Dynamic stability loss and post-critical behaviour of an auto-parametric non-linear system with three degrees of freedom

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F09%3A00399324" target="_blank" >RIV/68378297:_____/09:00399324 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Dynamic stability loss and post-critical behaviour of an auto-parametric non-linear system with three degrees of freedom
Original language description
Slender structures exposed to a strong vertical component of an earthquake excitation are endangered by auto-parametric resonance effect. This non-linear dynamic process in a post-critical regime caused heavy damages or collapses of many towers, bridgesand other structures due to earthquake attack in the epicenter area. If an amplitude of a vertical harmonic excitation in a structure foundation exceeds a certain limit, vertical response on the structure top looses its stability and a dominant horizontal response component arises. In subcritical linear regime only semi-trivial solution being represented by the vertical response component is observed, while horizontal components remain trivial. Therefore, vertical and horizontal response components areindependent. In post-critical regime (auto-parametric resonance) the dynamic non-linear interaction of vertical and horizontal response components occurs.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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