Deformation and failure characteristics of sandstone subjected to true‐triaxial unloading: An experimental and numerical study

• Published in: Fatigue & fracture of engineering materials & structures Vol. 44; no. 7; pp. 1862 - 1882
• Main Authors: Xiao, Fan, Jiang, De‐Yi, Wu, Fei, Chen, Jie, Zhang, Jian‐Zhi, Liu, Wei
• Format: Journal Article
• Language: English
• Published: Oxford Wiley Subscription Services, Inc 01.07.2021
• Subjects: Axial stress; Bearing capacity; Cracks; Discrete element method; discrete element simulations; failure mechanism; Failure modes; Inhomogeneity; maximum principal stress; Sandstone; Shear; true‐triaxial unloading

In this research, we conducted both laboratory experiments and discrete element simulations to investigate the influence of maximum principal stress level on true‐triaxial unloading behaviors of sandstone samples. The results show that as the level of σ1 at the unloading point increases, the ultimat...