Ref: Liu, L., Deisman, N. & Chalaturnyk, R. Elastic Stiffness Modelling of Opalinus Clay Based on Laboratory Measurements with Implications for In-situ Testing. Rock Mech Rock Eng (2022). https://doi.org/10.1007/s00603-021-02768-6
Includes: 1. MATLAB element testing routine; 2. Abaqus code for borehole deformation modeling with UMAT Fortran subroutine.