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A comparison of computational models for wrinkling of pressurized shell-core systems
Brank, Boštjan (Avtor), Veldin, Tomo (Avtor), Lavrenčič, Marko (Avtor), Brojan, Miha (Avtor)

URLURL - Izvorni URL, za dostop obiščite https://doi.org/10.1016/j.ijnonlinmec.2020.103611 Povezava se odpre v novem oknu

Izvleček
Four nonlinear computational models for the surface wrinkling of curved shell-core systems under external pressure are presented. Three of the considered finite element models neglect the displacements tangential to the shell surface. Two of the models are static formulations and the other two are derived in the dynamic framework. For the latter, the energy-decaying time-stepping algorithm is applied, which is suitable for numerically stiff problems, such as shell-core systems, characterized by stiff membrane and soft wrinkling deformation modes. In all cases the core is modeled by elastic springs. As a comparative problem we choose the surface wrinkling of pressurized shell-core spheres. In particular, five systems with different material and geometric properties are computed, which have different wrinkle patterns. A good agreement is found between the results of the models as well as with the relevant references, which provide numerical and experimental results. However, it has been observed that our reduced-order models are blind to the prediction of the secondary transformation % from the dimple-like pattern to the labyrinthine pattern. Another conclusion is that a non-tailored (i.e. standard) shell finite element on an elastic foundation combined with the energy-decaying scheme, provides excellent predictions of the surface wrinkle patterns.

Jezik:Angleški jezik
Ključne besede:civil engineering, structures, modeling, surface wrinkling, finite element models, core-shell spheres, energy-decaying
Vrsta gradiva:Znanstveno delo (r2)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FGG - Fakulteta za gradbeništvo in geodezijo
Leto izida:2020
Št. strani:Str. 1-24
Številčenje:Letn. , št.
UDK:624.07:004
ISSN pri članku:0020-7462
DOI:10.1016/j.ijnonlinmec.2020.103611 Povezava se odpre v novem oknu
COBISS.SI-ID:29398019 Povezava se odpre v novem oknu
Število ogledov:283
Število prenosov:77
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Gradivo je del revije

Naslov:International journal of non-linear mechanics
Skrajšan naslov:Int. j. non-linear mech.
Založnik:Pergamon
ISSN:0020-7462
COBISS.SI-ID:25650432 Povezava se odpre v novem oknu

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Številka projekta:J2-1722
Naslov:Numerično modeliranje širjenja razpok v krhkih in duktilnih konstrukcijah

Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
Začetek licenciranja:28.09.2020

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:gradbeništvo, konstrukcije, modeliranje, gubanje površine, numerični modeli, sfere z jedrom in trdim ovojem, disipacija energije

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