Bladed assembly with inter-platform connection by friction member

Abstract

A bladed assembly for a turbomachine includes: a plurality of blades distributed about an axis and each including an airfoil and a platform formed at a free end of the blade. The platform of each blade includes a friction member and an opening that is oblong in a circumferential direction with respect to the axis. The friction member is engaged through the opening formed in the platform of a circumferentially adjacent blade within the bladed assembly with a clearance allowing the friction member to move at least in the circumferential direction within the opening. Mutual separation of the platforms in the circumferential direction during operation due to vibrations of the blades causes the friction member to rub against an edge of the opening and thereby dissipate energy.

Dependencies are inferred from the claim text.