Full-scale dynamic testing and modal identification of a coupled floor slab system

2012 ◽  
Vol 37 ◽  
pp. 167-178 ◽  
Author(s):  
S.K. Au ◽  
Y.C. Ni ◽  
F.L. Zhang ◽  
H.F. Lam
Keyword(s):  
Dynamic Testing ◽  
Full Scale ◽  
Modal Identification ◽  
Floor Slab

Pseudo-dynamic testing of a full-scale two-storey steel building with RBS connections

2020 ◽  
Vol 212 ◽  
pp. 110494 ◽  
Author(s):  
Sabatino Di Benedetto ◽  
Antonella Bianca Francavilla ◽  
Massimo Latour ◽  
Giovanni Ferrante Cavallaro ◽  
Vincenzo Piluso ◽  
...  
Keyword(s):  
Dynamic Testing ◽  
Full Scale ◽  
Steel Building ◽  
Rbs Connections

scholarly journals Field Measurement and Modal Identification of a Coupled Floor Slab System

2011 ◽  
Vol 14 ◽  
pp. 1318-1325
Author(s):  
S.K. Au ◽  
Y.C. Ni ◽  
F.L. Zhang ◽  
H.F. Lam
Keyword(s):  
Field Measurement ◽  
Modal Identification ◽  
Floor Slab

Model Updating of Evolutionary Structures

1995 ◽  
Author(s):  
Marie B. Levine-West ◽  
James W. Melody
Keyword(s):  
Model Updating ◽  
Dynamic Testing ◽  
Search Algorithm ◽  
Modal Identification ◽  
Physical Parameters ◽  
Test Model ◽  
Modal Strain Energy ◽  
Modal Expansion ◽  
Accelerate Convergence ◽  
Base Structure

Abstract A methodology is proposed for dynamic testing, modal identification and model correlation of structures which are assembled in an evolutionary manner. The methodology prescribes initial testing of the base structure without any attached components. As components are added onto the base structure, additional tests are performed. Three testing options are proposed, all of which enable to update the physical parameters of the components only using a Bayesian Estimation Technique (BET). Improvements to former BET implementations have been made, all of which contribute to higher fidelity models and more efficient computational times. These improvements include an optimal modal expansion technique, an error localization technique based on element modal strain energy errors, a model reduction option with component mode synthesis, and a line search algorithm to accelerate convergence. The proposed methodology has been successfully tested on an actual evolutionary structure, and significant improvement from the updated pre-test model are demonstrated.

Seismic Design, Analysis and Testing of a Friction Steel Braced Frame System for Multi-Storey Buildings in Vancouver

2018 ◽  
Vol 763 ◽  
pp. 1077-1086 ◽  
Author(s):  
Lucia Tirca ◽  
Ovidiu Serban ◽  
Robert Tremblay ◽  
Yan Jiang ◽  
Liang Chen
Keyword(s):  
Energy Dissipation ◽  
Seismic Response ◽  
Dynamic Testing ◽  
Seismic Energy ◽  
Elastic Stiffness ◽  
Full Scale ◽  
Experimental Program ◽  
Test Program ◽  
Braced Frame ◽  
Seismic Displacement

This article describes the application of the Friction Braced Frames (FBF) system for 4-and 10-storey buildings located in Vancouver, BC, in Canada. The FBF is coupled with a secondary moment resisting frame that provides back-up elastic stiffness and re-centring capacity that contribute to reduce storey drifts and more evenly distribute seismic energy dissipation over the frame height. In this study, the energy dissipation components consist of Pall friction devices and the system was designed using a conventional force-based method. The moment frame was proportioned to remain essentially elastic under the design seismic displacements. The seismic response of the system is examined through nonlinear response history dynamic analysis. An exhaustive test program was developed to verify the capacity of the system to sustain the anticipated seismic demand. Full-scale testing was performed on brace sub-assemblages and individual brace specimens equipped with friction elements. The experimental program included full-scale dynamic testing under real-time seismic displacement histories as obtained from response history analysis. The numerical simulations and test program showed that the dual FBF system represents an effective system for enhanced seismic response of multi-storey building applications in high seismic regions.

