A Simple Breakage Model for Calcareous Sand and Its FE Implementation

L. Cheng, M. S. Hossain, Y. Hu, Y. H. Kim, S. N. Ullah

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This paper reports the development of a particle breakage model within a finite-element (FE) framework based on the modified Mohr-Coulomb model (MMC). A modified form of the strength-dilatancy relationship is used to incorporate additional energy consumed due to particle breakage. A new particle breakage index is introduced and constitutively linked to the mobilized friction angle. The model is verified against carefully conducted drained triaxial tests on medium-dense calcareous sand obtained from offshore Australia as well as other published data. The model is implemented in the FE program ABAQUS for both small strain and large deformation FE analyses in practical field problems. Several important microscopic observations can be made from the proposed model that are not limited to identifying soil regions where particle breakage is maximized. Due to its inherent simplicity, the newly developed model can provide reasonable predictions for soil-structure interaction problems in calcareous sands.

Original languageEnglish
Article number04022065
JournalJournal of Geotechnical and Geoenvironmental Engineering
Issue number9
Publication statusPublished - 1 Sept 2022


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