Results 251 to 260 of about 16,437,397 (288)
Some of the next articles are maybe not open access.
Finite element model updating of smart structures with direct updating algorithm
Physica Scripta, 2022Abstract In this paper, a finite element model updating algorithm is proposed to enhance the accuracy of the simulated finite element model of a smart structure (collocated piezoelectric patches embedded on a cantilever beam). Piezoelectric patches are used to sense and control the excessive vibrations of the structures.
Shivam Verma +3 more
openaire +1 more source
A Review on Studies of Finite Element Model Updating and Updating of Composite Materials
Materials Today: Proceedings, 2018Abstract This paper presents the review of finite element model updating and updating of composite materials related studies. The purpose of this review paper is to find the different techniques used in updating of the material's parameter, what are the limitations of these techniques and what are the assumptions to perform these experiments. In this
Ashok K Bagha
exaly +2 more sources
REGULARISATION METHODS FOR FINITE ELEMENT MODEL UPDATING
Mechanical Systems and Signal Processing, 1998Abstract This paper addresses the problem of selecting a side constraint and determining the regularisation parameter in model updating. The weight to be attached to the constraint is determined by the regularisation parameter. Methods based on singular value decomposition, cross-validation, and L-curves are considered, and results obtained by ...
H. Ahmadian +2 more
openaire +1 more source
An improved optimal elemental method for updating finite element models
Earthquake Engineering and Engineering Vibration, 2004The optimal matrix method and optimal elemental method used to update finite element models may not provide accurate results. This situation occurs when the test modal model is incomplete, as is often the case in practice. An improved optimal elemental method is presented that defines a new objective function, and as a byproduct, circumvents the need ...
Duan Zhongdong +3 more
openaire +1 more source
Generic element matrices suitable for finite element model updating
Mechanical Systems and Signal Processing, 1995Abstract Updating procedures are concerned with the construction of mass, stiffness and (possibly) damping matrices, near to some base matrices, which yield some response data close to some experimental values. One of the fundamental questions in updating relates to the criteria for allowable mass and stiffness matrices.
G.M.L. Gladwell, H. Ahmadian
openaire +1 more source
Stochastic Finite Element Model Updating by Bootstrapping
2016This paper presents a new stochastic finite element model calibration framework for estimation of the uncertainty in model parameters, which combines the principles of bootstrapping with the technique of FE model calibration with damping equalization. The bootstrapping allows to quantify the uncertainty bounds on the model parameters by constructing a ...
Vahid Yaghoubi +3 more
openaire +1 more source
Correlation and Updating of an Unmanned Aerial Vehicle Finite Element Model
56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2015In this paper the numerical models of the structural components of an UAV are separately correlated with their experimental counterparts and then updated, in order to improve the correlation. A sensitivity-based updating method is considered and its capabilities to identify changes of the design parameters that are physically acceptable investigated ...
A. S. Mezzapesa +5 more
openaire +2 more sources
ON A STATISTICAL OPTIMIZATION METHOD USED IN FINITE ELEMENT MODEL UPDATING
Journal of Sound and Vibration, 2000Bayesian estimator is a commonly used statistical optimization technique for finite element model updating. This paper presents a modified Bayesian estimator and discusses its unbiasedness, efficiency, learning ability and robustness. The main differences from other estimators, for instance, the least-squares method, are shown.
Hua, Hongxing +2 more
openaire +2 more sources
Finite Element Model Updating of a Steel Jacket Scale Model
Applied Mechanics and Materials, 2012In this paper, the finite element model of a steel jacket scale model is updated using modal parameters identified by modal test. Updating parameters are selected based on sensitivity analysis by solving modal energies. And then, a two-steps updating process is carried out using different parameters and the Cross-Model Cross-Mode (CMCM) model updating ...
Zhi Gang Li +3 more
openaire +1 more source
Model updating of finite element model using optimisation routine
Aircraft Engineering and Aerospace Technology, 2016Purpose The present paper aims to describe the model updating of a small aircraft dynamic finite element model (FEM) to improve its agreement with ground vibration test (GVT) data. Design/methodology/approach An automatic updating method using an optimization procedure is carried out.
Bimo Prananta +3 more
openaire +1 more source