Abstract
Previous work on damping of plate flexural vibrations by constrained viscoelastic layers is generalized to apply to beam-like structures. A previously presented “structural parameter” is redefined so as to permit a unified analysis of damping obtained in systems consisting of two elastic structures with a viscoelastic interlayer. Such systems include: sandwich plates, plates with attached damping tapes, beams with inserts, and two beams mounted flange-to-flange. Design optimization with respect to this structural parameter is discussed in conjunction with other design considerations. Some of the effects of end constraints and discontinuities of the main structure or the constraining member are presented. (Results presented in part grew out of studies supported by the U. S. Air Force, Wright Air Development Division, and the U. S. Navy, Bureau of Ships.)
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