This work is devoted to anisotropic continuum-damage mechanics in the quasi-static, isothermal, small-strain setting. We propose a framework for damage evolution based on compliance tensor as primary variable, context of generalized standard models dissipative solids. Based observation that Hookean strain energy density linear elasticity jointly convex and tensor, we design thermodynamically co...

In this paper, the solution of a moving Volterra-type screw dislocation in an orthotropic layer, bonded between two piezoelectric layers is obtained using complex Fourier transform. The dislocation solution is then employed as strain nuclei to derive singular integral equations for a medium weakened by multiple moving cracks. These equations, which are classified as, Cauchy singular equations, ...

The Freeman FT4 Powder Rheometer has been reported to describe well the powder flow behaviour in instances where other techniques fail. We use DEM to simulate the FT4 operation for slightly cohesive large glass beads at a range of strain rates. The curved impeller is shown to be beneficial in comparison to a flat blade as the variation of shear stress across the blade is reduced. The shear stre...

We probe flows of soft, viscous spheres near the jamming point, which acts as a critical point for static soft spheres. Starting from energy considerations, we find nontrivial scaling of velocity fluctuations with strain rate. Combining this scaling with insights from jamming, we arrive at an analytical model that predicts four distinct regimes of flow, each characterized by rational-valued sca...

In practical engineering, coal burst is usually caused by the combination of high geo-stress and dynamic loading. To study response in conditions, numerical models a coupled static–dynamic split Hopkinson pressure bar (SHPB) test system were established, based on which impact tests for specimens at different speeds static pre-stress levels conducted. The mechanical properties, energy characteri...