20.500.12556/RUL-32203 Stress resultant plasticity for shells revisited 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. večploskovna plastičnost lupine integracijski algoritmi multi-surface plasticity shells integration algorithms true false false Elsevier Angleški jezik Angleški jezik Neznano 2015-07-10 10:13:05 2015-07-10 10:13:05 2022-11-21 15:54:24 0000-00-00 00:00:00 2012 0 0 Str. 146-165 Letn. 247/248 Letn. 247/248 nov. 2012 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 624.074.43 0045-7825 10.1016/j.cma.2012.07.012 5921121 6695685 Stress_Brank_k.pdf Stress_Brank_k.pdf 1 5548E062A3BA1D265F97BDF08AF00EC9 3518409bfafe81331daedc978b119ba8d8e31ccf43b9133d3ad1dd7f358a6ea8 155708ea-a1ae-11eb-a523-00155dcfd717 20.500.12556/rul/74b460ac-8072-4c01-911c-9cfce638073c https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=85716 Fakulteta za gradbeništvo in geodezijo 0 0 0