As shown in FIG dimensional finite element model, a head pressure of 5mm diameter cylinder of rock 100mm × 100mm × 100mm cube of. Since the rock is much greater than the pressure head, which border on the deformation, the influence of the displacement and stress fields can be ignored. Since the distribution of forces and the geometry of the model is symmetrical, in order to reduce computation time, using a quarter of the model. Further, the cylinder head is regarded as a rigid body provided with a reference point on rigid bound, limiting their freedom only in the Z-direction. Simultaneously, a completely fixed constraints rocky bottom, symmetrical constraint is applied perpendicular to the X and Y axes of the A and B sides respectively of the rock. In the simulation, the static load applied to 1 kN, applied to the dynamic load frequency 100hz - between 150Hz, amplitude 0.5 kN - between 1 kN, the influence on the analysis of dynamic load and deformation and displacement of rock stress field.
The simulation results:
Author: LiSQ
