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090			_aB-17932
245	1	0	_aOn Performance of Nine-Node Quadrilateral Shell Elements 9-EAS11 and MITC9i.
490	0		_vIn Recent Developments in the Theory of Shells. Springer, Cham., p.711-725, 2019
520	3		_aThe chapter concerns nine-node quadrilateral shell elements derived for the Reissner-Mindlin kinematics and Green strain. They are based on the potential energy functional extended to include drilling rotations. A standard element of this class suffers from locking and over-stiffening; several special techniques are needed to improve its performance. We developed three nine-node shell elements with the membrane strains enhanced by the EAS11 representation of Bischoff and Ramm (Int. J. Num. Meth. Eng. 40:4427-4449, 1997 [2]). The transverse shear strains are treated either by the ANS method of Jang and Pinsky (Int. J. Num. Meth. Eng. 24:2389-2411, 1987 [6]), or are enhanced by the EAS6 representation of Sansour and Kollmann (Comput. Mech. 24:435-447, 2000 [17]), or remain unmodified. We also modify the EAS transformation rule, extending the idea put forward in Park and Lee (Comput. Mech. 15:473-484, 1995 [15]) for curved shells. Several numerical examples provide comparison of three 9-EAS11 elements to our MITC9i shell element of Wisniewski and Turska (Comput. Mech. 62, 499-523, 2018 [20]).
650	1	4	_aQUADRILATERAL SHELL
700	1	2	_aWisniewski, K.
700	1	2	_aTurska, E.
856	4	0	_uhttps://drive.google.com/file/d/12xbRuN3Z3NLO6lNaFmktKp1NT6PbVW_U/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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