDF]

open access: yesJournal of Computational and Applied Mathematics, 2020
A novel method for performing model updating on finite element models is presented. The approach is particularly tailored to modal analyses of buildings, by which the lowest frequencies, obtained by using sensors and system identification approaches, need to be matched to the numerical ones predicted by the model.
Girardi M   +4 more
openaire   +4 more sources

Extension of the strain energy updating technique to a multilayered shell model with adaptive displacements and fixed DOF [PDF]

open access: yes, 2013
The strain energy updating technique (SEUPT) is extended to a new zigzag shell model with a hierarchical piecewise representation of displacements, which can adapt to a variation of solutions across the thickness.
Icardi, Ugo
core   +1 more source

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