Influence from Fraction of Coverage to the Damping Capacity of Partial Constrained Layer Damping Structure

Abstract

In this paper, the influence from fraction of coverage to the damping capacity of partial constrained layer damping structure was studied by single point hammer test with two sides simply supported constraints and finite element simulation based on the theory of modal strain energy. Combining with time domain and vibration acceleration with the composite loss factors from finite element analysis, vibration reduction effect was remarkable with the fraction of coverage from 40% to 80%. The combined result showed that partial constrained layer damping structure with 80% damping layer coverage had better damping capacity.