12.6 A squeeze film damper is used to stop the motion and damp the kinetic energy of an overhead crane. The damper consi

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12 6 A Squeeze Film Damper Is Used To Stop The Motion And Damp The Kinetic Energy Of An Overhead Crane The Damper Consi 1 (44.26 KiB) Viewed 51 times

12.6 A squeeze film damper is used to stop the motion and damp the kinetic energy of an overhead crane. The damper consists of two flat, parallel steel plates 2 m in the side-leakage direction and 0.1 m long separated by a 1-mm-thick layer of oil with viscosity 0.1 Pa-s. When the overhead crane hits the damper, the oil is pressed out from between the plates and the oil layer becomes thinner. Calculate the damping force at the first moment of impact and the instantaneous retardation if the speed at impact is 0.2 m/s and the crane mass is 2000 kg. Also calculate the damping force at the first moment of impact if the crane carries a 10-ton load in a wire.