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Uporaba polimerov za temeljenje strojev in konstrukcij = The use of polymers for the foundation of machines and structuresEmri, Igor ; Cvelbar, Robert ; Samarin, MatjažRazne vrste gum, ki spadajo v skupino časovno odvisnih materialov, se pogosto uporablja za dušenje konstrukcij in temeljenje strojev. Gume imajo temperaturo steklastega prehoda pri zelo nizkih ... temperaturah, tipično na intervalu, -20°C > T_g > -50°C, zato se pri sobnih temperaturah nahajajo v ravnotežnem stanju. V tem stanju gume posedujejo linearno elastične lastnosti, ki se pri nekaterih vrstah ohranjajo vse do zelo velikih deformacij. Med procesom deformiranja se del deformacijske energije disipira v obliki toplote. V dinamičnih analizah ponavadi popišemo vedenje tovrstnih materialov z Voigt-ovim modelom, ki ga sestavljata paralelno vezana dušilka in vzmet. Ugotovljeno je bilo, da je Voigtov model primeren za modeliranje dinamičnega vedenja gumijastih materialov, kot na primer SBR, pri nižjih frekvencah vzbujanja, nekje do 100 Hz, kar zadovolji veliko večino klasičnih inženirskih aplikacij kot so, na primer, pasivne izolacije strojev in konstrukcij. Pri višjih frekvencah napaka napovedi hitro narašča, posebno pri napovedi dušenja.Source: Zbornik del (Str. 309-317)Type of material - conference contribution ; adult, seriousPublish date - 2001Language - slovenianCOBISS.SI-ID - 4679707
Author
Emri, Igor |
Cvelbar, Robert |
Samarin, Matjaž
Topics
polimeri |
materiali časovno odvisni |
temeljenje strojev |
analize dinamične
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Database name | Field | Year |
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Emri, Igor | 04316 |
Cvelbar, Robert | 12661 |
Samarin, Matjaž | 20245 |
Source: Personal bibliographies
and: SICRIS
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