Validation of a simple hypoplastic constitutive model for overconsolidated clays

Hypoplastic constitutive models are able to describe history dependence using a single nonlinear tensorial function with a set of parameters. A hypoplastic model including a structure tensor for consolidation history was introduced in our previous paper (Wang and Wu in Acta Geotechnica, 2020, https:...

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Veröffentlicht in:Acta geotechnica 2021, Vol.16 (1), p.31-41
Hauptverfasser: Wang, Shun, Wu, Wei
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description Hypoplastic constitutive models are able to describe history dependence using a single nonlinear tensorial function with a set of parameters. A hypoplastic model including a structure tensor for consolidation history was introduced in our previous paper (Wang and Wu in Acta Geotechnica, 2020, https://doi.org/10.1007/s11440-020-01000-z ). The present paper focuses mainly on the model validation with experiments. This model is as simple as the modified Cam Clay model but with better performance. The model requires five parameters, which are easy to calibrate from standard laboratory tests. In particular, the model is capable of capturing the unloading behavior without introducing loading criteria. Numerical simulations of element tests and comparison with experiments show that the proposed model is able to reproduce the salient features of normally consolidated and overconsolidated clays.
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subjects Clay
Complex Fluids and Microfluidics
Constitutive models
Engineering
Foundations
Geoengineering
Geotechnical Engineering & Applied Earth Sciences
Hydraulics
Laboratory tests
Mathematical models
Parameters
Research Paper
Soft and Granular Matter
Soil Science & Conservation
Solid Mechanics
Tensors
Unloading
title Validation of a simple hypoplastic constitutive model for overconsolidated clays
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