Large Deformation Analysis in Geotechnics

Introduction

In geotechnical engineering, numerous problems involve large deformation, such as installation of foundations, tunnel face instability, landslides, etc.. Benefitted from the sustained development of computing power, numerical simulations have become standard methods in geomechanics and its related fields. Adequate simulations with large deformation analysis are helpful for geotechnical design and disaster protection.


Topic 1: Development of edge-based smoothed PFEM

Based on particle finite element method (PFEM), we developed a novel edge-based smoothed PFEM for large deformation analysis.


  • Jin Y-F, Yuan W-H, Yin Z-Y, Cheng Y-M. An edge-based strain smoothing particle finite element method for large deformation problems in geotechnical engineering[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 2020, 44(7): 923-941.
  • Jin Y-F, Yin Z-Y, Yuan W-H. Simulating retrogressive slope failure using two different smoothed particle finite element methods: A comparative study[J]. Engineering Geology, 2020, 279: 105870.


Topic 2: Implementation of advanced soil models in ABAQUS

We implemented advanced soil models via ABAQUS/Explicit and simulated soil collapse, penetration of caisson foundation, and the installation of pile using the ABAQUS/SPH and ABAQUS/CEL.





  • Jin Y-F, Yin Z-Y, Wu Z-X, Daouadji A. Numerical modeling of pile penetration in silica sands considering the effect of grain breakage. Finite Elements in Analysis and Design, 2018, 144: 15-29.
  • Jin Y-F, Yin Z-Y, Wu Z-X, Zhou W-H. Identifying parameters of easily crushable sand and application to offshore pile driving. Ocean Engineering, 2018, 154: 416-429.
  • Jin Z#, Yin Z-Y*, Kotronis P, Li Z, (2019). Advanced numerical modelling of caisson foundations in sand to investigate the failure envelope in the H-M-V space. Ocean Eng., 190: 106394.
  • Yin Z Y, Jin Z, Kotronis P, Wu Z X. Novel SPH SIMSAND-Based Approach for Modeling of Granular Collapse. International Journal of Geomechanics, 2018, 18(11).


Topic 3: Coupled FDM-DEM method

We implemented advanced soil models into finite difference code and coupled with discrete element method, using which we can carry out simulations of engineering scale, such as tunnelling, caisson foundation.



  • Yin Z-Y, Wang P#, Zhang F (2020). Effect of particle shape on the progressive failure of shield tunnel face in granular soils by coupled FDM-DEM method. Tunn. Undergr. Sp. Tech., 100: 103394.