Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Paulius Ragauskas"'
Publikováno v:
Vibration, Vol 7, Iss 1, Pp 177-195 (2024)
In studies of structural mechanics, modal analysis, presented in this paper, is an important tool for analyzing the vibration of an object and its frequencies. In modal analysis, different modes of vibration and the frequencies that generate them are
Externí odkaz:
https://doaj.org/article/6750b7149d1f4f669caf3316cff47974
Publikováno v:
Applied Sciences, Vol 14, Iss 8, p 3530 (2024)
The optimization of the geometry of a centrifugal fan is performed at maximum power and high-efficiency design points (DPs) to improve impeller efficiency. Two design variables defining the shape of fan blade are selected for the optimization. The op
Externí odkaz:
https://doaj.org/article/c83cd3103f9345b691ae1ec96c9c7967
Autor:
Dmitrij Šešok, Paulius Ragauskas
Publikováno v:
Lietuvos Matematikos Rinkinys, Vol 47, Iss spec. (2021)
In the paper the global optimization problem of truss systems is studied. The genetic algorithms are employed for the optimization. As the objective function the structure mass is treated; the constraints include equilibrium, local stability and othe
Externí odkaz:
https://doaj.org/article/d02af6713fb44187a0d33abe229ed1b8
Autor:
Paulius Ragauskas, Rimantas Belevičius
Publikováno v:
Aviation, Vol 13, Iss 4 (2009)
Present paper describes the facilities of composite material properties identification technique using specimen vibration tests, genetic algorithms, finite elements analysis and specimen shape optimization. In identification process the elastic const
Externí odkaz:
https://doaj.org/article/72ec4b329e334c45b88c97f13d2563a2
Autor:
Vytautas Turla, Simona Grigaliūnienė, Artūras Kilikevičius, Jonas Sidaravicius, Paulius Ragauskas
Publikováno v:
Solid State Phenomena. :91-96
One of the indirect tensile identification methods is the measurement of the structure of the response to the vibration excitation. Then this response is simulated using digital methods. If the similarity to the response structure is achieved, the el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ca571c5661686afa7f36512c7f0806a
https://doi.org/10.4028/www.scientific.net/ssp.220-221.91
https://doi.org/10.4028/www.scientific.net/ssp.220-221.91
Publikováno v:
Solid State Phenomena. :144-147
Performance of optical table with pneumatic vibration isolators is analyzed within 2–50 Hz frequency range. Specific vibrational excitation platform with a vibrator of the frequency range of 1–50 Hz in one of three directions were tested.The foll
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdaac3de7a1dc3a6df6a3375bf012f91
https://doi.org/10.4028/www.scientific.net/ssp.220-221.144
https://doi.org/10.4028/www.scientific.net/ssp.220-221.144
Publikováno v:
Solid State Phenomena. :132-135
The study results of the historic narrow-gage railway steel truss bridge built in the last century and still used are provided in this paper. Only one of the spans results is provided herein. Field tests with the original locomotive were carried out
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbcfe0e1096f41cbb3c0f9510f24516b
https://doi.org/10.4028/www.scientific.net/ssp.220-221.132
https://doi.org/10.4028/www.scientific.net/ssp.220-221.132
Publikováno v:
Engineering Mechanics. Concise theory and examples
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4ec518410027c4ab8deeea22b0d19ac
https://doi.org/10.20334/1544-s
https://doi.org/10.20334/1544-s
Autor:
Simona Grigaliūnienė, Vytautas Turla, Eugenijus Jurkonis, Artūras Kilikevičius, Paulius Ragauskas, Jonas Sidaravicius
Publikováno v:
Mechanics. 20
Elastic characteristics of plain paper differ from prints elastic characteristics due to coating. For the identi-fication of the elastic characteristics of prints a methodo-logy based on experimental vibration tests and calculations using FEM mathema
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::194047dbc0d1547bd0c8558c089ba2a4
https://doi.org/10.5755/j01.mech.20.5.7526
https://doi.org/10.5755/j01.mech.20.5.7526
Publikováno v:
Teorinės mechanikos aiškinamasis uždavinynas
Leidinio tikslas – padėti neakivaizdinių studijų studentams savarankiškai įsisavinti teorinės mechanikos kursą, t.y. atlikti namų darbus, pasiruošti kontroliniams darbams bei egzaminui. Leidinyje galima išskirti tris dalis: pirmoje dalyje
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1698682a952f96a04fd2010319944a81
http://dspace1.vgtu.lt/handle/1/1453
http://dspace1.vgtu.lt/handle/1/1453