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Fiber element formulation for inelastic frame analysis

Formulacija fiber elementa prilikom nelinearne analize ramova

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2016
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Authors
Kostić, Svetlana M.
Deretić-Stojanović, Biljana
Article (Published version)
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Abstract
The paper discusses two formulations for the fiber based distributed plasticity beam/column element. For force based and displacement based formulations, basic details and main differences are emphasized. The differences in results of analysis when elements with these two formulations are used are demonstrated on two numerical examples. The first example involves the nonlinear static pushover analysis of low-rise frame with distributed element loading. The second example is nonlinear time history analysis of two-story frame subjected to earthquake loading. The differences in global and local response depending on the used finite element discretization are shown. In conclusion, the advantages of force based formulation and directions for the use of the two elements are summarized.
U radu su prikazane dve formulacije fiber konačnog elementa raspodeljene plastičnosti. Za metodu sila i metodu deformacija, ukazano je na osnovne razlike dve metode. Razlike u rezultatima analize koje se dobijaju primenom fiber elementa prema ove dve formulacije prikazane su putem dva numerička primera. Prvi primer obuhvata statičku pushover analizu rama s raspodeljenim opterećenjem duž greda. Drugi primer je nelinearna dinamička analiza dvospratnog rama izloženog zemljotresnom opterećenju. Prikazane su razlike kod dobijenog globalnog i lokalnog odgovora u zavisnosti od formulacije i diskretizacije rama. U zaključku, rezimirane su primene dve formulacije fiber elementa i date napomene u vezi s njihovim korišćenjem.
Keywords:
fiber based beam/column element / distributed plasticity / force formulation / displacement formulation / fiber konačni element / raspodeljena plastičnost / metoda sila / metoda deformacija
Source:
Građevinski materijali i konstrukcije, 2016, 59, 2, 3-13
Publisher:
  • Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd
Projects:
  • Towards development of sustainable cities: influence of traffic induced vibrations on buildings and humans (RS-36046)

DOI: 10.5937/grmk1602003K

ISSN: 2217-8139

WoS: 000381278400001

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URI
http://grafar.grf.bg.ac.rs/handle/123456789/788
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