Triaxial loading–unloading test data for sandstone under different confining pressures

Description

This dataset contains the raw triaxial loading–unloading test data for sandstone specimens tested under confining pressures of 0, 5, 10, 20, and 30 MPa. The data include axial stress, confining pressure, axial strain, radial strain, volumetric strain, loading–unloading stages, and cycle information. The experiments support the study entitled “Damage evolution and a coupled elastoplastic–damage constitutive model for sandstone under cyclic loading–unloading.” Processed and derived results are reported in the associated article. The VUMAT source code is not included because it is subject to institutional intellectual-property restrictions.

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