The characteristics of filling and compact surface of dry sand moulding for EPC was simulated by three dimensional discrete element method

in which a special EPS pattern for testing was designed

to understand the motion characteristics of sand colony under different vibration dimension and directions. The flow morphology of sand colony in the EPS pattern was presented during the vibration process

and the effects of vibration dimension and direction on the motion of sand colony were described. The results show that the optimization combination between the filling motion of sand colony in-tube and vibration form exhibits consistent with the direction

at the same time

gravity and tube direction have a great influence on sand colony motion

which leads to particularity of Z-tube and Z-vibration.