Method for damping vibrations and a method for mounting the device

A damping element for damping vibrations in a vibration surface of a vibration body supported by said damping element, the damping element comprising:

• first holding members for holding said damping element at the vibration surface, said first holding members including first mutually co-operating form grip members for form grip between said damping element and at least one of the vibration surface and an intervening fastening element fixedly attached to the vibration surface;
• and
• second holding members for holding the vibration body, which is only a dead weight, at said damping element, said second holding members including second mutually co-operating form grip members for form grip between said damping elements and the vibration body,
• wherein both the first and second form grip members include a recess with a gripping surface for transferring vibrations, said damping element being tuned to damp the vibrations of the vibration surface within a selected frequency range by bringing the vibration body into vibrations which are phase shifted essentially across the symmetry axis of the damping elements relative to the vibrational movements of the vibration surface and in so doing, creating forces which counteract the vibrations of the vibration surface, and said damping element being tuned to the selected frequency range based upon choice of dimensions of the cross sectional area of the damping element and choice of material of the damping element.

A device for damping vibrations in a vibration surface, the device comprising:

• a damping element with an axis of symmetry;
• and
• vibration means for cooperating with the damping element to damp the vibrations of the vibration surface within a selected frequency range by vibrating across the symmetry axis of the damping element and phase shifted relative to the vibrations of the vibration surface to create forces that counteract the vibrations of the vibration surface, the vibration means serving only as a dead weight;
• wherein the damping element includes
• a first holding member to hold the damping element at the vibration surface, the first holding member having first mutually co-operating form grip members for form grip between the damping element and at least one of the vibration surface and an intervening fastening element fixedly attached to the vibration surface, and
• a second holding member to hold the vibration means at the damping element, the second holding member having second mutually co-operating form grip members for form grip between the damping element and the vibration means,
• wherein both the first and the second form grip members include a recess with a gripping surface for transferring vibrations, and
• wherein the damping element includes an cavity that opens to a base surface of the damping element, the damping element being tuned to the selected frequency range based upon dimensions of the cross sectional area of the damping element and material of the damping element.