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dc.contributor.authorLong, F.X.en_US
dc.contributor.authorSarkani, S.
dc.contributor.authorYang, J.N.
dc.date.accessioned2010-07-29T13:29:54Zen_US
dc.date.accessioned2010-08-17T17:06:33Zen_US
dc.date.accessioned2014-02-10T20:27:17Z
dc.date.available2010-07-29T13:29:54Zen_US
dc.date.available2010-08-17T17:06:33Zen_US
dc.date.available2014-02-10T20:27:17Z
dc.date.issued1987en_US
dc.identifier87-0019en_US
dc.identifier.govdocPB88-187851en_US
dc.identifier.urihttp://hdl.handle.net/10477/605en_US
dc.description.abstractAn alternate modal decomposition method for dynamic analysis of non-classically damped structural systems is presented. The resulting decoupled equations contain only real parameters. Hence, the solution can be obtained in the real field. Several procedures are outlined to solve these equations for both deterministic and nonstationary random ground excitations. Prior work has shown that the effect of nonclassical damping may be significant for the response of light equipment attached to a structure. Therefore, the proposed solution technique is applied to find the response of light equipment that is attached to a multi-degree-of-freedom structure. Numerical results obtained from deterministic and nonstationary random vibration analyses indicate that the effect of nonclassical damping on the response of tuned equipment is significant only when the mass ratio and damping ratio of the equipment are small. Under this circumstance, the approximate classically damped solution, i.e., the solution obtained using the undamped modal matrix and disregarding the off-diagonal terms of the resulting damping matrix, is usually unconservative. For detuned equipment, neglecting the effect of nonclassical damping generally results in an equipment response that is close to the exact results. However, for certain equipment detuned at high frequency, neglecting nonclassical damping results in conservative equipment responses.en_US
dc.description.sponsorshipGeorge Washington Universityen_US
dc.format.extent78en_US
dc.titleModal Analysis of Nonclassically Damped Structural Systems Using Canonical Transformationen_US


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