1. centre of percussion
The point in a suspended body, one free to swing like a pendulum, at which an impulse may be applied, perpendicular to the plane through the axis of the body and through the axis of support without shock to the axis. It is identical with the centre of oscillation
, q. v., when such lies within the body.http://www.definitions.net/definition/centre%...
Centre Of Percussion
That point in a body revolving about a fixed axis into which the whole force or motion is collected; it is, therefore, that point of a revolving body which would strike an obstacle with the greatest effect, and from this property it has received the name of the centre of percussion. The centres of percussion and of oscillation
are generally treated separately, but the two centres are in the same point
, and therefore their properties are the same.http://chestofbooks.com/crafts/mechanics/Engi...
The center of percussion is the point on an object where a perpendicular impact will produce translational and rotational forces which perfectly cancel each other out at some given pivot point, so that the pivot will not be moving momentarily after the impulse. The same point is called the center of oscillation
for the object suspended from the pivot as a pendulum.http://en.wikipedia.org/wiki/Center_of_percussionHervorhebungen