ROTOR BLADE FOR A TURBOMACHINE AND TURBOMACHINE

Damper stacks (70), rotor blades (26, 30), and turbomachines are provided. A rotor blade (26, 30) includes a main body including a shank (38) and an airfoil (36) extending radially outwardly from the shank (38). The rotor blade (26, 30) further includes a damping passage (60) defined in the main body, the damping passage (60) extending radially through the main body. The rotor blade (26, 30) further includes a damper stack (70) disposed within the damping passage (60), the damper stack (70) including a plurality of damper pins (72), each of the plurality of damper pins (72) in contact with a neighboring damper pin (72).