On passive damping in machine tool hybrid structural parts

Hybrid materials combining steel or cast iron with fibre particle composites have a good potential for lightweight machine tool structural design high damping ratio. These are analyzed in the paper focus on improvement of components and assemblies. Fibre were selected as elements hybrid structure. The designed low-density, stiffness-oriented reinforcements, which bonded to build metal parts conventionally. applied filler into hollows parts. Both composite structures presented possibility reduce mass component due reduction wall thickness (fibre composite) removal heavy ribbing (particle composites) influence parts’ static dynamic stiffness. structures, light-weight welded steel, tested case studies using experimental modal analysis methods. Experimental was used main approach identification ratio basic coupon level, followed by testing stand-alone configuration ending part assemblies testing. successful improving single However, mounted an assembly shows only less significant improvement. results demonstrate importance caused connecting interfaces.