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Rotational Hardening and Uniqueness of Critical State Line in Clay Plasticity

Taiebat, Mahdi / Dafalias, Yannis F.

RotationalHardening (RH) is the constitutive ingredient of clay plasticity modelswhich allows the description of more realistic response than typical isotropic models under various loading conditions, and in particular under K₀ consolidation, where isotropic models fail to capture the correct K₀ value. Additional restrictions must be imposed to prevent excessive rotationwhen loaded at very high stress ratios. One important aspect of a RH law is its ability to obtain a unique critical state line (CSL) in the e–p space, while maintaining a realistic response before critical state failure. Some RH laws are critically examined and a novel proposition is outlined.

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Rotational Hardening and Uniqueness of Critical State Line in Clay Plasticity

Taiebat, Mahdi / Dafalias, Yannis F.

RotationalHardening (RH) is the constitutive ingredient of clay plasticity modelswhich allows the description of more realistic response than typical isotropic models under various loading conditions, and in particular under K₀ consolidation, where isotropic models fail to capture the correct K₀ value. Additional restrictions must be imposed to prevent excessive rotationwhen loaded at very high stress ratios. One important aspect of a RH law is its ability to obtain a unique critical state line (CSL) in the e–p space, while maintaining a realistic response before critical state failure. Some RH laws are critically examined and a novel proposition is outlined.

Rotational Hardening and Uniqueness of Critical State Line in Clay Plasticity

Taiebat, Mahdi / Dafalias, Yannis F.

RotationalHardening (RH) is the constitutive ingredient of clay plasticity modelswhich allows the description of more realistic response than typical isotropic models under various loading conditions, and in particular under K₀ consolidation, where isotropic models fail to capture the correct K₀ value. Additional restrictions must be imposed to prevent excessive rotationwhen loaded at very high stress ratios. One important aspect of a RH law is its ability to obtain a unique critical state line (CSL) in the e–p space, while maintaining a realistic response before critical state failure. Some RH laws are critically examined and a novel proposition is outlined.

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Title:

Rotational Hardening and Uniqueness of Critical State Line in Clay Plasticity

Additional title:

Springer Ser.Geomech.,Geoengineer.

Contributors:

Yang, Qiang (editor) / Zhang, Jian-Min (editor) / Zheng, Hong (editor) / Yao, Yangping (editor) / Taiebat, Mahdi (author) / Dafalias, Yannis F. (author)

Published in:

Constitutive Modeling of Geomaterials ; Chapter: 28 ; 223-230

Springer Series in Geomechanics and Geoengineering

Publication date:

2013-01-01

Size:

8 pages

ISBN:

978-3-642-32814-5 , 978-3-642-32813-8

ISSN:

1866-8763 , 1866-8755

DOI:

https://doi.org/10.1007/978-3-642-32814-5_28

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Void Ratio , Stress Ratio , Yield Surface , Triaxial Compression , Plastic Strain Rate Engineering , Geoengineering, Foundations, Hydraulics , Geotechnical Engineering & Applied Earth Sciences

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