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Load Updating for Finite Element Models
AIAA Journal, 2003A method for reducing the differences between experimental testing or real-world events and their finite element counterparts is presented. In this method system identification or finite element model updating are not performed; instead, the loads on the finite element model that would create equivaient displacements or strains are identified by ...
Jeffrey M. K. Chock, Rakesh K. Kapania
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On the use of transmissibility measurements for finite element model updating
Journal of Sound and Vibration, 2007Conventional finite element updating techniques make use of measured frequency response functions and modal parameter estimates to update the FE model parameters. This paper presents a new technique to update the FE model from output-only transmissibility measurements assuming the location of the excitation force is known.
Steenackers, Gunther +2 more
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Finite Element Model Reduction and Model Updating of structures for Control
IFAC Proceedings Volumes, 2014Estimation and control of unmeasurable performance variables in complex large-scale systems is an important issue in systems and control. The preferred solution to this problem is to have a relatively low-order and accurate standard plant model which can be used for control purposes. For this purpose, a two-step procedure is proposed. The first step is
Dorosti, M. +4 more
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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 Kumar Bagha
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Finite element model updating with damping identification
Journal of Sound and Vibration, 2009Abstract Most of finite element model updating techniques do not employ damping matrices and hence, cannot be used for accurate prediction of complex frequency response functions (FRFs). In this paper, damped finite element model updating procedure is proposed and tested with the objective that the damped finite element updated model is able to ...
Vikas Arora, S.P. Singh, T.K. Kundra
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Load Updating for Nonlinear Finite Element Models
45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference, 2004A measurement-based load updating method for finite element models subjected to static loads was studied using a four-noded curved beam element for large displacements/rotations and a gradient-based variable metric optimizer. Finite element analysis was used to numerically calculate the geometrically linear and nonlinear responses and their ...
Jing Li, Rakesh K. Kapania
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Finite Element Model Updating Accounting for Modeling Uncertainty
2019A novel approach to deal with modeling uncertainty when updating mechanics-based finite element (FE) models is presented. In this method, a dual adaptive filtering approach is adopted, where the Unscented Kalman filter (UKF) is used to estimate the unknown parameters of the nonlinear FE model and a linear Kalman filter (KF) is employed to estimate the ...
Rodrigo Astroza +2 more
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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
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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
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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
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