The study on the failure difference of deep hard rock based comparison between conventional and true triaxial tests can help us better understand fracture processes characteristics mass. Therefore, this article carries out a comparative analysis under stress states. Within scope study, it is found that brittle–ductile transformation properties be intuitively reflected in stress–strain curve mod...

A constitutive model based on two–dimensional unstructured Galerkin finite volume method (GFVM) is introduced and applied for analyzing nonlinear behavior of cracked concrete structures in equilibrium condition. The developed iterative solver treats concrete as an orthotropic nonlinear material and considers the softening and hardening behavior of concrete under compression and tension by using...

Abstract Deformation tests at room temperature have been carried out on a series of in situ Mg-?Mg17Al12 composites with volume fraction ?Mg17Al12 phase varying between 20% and 60%. Regardless the fraction, these that are prepared by solidification consist magnesium-rich dendrites eutectic mixture. The mixture is made magnesium fibres embedded matrix formed phase, hard brittle complex metallic ...

the ground reaction curve (grc) is a vital component of the convergence-confinement method, which possesses many applications in the underground space designs. it defines a relation between the tunnel wall deformations and the ground pressure acting on the tunnel walls. generally, grc includes descending and ascending branches. according to many researchers, the descending branch trend for the ...

Metallic glasses are known to have a remarkably robust yield strength, admitting Weibull moduli as high for crystalline engineering alloys. However, their postyielding behavior is strongly varying, with large scatter in both flow stress levels and strains at failure. Using x-ray tomography, we reveal how strain-dependent internal evolution of shear-band cavities underlies this unpredictable res...