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Analytical and numerical techniques for the dynamic analysis of non-classically damped linear systems
Abstract The paper deals with the use of complex modal analysis for computing the response of linear systems having non-proportional damping. The problem of the approximate evaluation of complex modes is first addressed: a second-order perturbation technique, proposed by other researchers, is adopted and modified in view of the application to the analysis of systems having a large number of degrees of freedom. Frequency domain algorithms for the computation of modal response are then tested and a technique for reducing the computational effort due to the performance of inverse Fourier Transforms is proposed. Two examples of application are finally given.
Analytical and numerical techniques for the dynamic analysis of non-classically damped linear systems
Abstract The paper deals with the use of complex modal analysis for computing the response of linear systems having non-proportional damping. The problem of the approximate evaluation of complex modes is first addressed: a second-order perturbation technique, proposed by other researchers, is adopted and modified in view of the application to the analysis of systems having a large number of degrees of freedom. Frequency domain algorithms for the computation of modal response are then tested and a technique for reducing the computational effort due to the performance of inverse Fourier Transforms is proposed. Two examples of application are finally given.
Analytical and numerical techniques for the dynamic analysis of non-classically damped linear systems
Perotti, Federico (author)
Soil Dynamics and Earthquake Engineering ; 13 ; 197-212
1994-02-15
16 pages
Article (Journal)
Electronic Resource
English
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