Impulse Testing of Brickwork Sewers

1995 ◽  
Vol 14 (1) ◽  
pp. 43-54 ◽  
Author(s):  
A. Sibbald ◽  
C. A. Fairfield Beng ◽  
M. C. Forde Beng
Keyword(s):  
Dynamic Testing ◽  
Frequency Domain Analysis ◽  
Full Scale ◽  
Test Method ◽  
Scale Model ◽  
Integrity Assessment ◽  
Analysis Techniques ◽  
Non Destructive ◽  
Investigation Procedure

This paper describes a study into the application of dynamic testing to the assessment of egg shaped brickwork sewer rings. An investigation procedure using impulsive force hammer excitation with various time and frequency domain analysis techniques is proposed for the location of structural discontinuities in such sewers. The experimental results from a full scale model sewer, and a full scale, in-situ field test on a similar sewer are presented. The chosen non-destructive test method proved to be a convenient tool for the integrity assessment of brickwork sewers.

Simulated Seismic Laboratory Load Testing of Full-Scale Buildings

1996 ◽  
Vol 12 (1) ◽  
pp. 57-86 ◽  
Author(s):  
Frieder Seible ◽  
Gilbert Hegemier ◽  
Akira Igarashi
Keyword(s):  
Measurement Errors ◽  
Dynamic Testing ◽  
The United States ◽  
Full Scale ◽  
Seismic Load ◽  
Masonry Building ◽  
Load Testing ◽  
Tight Coupling ◽  
Limit States ◽  
Reinforced Masonry

Full-scale building systems have been tested to-date in Japan, the United States, and Europe under controlled laboratory conditions with simulated seismic loads, to determine behavior and design limit states and to calibrate predictive analytical and design models. Seismic load simulation for these tests consisted of increasing cyclic load/deformation patterns with predetermined load distribution or, where possible, of loading patterns derived experimentally from the measured building response in conjunction with updated displacement time-histories through pseudo-dynamic testing. Difficulties in the pseudo-dynamic testing of stiff multi-story buildings due to the tight coupling between individual actuators, stability problems with the numerical integration alorithms, measurement errors and error growth, as well as the control of undesirable torsional modes, were addressed with innovations in the testing hardware and in the actuator control alorithms in the first US full-scale building test of a 5-story reinforced masonry building.

scholarly journals Dynamic testing of the elastic modulus and shear modulus of full-scale laminated veneer lumber

BioResources ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. 8273-8288
Author(s):  
Yujie Huang ◽  
Si Chen ◽  
Assima Dauletbek ◽  
Xiaojun Yang ◽  
Jun Wang ◽  
...  
Keyword(s):  
Elastic Modulus ◽  
Shear Modulus ◽  
Dynamic Testing ◽  
Full Scale ◽  
Test Method ◽  
Modal Frequency ◽  
Laminated Veneer Lumber ◽  
Modal Test ◽  
Excitation Method ◽  
Do So

The feasibility of the dynamic testing was explored for the elastic modulus and shear modulus of full-scale laminated veneer lumber in batches at the production site. In order to do so, dynamic testing and analysis, involving a hammer blow and detection of frequencies, were carried out on the laminated veneer lumber free-plate placed in two ways: suspended and placed on a sponge. The results showed that the mode shape and modal frequency value of the suspended laminated veneer lumber free-plate obtained from the modal test were consistent with those of the specimens placed on the sponge. The elastic modulus and shear modulus values of the laminated veneer lumber free-plate obtained in sponge mode based on the transient excitation method were 3.99% and 3.08% higher than the elastic modulus and shear modulus values of the laminated veneer lumber obtained in suspension mode obtained based on the modal test method. The feasibility and reliability of the elastic modulus and shear modulus values obtained by the laminated veneer lumber free-plate in sponge mode were verified.

Sign in / Sign up

Export Citation Format

Share Document