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Vibration tests of nine-story steel frame building
Nine-story steel frame building has been subjected to extensive series of forced resonance tests; seven translational and three torsional modes were investigated in detail; mode in which floor slabs vibrated horizontally as free-free beams was excited; stiffness and damping matrices were calculated from experimentally determined modal properties; damping values were found to be considerably lower than those usually mentioned in literature; damping was found to increase linearly with resonant frequencies; consistent, but small increases in damping values were found as amplitude was increased; damping mechanism is well represented by "relative" dashpots. (see also U S Naval Research Laboratory -- Shock and Vibration Bul 35 pt 2 Jan 1966 p 1-20)
Vibration tests of nine-story steel frame building
Nine-story steel frame building has been subjected to extensive series of forced resonance tests; seven translational and three torsional modes were investigated in detail; mode in which floor slabs vibrated horizontally as free-free beams was excited; stiffness and damping matrices were calculated from experimentally determined modal properties; damping values were found to be considerably lower than those usually mentioned in literature; damping was found to increase linearly with resonant frequencies; consistent, but small increases in damping values were found as amplitude was increased; damping mechanism is well represented by "relative" dashpots. (see also U S Naval Research Laboratory -- Shock and Vibration Bul 35 pt 2 Jan 1966 p 1-20)
Vibration tests of nine-story steel frame building
ASCE -- Proc (J Eng Mechanics Div)
Nielsen, N.N. (author)
1966
30 pages
Report
English
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