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This study presents a constitutive model for clays featuring an energy-based damage mechanism to simulate cyclic stiffness degradation. The model introduces the cumulative dissipated energy as a hardening variable and includes an activation energy threshold to trigger damage. The model builds on the SANICLAY framework with a bounding surface formulation and is implemented in PLAXIS for geotechnical applications. Model capabilities in capturing the rate of stiffness degradation and its dependency on the cyclic stress ratio are shown against data on Cloverdale clay.

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Modelling Energy Dissipation of Clays During Cyclic Loading

  • 会议论文

  • 发表日期：

    2026年

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  • F. Palmieri,
  • D. M. G. Taborda

摘要

This study presents a constitutive model for clays featuring an energy-based damage mechanism to simulate cyclic stiffness degradation. The model introduces the cumulative dissipated energy as a hardening variable and includes an activation energy threshold to trigger damage. The model builds on the SANICLAY framework with a bounding surface formulation and is implemented in PLAXIS for geotechnical applications. Model capabilities in capturing the rate of stiffness degradation and its dependency on the cyclic stress ratio are shown against data on Cloverdale clay.