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<p>This paper addresses the performance of HySand_base, a constitutive model for sand in the hyperplasticity framework, for a wide range of triaxial tests. Quantitative and qualitative comparisons between test data and simulation results are drawn for the Karlsruhe fine sand database developed by Wichtmann and Triantafyllidis (Acta Geotech 11:739–761, 960 10.1007/s11440-015-0402-z, 2016a; Acta Geotech 11:763–774, 10.1007/s11440-015-0412-x, 2016b). HySand_base is also evaluated against common limitations of constitutive models for sand identified by Duque <i>et al.</i> (Acta Geotech 17:2235–2257. 10.1007/s11440-021-01418-z, 2022). The calibration of the model and the procedures for initialisation and implementing test simulations are explained, using the example of the Karlsruhe fine sand. HySand_base performs well for a variety of conditions: for drained and undrained tests, monotonic and cyclic tests, virgin or preloaded tests, stress or strain controlled. It performs particularly well when compared across a range of densities, capturing accurately the rate at which pore pressure initially builds-up in undrained tests, and the number of cycles to liquefaction for stress and strain-controlled tests.</p>

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Appraisal of the HySand_base constitutive model against the Karlsruhe fine sand database

  • 期刊论文

  • 发表日期：

    2026年3月11日

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  • Luc E. J. Simonin,
  • Guy T. Houlsby,
  • Miad Saberi,
  • Byron W. Byrne

摘要

This paper addresses the performance of HySand_base, a constitutive model for sand in the hyperplasticity framework, for a wide range of triaxial tests. Quantitative and qualitative comparisons between test data and simulation results are drawn for the Karlsruhe fine sand database developed by Wichtmann and Triantafyllidis (Acta Geotech 11:739–761, 960 10.1007/s11440-015-0402-z, 2016a; Acta Geotech 11:763–774, 10.1007/s11440-015-0412-x, 2016b). HySand_base is also evaluated against common limitations of constitutive models for sand identified by Duque et al. (Acta Geotech 17:2235–2257. 10.1007/s11440-021-01418-z, 2022). The calibration of the model and the procedures for initialisation and implementing test simulations are explained, using the example of the Karlsruhe fine sand. HySand_base performs well for a variety of conditions: for drained and undrained tests, monotonic and cyclic tests, virgin or preloaded tests, stress or strain controlled. It performs particularly well when compared across a range of densities, capturing accurately the rate at which pore pressure initially builds-up in undrained tests, and the number of cycles to liquefaction for stress and strain-controlled tests.