Modeling consolidation of soft clay by developing a fractional differential constitutive model in conjunction with an intelligent displacement inversion method

Studying the constitutive relation of soft clays is of critical importance for fundamentally understanding their complex consolidation behavior. This study proposes a fractional differential constitutive model in conjunction with an intelligent displacement inversion method based on the classic part...

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Bibliographic Details
Published inPloS one Vol. 17; no. 9; p. e0275034
Main Authors Liu, Zhen, Hu, Wei, Ming, Weihua, Xiong, Shenghua, Zhou, Cuiying, Zhang, Lihai
Format Journal Article
LanguageEnglish
Published San Francisco Public Library of Science 30.09.2022
Public Library of Science (PLoS)
Subjects
Accuracy
Artificial intelligence
Calculus
Clay
Computer and Information Sciences
Consolidation
Constitutive models
Constitutive relationships
Deformation
Earth Sciences
Efficiency
Evaluation
Genetic algorithms
Inversion
Mathematical models
Mathematical optimization
Modelling
Optimization
Parameter estimation
Parameter identification
Particle swarm optimization
Physical Sciences
Properties
R&D
Research & development
Research and Analysis Methods
Rheological properties
Rheology
Shear strain
Soft clay
Support vector machines
Swarm intelligence
Viscoelasticity
Viscosity
China
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Summary:Studying the constitutive relation of soft clays is of critical importance for fundamentally understanding their complex consolidation behavior. This study proposes a fractional differential constitutive model in conjunction with an intelligent displacement inversion method based on the classic particle swarm optimization for modeling the deformation behavior of soft clay. The model considered the rheological properties of soft clay at different consolidation stages. In addition, statistical adaptive dynamic particle swarm optimization-least squares support vector machines were implemented to identify the model parameters efficiently. The accuracy and effectiveness of the model were validated using available experimental results. Finally, the application results showed that the proposed model could efficiently simulate coupling properties of soft clay’s primary and secondary consolidations.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Competing Interests: The authors have declared that no competing interests exist.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0275034