Abstract: Based on manufacturing technology and throttling characteristics of MR material, non-dimensional parameters effected MR hydraulic characteristics are decided, and comparability theory of units are used to derive 7 comparability criterion of hydraulic characteristics for cylindrical MR porous material which provides sufficient materials for experimental research. This work reduces the experimental work and it is valuable for the research of porous material.

Key words: Comparability theory, Hydrodynamic characteristics, Metal rubber, Porous material