Accession Number : ADP000034

Title :   Optimum Distribution of Additive Damping for Vibrating Beam Structures,


Personal Author(s) : Lunden,Roger ; Akesson,Bengt

Report Date : 1981

Pagination or Media Count : 6

Abstract : Cost and weight effectiveness of concentrated and distributed additive damping has been studied for linear systems (discrete and continuous) under prescribed harmonic loads and/or displacements. Increases in stiffness and mass due to the additive damping are included. Redistribution of an initially uniformly applied additive damping (viscoelastic layer) has been numerically and experimentally investigated for beam structures. An optimal redistribution has typically been found to reduce amplitudes of resonant responses by about 50 percent (level reduction by 6 dB) with the cost or weight of the damping treatment kept constant. One application has been to vibration isolation of a damped skeletal light-weight machine foundation. (Author)

Descriptors :   *Structural engineering, *Optimization, *Beams(Structural), *Vibration, *Damping, Structural mechanics, Structural response, Structural analysis, Distribution, Cost effectiveness, Weight reduction, Linear systems, Harmonics, Loads(Forces), Displacement, Stiffness, Mass, Viscoelasticity, Vibration isolators, Numerical methods and procedures

Distribution Statement : APPROVED FOR PUBLIC RELEASE