Naslov
A new approach for experimental evaluation of the local added mass

Autori
Sedlar, Damir ; Tomac, Ivan ; Bratović, Mate

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings in Advanced Research in Scientific Areas / Mokrys, Michal ; Badura, Stefan - Žilina : University of Žilina, 2016, 155-160

ISBN
978-80-554-1284-9

Skup
The 5th Advanced Research in Scientific Areas

Mjesto i datum
Žilina, Slovačka, 07.11.2016. - 11.11.2016

Vrsta sudjelovanja
Ostalo

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
local added mass; modal added mass; partially submerged beam; modal reduction

Sažetak
The phenomena of added (virtual) mass of the submerged structure exposed to vibration are evaluated experimentally using delta residual force vector. The proposed approach is based on the experimentally identified modal parameters i.e. natural frequencies and natural modes ; however it requires the finite element model of structure, as well. The added mass is detected as fraction of finite element mass (change of element mass) and therefore good estimate of the model matrices is required. The procedure involves the model update and the reduction of system matrices and their respective roles have been discussed. Depending on the available number of modes it is possible to determine the distribution of the added mass along of the submerged part of structure. The theoretical background is provided and proposed technique of detection of locally added mass is compared to the classical concept of modal added mass.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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