Determination of Dynamic Properties of a Steel Hollow Section Filled with Composite Mineral Casting

摘要

As steel hollow sections used in machine tools usually provide appropriate stiffness but rather low damping, the aim of this study was to determine whether this can be improved by composite filling. Experimental tests were performed on hollow sections filled with two types materials with different size fractions and resin adhesives. A steel hollow section without any filling was used as reference. Based on the damping coefficient determined using the resonance curve and static stiffness, we selected a more adequate type of filling with respect to dynamic properties, mass and costs. The identified parameters served as input data for a finite element model of a steel hollow section.