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Relationship between element-level and contact-level parameters of micromechanical and upscaled plasticity models for granular soils
https://orcid.org/http://orcid.org/0000-0002-0333-6621
The models for stress–strain behavior of granular soils can be generally categorized into two approaches: the conventional plasticity approach and the micromechanics-based approach. In this work, we upscale a micromechanical model to a commonly used isotropic hardening plasticity model by assuming the “same” constitutive laws at different scales. The mathematically derived relationships between element-level and contact-level parameters are presented based on the condition that the two models would predict the same mechanical response, and a parameter calibration procedure is proposed. A comparative study is then conducted to investigate the differences of the predicted element behaviors arisen from the two models.
Relationship between element-level and contact-level parameters of micromechanical and upscaled plasticity models for granular soils
https://orcid.org/http://orcid.org/0000-0002-0333-6621
The models for stress–strain behavior of granular soils can be generally categorized into two approaches: the conventional plasticity approach and the micromechanics-based approach. In this work, we upscale a micromechanical model to a commonly used isotropic hardening plasticity model by assuming the “same” constitutive laws at different scales. The mathematically derived relationships between element-level and contact-level parameters are presented based on the condition that the two models would predict the same mechanical response, and a parameter calibration procedure is proposed. A comparative study is then conducted to investigate the differences of the predicted element behaviors arisen from the two models.
Relationship between element-level and contact-level parameters of micromechanical and upscaled plasticity models for granular soils
https://orcid.org/http://orcid.org/0000-0002-0333-6621
The models for stress–strain behavior of granular soils can be generally categorized into two approaches: the conventional plasticity approach and the micromechanics-based approach. In this work, we upscale a micromechanical model to a commonly used isotropic hardening plasticity model by assuming the “same” constitutive laws at different scales. The mathematically derived relationships between element-level and contact-level parameters are presented based on the condition that the two models would predict the same mechanical response, and a parameter calibration procedure is proposed. A comparative study is then conducted to investigate the differences of the predicted element behaviors arisen from the two models.
Relationship between element-level and contact-level parameters of micromechanical and upscaled plasticity models for granular soils
Acta Geotech.
Liu, Yang (author) / Chang, C. S. (author)
Acta Geotechnica ; 15 ; 1779-1798
2020-07-01
20 pages
Article (Journal)
Electronic Resource
English
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