-This paper presents an investigation of comminution mechanisms and microstructure development within simulated fault gouge. We sheared 4.0 mm thick layers of quartz sand between rough steel surfaces using a triaxial apparatus. The layers were sheared at constant effective normal stress of 100 MPa, under saturated drained conditions, and at 45 ° to the axis of cylindrical steel samples. Porosit...

The second paper of this series adopts particle modeling (PM) to simulation of dynamic fracture phenomena in homogeneous and heterogeneous materials, such as encountered in comminution and blasting processes in mining industry. As the basis for such simulations, we first develop a new method to prevent particles from topologically interpenetrating themselves within the material domain, when act...

With the aim of revealing effects low temperature on vibration impact comminution performance wheat bran, dynamic bran at different temperatures was simulated by using LS-DYNA. According to collision relationship between grinding medium and a three-component numerical calculation model established. The essence analyzed, solution method based LS-DYNA proposed. On this basis, finite element obtai...

Patients who sustain an acetabular fracture are a challenge to the orthopedic surgeon because of the inherent difficulty of the fracture and its treatment. Acetabular fractures in elderly patients add another level of complexity with additional co-morbidities associated with age such as osteoporotic bone, the fracture type and comminution, medical conditions, and insufficient bone stock to supp...