20.500.12556/RUL-32144 On Prediction of 3d Stress State in Elastic Shell by Higher-order Shell Formulations In this work we study the accuracy of modem higher-order shell finite element formulations in computation of 3d stress state in elastic shells. In that sense we compare three higher-order shell models: (i) with seven dislacement-like kinematic parameters, and (ii, iii) with six displacement-like kinematic parameters plus one strain-like kinematic parameter introduced by two different versions of enhanced assumed strain (EAS) concept. The finite element approximations of all shell models are based on 4-node quadrilateral elements. Geometrically nonlinear and consistently linearized forms of considered formulations are given. Several numerical examples are presented, where computed stresses are compared with analytical solutions. It was found that through-the-thickness variation of some (non-dominant) stress tensor components, including through-the-thickness normal stress, may be computed very inaccurately. The reliable representation for those stresses can be interpreted only if the ``layer-wise'' averaging or the through-the-thickness averaging is performed. higher-order shell model 3d constitutive equations stress computation lupine 3d napetosti true false false Techno Press Angleški jezik Angleški jezik Neznano 2015-07-10 10:12:27 2015-07-10 10:12:27 2022-11-21 15:25:14 0000-00-00 00:00:00 2008 0 0 Str. 85-108 Št. 1 Letn. 33 2008 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 624.074.4 1526-1492 4418145 1931361 On_prediction_CMES2008_Brank_k.pdf On_prediction_CMES2008_Brank_k.pdf 1 54DDD9D458BB4943167334C4947378EF 3c4b9875e3f669a5132d7ee0dbb95ffb188d42161e966f94edd8c094b7e4fb79 1122ffe9-a1ae-11eb-a523-00155dcfd717 20.500.12556/rul/c36e4580-22a6-47be-97af-2496df70017e https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=85652 Fakulteta za gradbeništvo in geodezijo 0 0 0