Complas 2023

COMPLAS 2023

A Hypoplastic Model Considering Particle Breakage for Monotonic and Cyclic Loading of Granular Sand

Qian, Haoyong (Beijing University of Technology)
Wu, Wei (Universität für Bodenkultur Wien)
Xu, Chengshun (Beijing University of Technology)
Du, Xiuli (Beijing University of Technology)

In session: THm-1801 - - IS1801 - Advances In Modeling Soils Under Cyclic and High-Cyclic Loading

Please login to view abstract download link

We present a novel hypoplastic model for the granular material accounting for both particle breakage effect and cyclic loading mobility. The degree of particle breakage is evaluated by a relative breakage ratio, which is the function of input energy during the loading process. The relative breakage ratio is incorporated in the dynamic critical state line to reflect the dilatancy evolution. In addition, an ingredient related to the internal microstructure of sand is introduced into the hypoplastic model combined with the intergranular strain concept to describe modulus degradation with the increase of cyclic number. The model performance is demonstrated by comparing the model predictions with the experimental results under different test conditions.