An analytical and experimental study on dampening material effects on the dynamic behavior of free-free aluminum sheets

R. Khorasani, S. A. Hosseini Kordkheili, H. Parviz
2021 Engineering Solid Mechanics  
This work aims to present an experimentally verified analytical solution to examine damping properties of systems including viscoelastic treatments. Although there are several methods for characterizing the behavior of three-layer damping systems, the RKU method is the most frequently used one. In this paper, this method is modified such a way that to be applied for a five-layer damping system. The achieved analytical relations are then employed to study the effects of a four-layer
more » ... orbing coating on the dynamic behavior of an aluminum sheet with free-free boundary conditions. Since the vibration-damping properties of the coating are unknowns, its loss factor and shear modulus are experimentally extracted based on the ASTM E756-05 standard method. The comparison between the analytical solution and performed modal tests expresses the efficiency of the presented method.
doi:10.5267/j.esm.2021.1.002 fatcat:axnjybgv5rfyrbncakzoshgxre