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Behaviour of thin-walled cylindrical and conical shells: Carbon vs. stainless steel

Poređenje ponašanja tankih cilindričnih i konusnih ljuski od ugljeničnog i nerđajućeg čelika

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2019
993.pdf (1.222Mb)
Authors
Kostadinović Vranešević, Kristina
Gluhović, Nina
Dobrić, Jelena
Spremić, Milan
Article (Published version)
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Abstract
Thin-walled cylindrical and conical shells represent one of the most complex structural elements considering their behaviour and susceptibility to buckling. A brief theoretical review including the presentation of different currently available design recommendations is given in this paper. Influence of initial imperfections on nonlinear behaviour of cylindrical and conical shells is also presented through numerical analysis. Shells with different wall thicknesses and different values of initial imperfections, but constant length and diameter of shell are analysed. Numerical analysis includes materially and geometrically nonlinear analysis of cylindrical and conical shells, using experimentally obtained stress-strain relation of carbon steel and stainless steel. Material nonlinearity and initial geometrical imperfections resulted in significantly lower buckling resistance of shells.
Tanke kružne cilindrične i konusne ljuske predstavljaju jedan od složenijih konstruktivnih elemenata u pogledu ponašanja i osetljivosti na izbočavanje. U radu je dat kratak teorijski osvrt, s prikazom različitih, trenutno dostupnih, proračunskih preporuka. Prikazana je numerička analiza uticaja početnih imperfekcija na nelinearno ponašanje kružnih cilindričnih i konusnih ljuski. Analizirane su ljuske različite debljine zida, s konstantnim vrednostima dužine i prečnika ljuske, kao i s različitim vrednostima početnih imperfekcija. Analiza obuhvata uticaj materijalne i geometrijske nelinearnosti na ponašanje ljuski od ugljeničnog i nerđajućeg čelika, uključujući eksperimentalne krive napon-dilatacija. U radu je pokazano da materijalna nelineranost i početna geometrijska imperfekcija dovode do značajnog pada nosivosti na izbočavanje ljuski.
Keywords:
medium-length shells / post critical behaviour / initial imperfections / buckling / knockdown factor / ljuske srednje dužine / postkritično ponašanje / početne imperfekcije / izbočavanje / redukcioni faktor
Source:
Građevinski materijali i konstrukcije, 2019, 62, 1, 27-42
Publisher:
  • Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd
Projects:
  • Research on condition assessment and improvement methods of civil engineering structures in view of their serviceability, load-bearing capacity, cost effectiveness and maintenance (RS-36048)
  • Energy efficiency enhancement of buildings in Serbia and improvement of national regulative capacity for they are certification (RS-42012)

DOI: 10.5937/GRMK1901027K

ISSN: 2217-8139

WoS: 000462508100003

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URI
http://grafar.grf.bg.ac.rs/handle/123456789/995
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  • Radovi istraživača / Researcher's publications
  • Катедра за материјале и конструкције
  • Катедра за техничку механику и теорију конструкција
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