Determination of some Dynamic Characteristics of Membrane Magneto Hydraulic Pushers using Mathematical Modeling

The equation describing liquid pressure located between armature and core during their attraction is written for the membrane magneto hydraulic pusher discussed in the work. Resulting from solution of the boundary problem set for the mentioned equation there is obtained the time distribution of pressure in liquid. Through integration of the pressure value on the pusher’s electromagnet core ring a magnitude of a displacement resistance force for an oil to be squeezed is determined, based on which the ratio between time and armature stroke is obtained. An opinion is expressed on the reasonability of reduction of electromagnet armature ring-shaped end area with the purpose of armature attraction time reduction that may be implemented, if the armature end surface will have a narrow ring-shaped projection. The conclusion on the optimal time of armature attraction is drawn.