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Award Abstract #0748111

CAREER: Hybrid Simulation Platform for Seismic Performance Evaluation of Structures Through Collapse

NSF Org: CMMI
Div Of Civil, Mechanical, & Manufact Inn
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Initial Amendment Date: February 14, 2008
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Latest Amendment Date: April 28, 2011
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Award Number: 0748111
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Award Instrument: Standard Grant
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Program Manager: Kishor Mehta
CMMI Div Of Civil, Mechanical, & Manufact Inn
ENG Directorate For Engineering
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Start Date: March 1, 2008
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End Date: February 28, 2014 (Estimated)
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Awarded Amount to Date: $503,226.00
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Investigator(s): Gilberto Mosqueda gmosqueda@ucsd.edu (Principal Investigator)
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Sponsor: SUNY at Buffalo
402 Crofts Hall
Buffalo, NY 14260-7016 (716)645-2634
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NSF Program(s): Structural and Architectural E,
ENG DIVERSITY ACTIVITIES
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Program Reference Code(s): 036E, 039E, 040E, 043E, 1045, 1057, 1187, 1576, 1637, 7680, 7974, 9102, 9179, CVIS, 1504
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Program Element Code(s): 1637, 7680

ABSTRACT

The research objective of this Faculty Early Career Development (CAREER) Program project is to enhance the hybrid simulation methodology to evaluate the performance of large scale structures loaded up to collapse. Hybrid simulation, which combines numerical simulation with experimental simulation of structural elements, provides a more realistic, reliable, and economical approach to testing structural systems under earthquake loads. Fundamental contributions, addressing issues related to numerical, experimental and boundary condition errors and assumptions, will be made in the development of algorithms used in testing and validation procedures. In particular, the computational platform will provide capabilities for robust implicit integration algorithms and fault-tolerant distributed control strategies to enable testing of complex structural systems utilizing geographically distributed testing of its substructures. The resulting testing and simulation platform will be used to evaluate the seismic performance of large-scale steel moment frame structures from the onset of damage through collapse. Only key subassemblies will be experimentally tested and the global system response will be captured through interaction with the numerical model. The efficacy of hybrid simulations to predict collapse will be validated by comparing the results recently obtained from full scale testing in Japan.

Upon its completion, the improved hybrid simulation platform developed in this project can be used to generate complete fragilities of structural components and systems from the onset of damage through collapse as required for next-generation performance-based earthquake engineering. It can also be used to assess the collapse safety margin of buildings inherent in current building codes. In particular, our understanding of the seismic performance of steel buildings will be improved through the large-scale hybrid testing program and numerical simulation studies. An integrated education and outreach plan will lead to development of new curriculum material and training of graduate and undergraduate students in various stages of structural design process such as preliminary design, computer simulation, design revision, construction and physical testing. The outreach activities are planned in partnership with the University at Buffalo Graduate School of Education and local schools districts, and they will include underrepresented students.


PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH

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Ahmadizadeh, M. and Mosqueda, G.. "Online energy-based error indicator for assessment of numerical and experimental errors in hybrid simulation," Engineering Structures, v.31, 2009, p. 1987. 

Ahmadizadeh, M; Mosqueda, G. "Online energy-based error indicator for the assessment of numerical and experimental errors in a hybrid simulation," ENGINEERING STRUCTURES, v.31, 2009, p. 1987.   

Ahmadizadeh, M; Mosqueda, G. "Hybrid Simulation with Improved Operator-Splitting Integration Using Experimental Tangent Stiffness Matrix Estimation," JOURNAL OF STRUCTURAL ENGINEERING-ASCE, v.134, 2008, p. 1829.   

Mosqueda, G; Ahmadizadeh, M. "Iterative implicit integration procedure for hybrid simulation of large nonlinear structures," EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, v.40, 2011, p. 945.   

Wang, T., Mosqueda, G., Jacobsen, A. and Cortes-Delgado, M.. "Performance evaluation of a distributed hybrid test framework to reproduce the collapse behavior of a structure," Earthquake Engineering and Structural Dynamics, v.2, 2012.

CONFERENCE PROCEEDINGS PRODUCED AS A RESULT OF THIS RESEARCH

Mosqueda, G; Ahmadizadeh, M. "Implicit Numerical Integration in Hybrid Simulation with Iteration Strategy for Experimental Substructures," in American Control Conference 2009., 2009, p. 5241-5246. 

BOOKS/ONE TIME PROCEEDING

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Mosqueda, G. and Ahmadizadeh, M.. "Integration methods for improved stability and accuracy of hybrid simulation", 03/01/2008-02/28/2009, "14th World Conference on Earthquake Engineering",  2008, "14th World Conference on Earthquake Engineering, Beijing, China, October 2008".

Mosqueda, G. and Ahmadizadeh, M.. "Integration methods for improved stability and accuracy of hybrid simulation", 03/01/2009-02/28/2010, "14th World Conference on Earthquake Engineering",  2008, "14th World Conference on Earthquake Engineering, Beijing, China, October 2008".

Mosqueda, G., and Ahmadizadeh, M.. "Implicit numerical integration for hybrid simulation of complex structural systems", 03/01/2009-02/28/2010, "3rd International Conference on Advances in Experimental Structural Engineering",  2009, "San Francisco, October 2009".

Mosqueda, G. and Ahmadizadeh, M.. "Integration methods for improved stability and accuracy of hybrid simulation", 03/01/2010-02/28/2011, "14th World Conference on Earthquake Engineering",  2008, "14th World Conference on Earthquake Engineering, Beijing, China, October 2008".

Mosqueda, G., and Ahmadizadeh, M.. "Implicit numerical integration for hybrid simulation of complex structural systems", 03/01/2010-02/28/2011, "3rd International Conference on Advances in Experimental Structural Engineering",  2009, "San Francisco, October 2009".

Mosqueda, G., Cortes-Delgado*, M. and Wang, T.. "Substructuring techniques for hybrid simulation of complex structural systems", 03/01/2010-02/28/2011, "9th US National and 10th Canadian Conference on Earthquake Engineering",  2010, "EERI, Toronto, July 2010".

4. Wang, T., Jacobsen, A., Cortes-Delgado, M., and Mosqueda*, G.. "Distributed online hybrid tests of a four story steel moment frame using flexible test scheme", 03/01/2010-02/28/2011, "9th US National and 10th Canadian Conference on Earthquake Engineering",  2010, "EERI, Toronto, July 2010".

Mosqueda, G., Cortes-Delgado, M. and Del Carpio, M.. "Substructuring techniques for hybrid simulation of complex structural systems", 03/01/2010-02/28/2011, "Proceedings of the 2011 NSF Engineering Research and Innovation Conference",  2011, "January 4-7, 2011 Atlanta, GA".

Mosqueda, G. and Ahmadizadeh, M.. "Integration methods for improved stability and accuracy of hybrid simulation", 03/01/2011-02/29/2012, "14th World Conference on Earthquake Engineering",  2008, "14th World Conference on Earthquake Engineering, Beijing, China, October 2008".

Mosqueda, G., and Ahmadizadeh, M.. "Implicit numerical integration for hybrid simulation of complex structural systems", 03/01/2011-02/29/2012, "3rd International Conference on Advances in Experimental Structural Engineering",  2009, "San Francisco, October 2009".


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