Pseudodynamic testing and verification of simplified buckling restrained components

Shih-Yu Chu, S. L. Lin, S. C. Lo

Research output: Contribution to conferencePaper

Abstract

The nonlinear behavior of a structure under severe earthquake is difficult to predict if the corresponding mathematical model is unknown or too complicated to be identified. The Pseudo- Dynamic Test (PDT) is a combination of numerical analysis and experimental test that can emulate the dynamic behavior of structures under environmental loading such as seismic event. The step-by-step Newmark explicit integration method is applied together with the help of NI-6031E data acquisition card and INSTRON 8800 material testing machine to conduct the experimental task. In PDT the restoring force of the nonlinear specimen is measured and fed back to the numerical model to predict the displacement of next step. In order to construct a PDT apparatus, the SIMULINK toolbox and the Real-Time Window Target package provided by the MathWorks, Inc. are integrated to serve as the communication medium to the INSTRON 8800 controller. A few critical calibration procedures are also suggested in this study to ensure the precision and accuracy of experimental measurements. A nonlinear hysteresis model of the simplified buckling restrained component (SBRC) are used and identified based on the result of standard loading protocol suggested by AISC. The numerical results are also compared with the experimental data measured from PDT.

Original languageEnglish
Publication statusPublished - 2008 Dec 1
Event11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11 - Taipei, Taiwan
Duration: 2008 Nov 192008 Nov 21

Other

Other11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11
CountryTaiwan
CityTaipei
Period08-11-1908-11-21

Fingerprint

Buckling
Testing
Materials testing
Hysteresis
Numerical analysis
Numerical models
Data acquisition
Earthquakes
Calibration
Mathematical models
Network protocols
Controllers
Communication

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction

Cite this

Chu, S-Y., Lin, S. L., & Lo, S. C. (2008). Pseudodynamic testing and verification of simplified buckling restrained components. Paper presented at 11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11, Taipei, Taiwan.
Chu, Shih-Yu ; Lin, S. L. ; Lo, S. C. / Pseudodynamic testing and verification of simplified buckling restrained components. Paper presented at 11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11, Taipei, Taiwan.
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Chu, S-Y, Lin, SL & Lo, SC 2008, 'Pseudodynamic testing and verification of simplified buckling restrained components' Paper presented at 11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11, Taipei, Taiwan, 08-11-19 - 08-11-21, .

Pseudodynamic testing and verification of simplified buckling restrained components. / Chu, Shih-Yu; Lin, S. L.; Lo, S. C.

2008. Paper presented at 11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11, Taipei, Taiwan.

Research output: Contribution to conferencePaper

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AU - Lin, S. L.

AU - Lo, S. C.

PY - 2008/12/1

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N2 - The nonlinear behavior of a structure under severe earthquake is difficult to predict if the corresponding mathematical model is unknown or too complicated to be identified. The Pseudo- Dynamic Test (PDT) is a combination of numerical analysis and experimental test that can emulate the dynamic behavior of structures under environmental loading such as seismic event. The step-by-step Newmark explicit integration method is applied together with the help of NI-6031E data acquisition card and INSTRON 8800 material testing machine to conduct the experimental task. In PDT the restoring force of the nonlinear specimen is measured and fed back to the numerical model to predict the displacement of next step. In order to construct a PDT apparatus, the SIMULINK toolbox and the Real-Time Window Target package provided by the MathWorks, Inc. are integrated to serve as the communication medium to the INSTRON 8800 controller. A few critical calibration procedures are also suggested in this study to ensure the precision and accuracy of experimental measurements. A nonlinear hysteresis model of the simplified buckling restrained component (SBRC) are used and identified based on the result of standard loading protocol suggested by AISC. The numerical results are also compared with the experimental data measured from PDT.

AB - The nonlinear behavior of a structure under severe earthquake is difficult to predict if the corresponding mathematical model is unknown or too complicated to be identified. The Pseudo- Dynamic Test (PDT) is a combination of numerical analysis and experimental test that can emulate the dynamic behavior of structures under environmental loading such as seismic event. The step-by-step Newmark explicit integration method is applied together with the help of NI-6031E data acquisition card and INSTRON 8800 material testing machine to conduct the experimental task. In PDT the restoring force of the nonlinear specimen is measured and fed back to the numerical model to predict the displacement of next step. In order to construct a PDT apparatus, the SIMULINK toolbox and the Real-Time Window Target package provided by the MathWorks, Inc. are integrated to serve as the communication medium to the INSTRON 8800 controller. A few critical calibration procedures are also suggested in this study to ensure the precision and accuracy of experimental measurements. A nonlinear hysteresis model of the simplified buckling restrained component (SBRC) are used and identified based on the result of standard loading protocol suggested by AISC. The numerical results are also compared with the experimental data measured from PDT.

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Chu S-Y, Lin SL, Lo SC. Pseudodynamic testing and verification of simplified buckling restrained components. 2008. Paper presented at 11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11, Taipei, Taiwan.