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Stress resultant plasticity for shells revisited
ID
Dujc, Jaka
(
Avtor
),
ID
Brank, Boštjan
(
Avtor
)
PDF - Predstavitvena datoteka,
prenos
(10,67 MB)
MD5: 5548E062A3BA1D265F97BDF08AF00EC9
PID:
20.500.12556/rul/74b460ac-8072-4c01-911c-9cfce638073c
Galerija slik
Izvleček
In this work, we revisit the stress resultant elastoplastic geometrically exact shell finite element formulation that is based on the Ilyushin–Shapiro two-surface yield function with isotropic and kinematic hardening. The main focus is on implicit projection algorithms for computation of updated values of internal variables for stress resultant shell elastoplasticity. Four different algorithms are derived and compared. Three of them yield practically identical final results, yet they differ considerably in computational efficiency and implementation complexity, since they solve different sets of equations and they use different procedures that choose active yield surfaces. One algorithm does not provide acceptable accuracy. It turns out that the most simple and straightforward algorithm performs surprisingly well and efficiently. Several numerical examples are presented to illustrate the Ilyushin–Shapiro stress resultant shell formulation and the numerical performance of the presented integration algorithms.
Jezik:
Angleški jezik
Ključne besede:
večploskovna plastičnost
,
lupine
,
integracijski algoritmi
,
multi-surface plasticity
,
shells
,
integration algorithms
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FGG - Fakulteta za gradbeništvo in geodezijo
Založnik:
Elsevier
Leto izida:
2012
Št. strani:
Str. 146-165
Številčenje:
Letn. 247/248, Letn. 247/248
PID:
20.500.12556/RUL-32203
UDK:
624.074.43
ISSN pri članku:
0045-7825
DOI:
10.1016/j.cma.2012.07.012
COBISS.SI-ID:
5921121
Datum objave v RUL:
10.07.2015
Število ogledov:
4434
Število prenosov:
1010
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Objavi na:
Gradivo je del revije
Naslov:
Computer methods in applied mechanics and engineering
Skrajšan naslov:
Comput. methods appl. mech. eng.
Založnik:
Elsevier
ISSN:
0045-7825
COBISS.SI-ID:
6695685
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