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Author: Adam Mueller
Publisher:
ISBN:
Category :
Languages : en
Pages : 173
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Book Description
Hybrid simulations have shown great potential for economic and reliable assessment of structural seismic performance through a combination of physically tested components, called the experimental substructure, and numerically simulated components, called the numerical substructure. Current hybrid simulation practices often use a fixed numerical model without considering the possible availability of a more accurate model obtained during hybrid simulation through an online model updating technique. To address this limitation and improve the reliability of numerical models in hybrid simulations, this study describes the implementation of an online model updating method in real time hybrid simulation. The Unscented Kalman Filter was selected as the model updating algorithm and applied to identify Bouc-Wen model parameters that define the hysteresis of the experimental substructure, and the identified parameters were therefore applied to the numerical substructures during the hybrid simulation. Firstly, a parametric study of the UKF system model parameters was carried out. Then the developed online model updating method was experimentally validated through RTHS. Finally, guidelines for implementing the UKF for online model updating in future RTHS are provided.
Author: Adam Mueller
Publisher:
ISBN:
Category :
Languages : en
Pages : 173
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Book Description
Hybrid simulations have shown great potential for economic and reliable assessment of structural seismic performance through a combination of physically tested components, called the experimental substructure, and numerically simulated components, called the numerical substructure. Current hybrid simulation practices often use a fixed numerical model without considering the possible availability of a more accurate model obtained during hybrid simulation through an online model updating technique. To address this limitation and improve the reliability of numerical models in hybrid simulations, this study describes the implementation of an online model updating method in real time hybrid simulation. The Unscented Kalman Filter was selected as the model updating algorithm and applied to identify Bouc-Wen model parameters that define the hysteresis of the experimental substructure, and the identified parameters were therefore applied to the numerical substructures during the hybrid simulation. Firstly, a parametric study of the UKF system model parameters was carried out. Then the developed online model updating method was experimentally validated through RTHS. Finally, guidelines for implementing the UKF for online model updating in future RTHS are provided.
Author: Samuel Rit Richardson
Publisher:
ISBN:
Category : Earthquake engineering
Languages : en
Pages : 158
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Book Description
Author: Bilal Ahmed Mohammed
Publisher:
ISBN:
Category : Earthquake engineering
Languages : en
Pages : 168
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Book Description
Although conventional experimental methods, such as quasi-static testing, shake table testing, etc., perform well to evaluate structural seismic performance necessary for modern seismic design, the quasi-static loading and/or reduced scale specimen used in shake table testing may not provide true dynamic responses of structural systems. To overcome these limitations, real-time hybrid simulation (RTHS) was developed, which is a combination of physical testing of the experimental substructure and analytical simulation of the numerical substructure. With the advancement of hybrid simulation, it is now possible to economically test large to full-scale specimens in laboratories at the real earthquake rate. Online model updating of the numerical substructure model was recently adopted in RTHS for enhanced reliability and accuracy. Unscented Kalman Filter (UKF) and Constrained UKF (CUKF), that can estimate unknown variables using measurements, have been utilized to identify parameters of numerical models in RTHS. This thesis starts with the study of individual parameter’s effect on the Bouc-Wen (BW) and Bouc-Wen-Baber-Noori (BWBN) models hysteresis behavior. To facilitate implementation of RTHS with online Model Updating (RTHSMU), numerical simulations that compare the performance of UKF and CUKF in identifying parameters is conducted. Finally, RTHSMU experiments using UKF and CUKF were carried out for a three-story shear building modeled with the BW model. It is demonstrated from these experiments that adopting online model updating can improve the accuracy of the simulated response of the numerical substructure so an enhanced RTHSMU method is achieved.
Author: Wei Song
Publisher: Frontiers Media SA
ISBN: 2889663809
Category : Technology & Engineering
Languages : en
Pages : 213
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Book Description
Author: Victor Saouma
Publisher: CRC Press
ISBN: 1482288613
Category : Computers
Languages : en
Pages : 242
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Book Description
Hybrid Simulation deals with a rapidly evolving technology combining computer simulation (typically finite element) and physical laboratory testing of two complementary substructures. It is a cost effective alternative to shaking table test, and allows for the improved understanding of complex coupled systems. Traditionally, numerical simulation an
Author: Riadh Al-Mahaidi
Publisher: Springer
ISBN: 9811058679
Category : Science
Languages : en
Pages : 92
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Book Description
This book describes the multi-axis substructure testing (MAST) system, a simulator developed at Swinburne University of Technology, Australia, which provides state-of-the-art technology for large-scale hybrid testing of structures under realistic scenarios depicting extreme events. The book also demonstrates the responses of physical specimens while they serve as part of the virtual computer model of the full structure subjected to extreme dynamic forces. Experimental studies using the MAST system are expected to enhance design and construction methods and significantly improve the repair and retrofitting of structures endangered by natural disasters and man-made hazards, providing a direct benefit to society by improving public safety and the re silience of the built environment. An additional benefit is increased sustainability in the form of reduced direct and indirect economic losses and social and environmental impacts in the face of extreme events. This book will be of interest to researchers and advanced practitioners in the fields of structural earthquake engineering, geotechnical earthquake engineering, engineering seismology, and experimental dynamics, including seismic qualification.
Author: Andreas Linderholt
Publisher: Springer Nature
ISBN: 3030476308
Category : Technology & Engineering
Languages : en
Pages : 201
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Book Description
Dynamics of Coupled Structures, Volume 4: Proceedings of the 38th IMAC, A Conference and Exposition on Structural Dynamics, 2020, the fourth volume of eight from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of the Dynamics of Coupled Structures, including papers on: Methods for Dynamic Substructures Applications for Dynamic Substructures Interfaces & Substructuring Frequency Based Substructuring Transfer Path Analysis
Author: Zheng Lu
Publisher: MDPI
ISBN: 3038970379
Category : Technology & Engineering
Languages : en
Pages : 242
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Book Description
This book is a printed edition of the Special Issue " Development and Application of Nonlinear Dissipative Device in Structural Vibration Control" that was published in Applied Sciences
Author: Federico M. Mazzolani
Publisher: Springer Nature
ISBN: 3031038118
Category : Technology & Engineering
Languages : en
Pages : 1146
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Book Description
This volume highlights the latest advances, innovations, and applications in the field of seismic design and performance of steel structures, as presented by leading international researchers and engineers at the 10th International Conference on the Behaviour of Steel Structures in Seismic Areas (STESSA), held in Timisoara, Romania, on 25-27 May 2022. It covers a diverse range of topics such as behaviour of structural members and connections, performance of structural systems, mixed and composite structures, energy dissipation systems, self-centring and low-damage systems, assessment and retrofitting, codes and standards, light-gauge systems. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster multidisciplinary collaboration among different specialists.
Author: James De Clerck
Publisher: Springer
ISBN: 3319300849
Category : Technology & Engineering
Languages : en
Pages : 525
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Book Description
Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics & Laser Vibrometry, Volume 8.Proceedings of the 34th IMAC, A Conference and Exposition on Dynamics of Multiphysical Systems: From Active Materials to Vibroacoustics, 2016, the eighth volume of ten from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Structural Dynamics, including papers on: • Processing Modal Data • Rotating Machinery • Vibro Acoustics • Laser Vibrometry • Teaching Practices • Hybrid Testing • Reduced Order Modeling
