Application of a memory surface model in predicting the sand response under cyclic loading

Riccardo Corti, Andrea Diambra

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

This paper investigates the potentials of the Memory Surface Hardening model to predict the mechanical response of a Quartz Sand under drained cyclic loading conditions. The constitutive model is implemented in a kinematic hardening, bounding-surface and critical state framework. A new surface, the memory surface, is introduced to retain memory of previous stress history and to define a region of increased stiffness. The memory surface is subjected to two uncoupled hardening mechanisms linked to the experienced contractive and dilative plastic volumetric strains: the memory surface expands when the soil experiences contractive plastic volumetric strains; the memory surface contracts when the soil experiences dilative plastic volumetric strains. The model will be validated against drained cyclic triaxial test data and it will be shown that the model can simulate the magnitude of the accumulated strains for different relative densities, cyclic amplitudes and average stress ratios, while some hints for further improvement will also be provided.
Original languageEnglish
Title of host publicationProceedings of the 8th International Offshore Site Investigation and Geotechnics Conference 2017
PublisherSociety for Underwater Technology
Volume1
ISBN (Print)9780906940570
DOIs
Publication statusPublished - 1 Oct 2017

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