This work presents a new staggered multilevel material identification procedure for phenomenological critical state plasticity models. The emphasis is placed on cases in which available experimental data and constraints are insufficient for calibration. The key idea is to create a secondary virtual experimental database from high-fidelity models, such as discrete element simulations, then merge both the actual experimental data and secondary database as an extended digital database (EDD) to determine material parameters for the phenomenological macroscopic critical state plasticity model. The calibration procedure therefore consists of two steps. First, the material parameters of the discrete (distinct) element method (DEM) simulations are identified via the standard optimization procedure. Then, the calibrated DEM simulations are used to expand the experimental database with new simulated loading histories. This expansion of database provides additional constraints necessary for calibration of the phenomenological critical state plasticity models. The robustness of the proposed material identification framework is demonstrated in the context of the Dafalias–Manzari plasticity model.
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January 2016
Research-Article
Determining Material Parameters for Critical State Plasticity Models Based on Multilevel Extended Digital Database
Yang Liu,
Yang Liu
Department of Civil Engineering
and Engineering Mechanics,
Columbia University,
New York, NY 10027
and Engineering Mechanics,
Columbia University,
New York, NY 10027
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WaiChing Sun,
WaiChing Sun
Assistant Professor
Department of Civil Engineering
and Engineering Mechanics,
Columbia University,
New York, NY 10027
e-mail: wsun@columbia.edu
Department of Civil Engineering
and Engineering Mechanics,
Columbia University,
New York, NY 10027
e-mail: wsun@columbia.edu
Search for other works by this author on:
Jacob Fish
Jacob Fish
Department of Civil Engineering
and Engineering Mechanics,
Columbia University,
New York, NY 10027
and Engineering Mechanics,
Columbia University,
New York, NY 10027
Search for other works by this author on:
Yang Liu
Department of Civil Engineering
and Engineering Mechanics,
Columbia University,
New York, NY 10027
and Engineering Mechanics,
Columbia University,
New York, NY 10027
WaiChing Sun
Assistant Professor
Department of Civil Engineering
and Engineering Mechanics,
Columbia University,
New York, NY 10027
e-mail: wsun@columbia.edu
Department of Civil Engineering
and Engineering Mechanics,
Columbia University,
New York, NY 10027
e-mail: wsun@columbia.edu
Jacob Fish
Department of Civil Engineering
and Engineering Mechanics,
Columbia University,
New York, NY 10027
and Engineering Mechanics,
Columbia University,
New York, NY 10027
1Corresponding author.
Contributed by the Applied Mechanics Division of ASME for publication in the JOURNAL OF APPLIED MECHANICS. Manuscript received August 10, 2015; final manuscript received September 15, 2015; published online October 15, 2015. Assoc. Editor: A. Amine Benzerga.
J. Appl. Mech. Jan 2016, 83(1): 011003 (16 pages)
Published Online: October 15, 2015
Article history
Received:
August 10, 2015
Revised:
September 15, 2015
Citation
Liu, Y., Sun, W., and Fish, J. (October 15, 2015). "Determining Material Parameters for Critical State Plasticity Models Based on Multilevel Extended Digital Database." ASME. J. Appl. Mech. January 2016; 83(1): 011003. https://doi.org/10.1115/1.4031619
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