Název:
Accuracy and numerical efficiency of approximate method for complex eigensolution of structure with specialized damping device
Autoři:
Hračov, Stanislav Typ dokumentu: Příspěvky z konference Konference/Akce: Engineering mechanics 2018 /24./, Svratka (CZ), 20180514
Rok:
2018
Jazyk:
eng
Abstrakt: The paper provides a detailed parametric analysis of the recently proposed approximate method for complex eigensolution of non-classically damped structures. This method is based on a combination of perturbation and incremental approaches and is applicable to the classically damped structures equipped with a specialized passive damping device. The numerical efficiency in terms of the required calculation times and the accuracy is demonstrated on a model of an existing structure for various combination of computational parameters. Wide numerical simulations revealed the selection of real eigenmodes of undamped system used in the approximate eigensolution as the most important parameter affecting the final accuracy.
Klíčová slova:
complex eigensolution; non-classical damping; passive damper; perturbation method Číslo projektu: GC17-26353J (CEP) Poskytovatel projektu: GA ČR Zdrojový dokument: Engineering mechanics 2018. Book of full texts, ISBN 978-80-86246-88-8, ISSN 1805-8248