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Film damping often occurs in microsystems in which a thin gas film covers a vibrating structure’s surface or is squeezed between two structures. The film dissipates energy from the moving structures and subsequently imposes a damping effect. Film damping can be an unwanted phenomenon, but it can also be used as a controlling mechanism for the transient operation of a component.
Modeling squeezed and sliding films involves coupling the modified Reynolds
equation with the equations for the structural displacements.