METHOD OF DYNAMIC DAMPING AND DYNAMIC DAMPER Russian patent published in 2009 - IPC F16F15/23 F16F15/67 F16F7/116 F16F9/19 E04B1/98 

FIELD: machine building.

SUBSTANCE: tuning to required damping frequency is performed. Dynamic rigidity or transfer factor dip is experimentally determined at first breadboard specimen. Then on increasing damper slit width, tuning frequency is increased along with increasing damping. Thereafter, tuning frequency is decreased by decreasing damper slit width. Aforesaid reduction is performed by increasing the number of slit pairs. Proposed device comprises interconnected pendulums pivoted to protected object. Each pendulum comprises weight suspended to aforesaid object. One object is located above the points of attachment of its suspension to the object, the others being located below aforesaid points. Tight cylindrical barrel is covered with cap and filled with hydraulic fluid. Movable modular hollow piston is arranged inside aforesaid cylindrical barrel fixed between two cylindrical springs. There is a system of channels inside aforesaid piston. It consists of top and bottom covers and uneven number of round plates. Aforesaid slits are formed by flat round rings arranged between aforesaid covers and plates. Former and latter comprise central bores, while even plates have peripheral orifices arranged nearby inner cylindrical surfaces of round rings.

EFFECT: higher efficiency.

2 cl, 3 dwg