Seismic Hybrid Testing using FMI-based Co-Simulation

2021 ◽  
Author(s):  
Cláudio Gomes ◽  
Giuseppe Abbiati ◽  
Peter Gorm Larsen
Keyword(s):  
Hybrid Testing

Passivity Control in Real-Time Hybrid Testing

2018 ◽  
Author(s):  
L. D. Hashan Peiris ◽  
Andrew R. Plummer ◽  
Jonathan L. Du Bois
Keyword(s):  
Real Time ◽  
Hybrid Testing

scholarly journals Real-Time Hybrid Testing of Strut-Braced Wing Under Aerodynamic Loading Using an Electrodynamic Actuator

2020 ◽  
Vol 44 (6) ◽  
pp. 821-835
Author(s):  
V. Ruffini ◽  
C. Szczyglowski ◽  
D. A. W. Barton ◽  
M. Lowenberg ◽  
S. A. Neild
Keyword(s):  
Real Time ◽  
Hybrid Testing ◽  
Aerodynamic Loading

The Effect of Interface Delays in Substructuring Experiments

2011 ◽  
Author(s):  
Maria Rosaria Marsico ◽  
David J. Wagg ◽  
Simon A. Neild
Keyword(s):  
Real Time ◽  
Physical Model ◽  
Test Piece ◽  
Full Scale ◽  
Alternative Solution ◽  
Hybrid Testing ◽  
Physical Test ◽  
Time Dynamic ◽  
Control Techniques ◽  
Dynamic Substructuring

Normally, for feasibility reasons, tests must be conducted on scaled structures, although scaling can introduce other issues. An alternative solution is to experimentally test the part of the structure that is of particular interest, at full or closer to full scale, while numerically modeling the remainder of the structure. This method is termed real-time dynamic substructuring or hybrid testing. To complete the substructure interaction the forces required to impose the displacements on the physical model are measured and applied to the model in real-time. One of the key challenges is to compensate for the dynamics associated with the actuators that are imposing the displacements on the physical test-piece. Ideally these actuators would act instantaneously however even with sophisticated control techniques interface errors are inevitable. We used an example system to study the effects of interface error modeled as a delay, on the accuracy of the overall substructuring technique.

On the nonlinear performance of a tuned sloshing damper under small amplitude excitation

2019 ◽  
Vol 25 (21-22) ◽  
pp. 2695-2705 ◽  
Author(s):  
Anuja Roy ◽  
Zili Zhang ◽  
Aparna (Dey) Ghosh ◽  
Biswajit Basu
Keyword(s):  
Small Amplitude ◽  
Numerical Study ◽  
Nonlinear Behavior ◽  
Wave Theory ◽  
Small Mass ◽  
Mass Ratio ◽  
Hybrid Testing ◽  
Low Mass ◽  
Low Mass Ratio ◽  
Nonlinear Performance

This paper explores the potential of a tuned sloshing damper (TSD) in the control of small amplitude vibrations, which is often important from serviceability considerations, through the use of a relatively small mass ratio of the damper liquid. To investigate the nonlinear behavior of the TSD, real-time hybrid testing is conducted in which a single rectangular tank containing water constitutes the prototype TSD. The structure is modeled as a multi-degree-of-freedom system. Two different base input motions, namely harmonic and synthetically generated broad-banded input, are considered. The sensitivity of the TSD performance to tuning ratio vis-à-vis low mass ratio is studied. The experimental results are compared with those obtained from a numerical study carried out using the shallow water wave theory-based nonlinear, semi-empirical model, for the simulation of the sloshing motion of the TSD liquid (water). Results indicate that in the tuned condition, even with a low mass ratio, the TSD is highly effective in the suppression of the small amplitude vibrations, which is underestimated by the simulation model.

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