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Dinamično sklapljanje struktur v frekvenčni domeni
Kodrič, Miha (Author), Čepon, Gregor (Mentor) More about this mentor... This link opens in a new window, Boltežar, Miha (Co-mentor)

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Abstract
Zaradi tendence z vidika časovne optimizacije, razvoj strmi k uporabi naprednih metod, kot tudi eliminaciji redundantnih razvojnih korakov. Iz tega razloga pristopi numeričnega modeliranja kompleksnih struktur na vseh nivojih strmijo k razvoju metod dinamičnega sklapljanja podstruktur. Te omogočajo nepovezano analizo podsistemov ter njihovo združevanje v celotno strukturo sistema. Glede na predstavljeno je tendenca razvoja usmerjena v nadgradnjo eksperimentalnih metod sklapljanja v smeri povečanja robustnosti in uporabnosti. Ključen napredek na tem področju predstavlja razvoj t.i. hibridne metode sklapljanja, ki hkrati privzame robustnost ter učinkovitost numeričnih metod dinamskega sklapljanja kot tudi realne dinamske parametre sistema preko eksperimentalnih metod dinamskega sklapljanja. V okviru magistrske naloge je predstavljena nadgradnja uveljavljene hibridne metode kombiniranja ekvivalentnih modelov. Preko razvoja kriterijev za identifikacijo in izločanja t.i. slabih meritev je izveden velik napredek v smeri povečanja robustnosti in uporabnosti metode. Prikazan je postopek, kjer se t.i. slabe meritve nadomešča z rekonstruiranimi frekvenčno prenosnimi funkcijami z uporabo metod razširjanja in implementacije numeričnega modela. Končno je izvedena primerjava razvite metode z obstoječo metodo kombiniranja ekvivalentnih modelov na primeru sklapljanja dveh delov nosilca.

Language:Slovenian
Keywords:podstrukturiranje dinamično sklapljanje podstrukturiranje v frekvenčni domeni hibridni model SEMM
Work type:Master's thesis (m2)
Tipology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Year:2018
Publisher:[M. Kodrič]
UDC:004.42:519.61(043.2)
COBISS.SI-ID:16391195 This link opens in a new window
Views:761
Downloads:350
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Secondary language

Language:English
Title:Dynamic coupling in Frequency Domain
Abstract:
In recent time the research in the field of mechanical engineering in focused towards the development of advanced time-optimized numerical methods. For this reason, the modeling approaches within structural dynamics are orientated towards the use of modern substructuring techniques. According to the presented issues, the tendency in the field of experimental dynamic substructuring is to develop a more efficient, robust and practical methods. The majority of the development is therefore orientated towards the development of a hybrid-substructuring methods. This kind of methods combine efficiency and robustness of the numerical dynamics substructuring methods and the real-system properties though the experimental dynamics substructuring methods. In this thesis the extension of well-established hybrid method called System Equivalent Model Mixing in presented. By developing the criterions for identification of so called bad measurements the major improvement in the sense of applicability and robustness of the method is presented. The method enables the reconstruction of frequency response functions associated with bad measurements using the expansion techniques by considering the consistency of numerical model. Finally, the comparison of developed method is presented with basic system equivalent model mixing formulation by coupling two identical beams.

Keywords:substructuring dynamic coupling frequency based substructuring hybrid model SEMM

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