Journal ArticleDOI
Improved Inverse Eigensensitivity Method for Structural Analytical Model Updating
TLDR
In this paper, an improved inverse eigensensitivity method, which avoids the existing problems of classical inverse eigen sensitivity method, has been developed, which employs both analytical and experimental modal data to calculate the required eigenensitivity coefficients which are very close to their true values.Abstract:
In order to update analytical models of practical engineering structures, inverse eigensensitivity method (IEM) has been developed. Though it has nowadays been widely accepted, the classical inverse eigensensitivity method does have some drawbacks such as the assumption of small error magnitudes and slow speed of convergence due to the fact that the sensitivity coefficients are calculated purely based on modal data of analytical model. In the present paper, an improved inverse eigensensitivity method, which avoids the existing problems of classical inverse eigensensitivity method, has been developed. The improved method employs both analytical and experimental modal data to calculate the required eigensensitivity coefficients which are very close to their true values. The method has been further extended to the case where measured coordinates are incomplete. Practical applicability of the method has been assessed by its application to the updating of the finite element model of a plane truss structureread more
Citations
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Journal ArticleDOI
Dynamic Assessment of Curved Cable-Stayed Bridge by Model Updating
James M. W. Brownjohn,Pin-Qi Xia +1 more
TL;DR: Tan et al. as discussed by the authors investigated the application of sensitivity-based model updating technology to the dynamic assessment of the Safti Link Bridge, a curved cable-stayed bridge in Singapore.
Journal ArticleDOI
Structural Dynamic Model Updating Techniques: A State of the Art Review
Shankar Sehgal,Harmesh Kumar +1 more
TL;DR: In this article, the authors present a review of structural dynamic model updating techniques, starting with a tutorial introduction of basic concepts of model updating, the paper reviews direct and iterative techniques of update along with their applications to real life systems.
Journal ArticleDOI
Comparative study of model updating methods using simulated experimental data
TL;DR: A detailed comparison of the inverse eigensensitivity method and the response function method of analytical model updating on the basis of computer simulated experimental data is given for studying the convergence of the two methods and the accuracy with which they predict the corrections required in a finite element model.
Journal ArticleDOI
Finite element model updating for a high-rise structure based on ambient vibration measurements
J.R. Wu,Qiusheng Li +1 more
TL;DR: This paper presents an eigensensitivity-based finite element (FE) model updating procedure for FE model updating of an existing 310 m tall Nanjing TV Tower based on ambient vibration measurements and finds that the FE model update procedure based on the weighted least squares method with groups of updating parameters is the most effective approach.
Journal ArticleDOI
Model updating of damped structures using FRF data
Rongming Lin,J. Zhu +1 more
TL;DR: In this article, the frequency response function (FRF) was further developed to identify damping matrices of structural systems, as well as mass and stiffness matrices, in order to overcome the problem of complexity of measured FRF and modal data.
References
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Journal ArticleDOI
Analytical Model Improvement Using Modal Test Results
Jay C. Chen,John A. Garbat +1 more
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Journal ArticleDOI
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