Abstract
The present work aims at studying the mechanism of damping and its theoretical evaluation for layered and jointed cantilever beams with a number of equispaced connecting bolts resulting in uniform distribution of pressure at the interfaces. Experiments have been conducted on a number of specimens for comparison with numerical results. Intensity of interface pressure, its distribution characteristics, relative spacing of the connecting bolts, dynamic slip ratio, frequency and amplitude of vibration are found to play a vital role in the damping capacity of such layered and jointed structures. It is established that the damping capacity of structures jointed with connecting bolts can be improved substantially with an increase in number of layers maintaining uniform intensity of pressure distribution at the interfaces.
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