PLACING SMALL CONSTRAINED LAYER DAMPING PATCHES ON A PLATE TO ATTAIN GLOBAL OR LOCAL VELOCITY CHANGES

Experimental results show how structural intensity can predict where to locate small constrained layer damping patches to attain either local or global velocity changes on a plate. If damping is applied to a region of low shearing reactive structural intensity magnitude, a local velocity change is seen. If damping is applied to a region of high shearing reactive structural intensity magnitude, a global velocity change is seen. In addition, the researchers noted that large damping patches produce global velocity changes. The filtering process needed to calculate the structural intensity was partially automated to reduce computational time. © 1995, Acoustical Society of America. All rights reserved.