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Vpliv frekvence obremenjevanja na dinamično upogibno trdnost smrekovine [Elektronski vir] : diplomsko delo = The effect of frequency on the dynamic strength of spruce : B. Sc. ThesisLipovec Zupanc, EnejV nalogi smo se osredotočili na dinamične obremenitve, s katerimi se med uporabo lesa pogosto srečujemo. Povsod, kjer ima les nosilno vlogo oziroma je zasnovan kot konstrukcijski element, je lahko ... izpostavljen neugodnim vremenskim vplivom (veter) ali nanj vpliva dinamično okolje (tresljaji, vibracije,…), kar sčasoma privede do utrujanja materiala. Poleg vpliva sile obremenjevanja, smo se osredotočili tudi na vpliv pogostosti ponovitve obremenitve v določenem časovnem obdobju, kar predstavlja frekvenca obremenjevanja. Primerjali smo frekvenci 5 in 10 Hz, pri vsaki od teh, smo določili 3 velikostne razrede sile obremenjevanja. Teste smo izvedli na smrekovini (Picea abies). Prišli smo do ugotovitev, da ima velikostni razred sile obremenjevanja znotraj iste frekvence velik vpliv, saj se z vsakim povečanjem sile obremenjevanja zmanjša dinamična trdnost smrekovine, kar se odraža v doseženih obremenitvenih ciklih. Prav tako se s povečanjem frekvence obremenjevanja poslabšajo dinamične lastnosti, kar je bolj izrazito pri višjih silah obremenjevanja. Zaradi velikega raztrosa rezultatov, bi bilo potrebno izvesti večje število preskusov. Pri številu vzorcev smo se morali omejiti, saj so testi utrujanja zelo dolgotrajni.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [E. Lipovec Zupanc], 2023Language - slovenianCOBISS.SI-ID - 166558467
Author
Lipovec Zupanc, Enej
Other authors
Fajdiga, Gorazd |
Humar, Miha |
Straže, Aleš
Topics
dinamična trdnost |
frekvenca |
utrujanje |
smrekovina |
les |
dynamic strength |
frequency |
fatigue |
pine wood
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Year | Impact factor | Edition | Category | Classification | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Lipovec Zupanc, Enej | |
Fajdiga, Gorazd | 15683 |
Humar, Miha | 19106 |
Straže, Aleš | 18149 |
Source: Personal bibliographies
and: SICRIS
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