<![CDATA[Cervenka Consulting Forums — locking and hourglassing]]> https://forums.cervenka.cz/viewtopic.php?id=2036 Tue, 25 Sep 2018 13:41:53 +0000 PunBB <![CDATA[Re: locking and hourglassing]]> https://forums.cervenka.cz/viewtopic.php?pid=4018#p4018 Dear minafogiovanni, please see the ATENA Theory manual for detailed information: 

For the geometry, above all Chapter I.

For the 3D volume elements, 3.5 3D Solid Elements. As far as I understand, hourglassing does not come into question as the linear brick elements have 8 Nodes and also 8 Integration Points.
Under typical conditions, locking is excluded by providing enough elements per thickness in bending direction (see also ATENA 3D User's, 3.7.4.1.4 Final Notes on Meshing or ATENA-GiD User's, 5.7.1 Notes on Meshing).

If you have some specific suspition, please follow Troubleshooting, 2.1.1 to send us your model etc.

Regards.

]]> Tue, 25 Sep 2018 13:41:53 +0000 https://forums.cervenka.cz/viewtopic.php?pid=4018#p4018 <![CDATA[locking and hourglassing]]> https://forums.cervenka.cz/viewtopic.php?pid=4017#p4017 how can be locking and hourglassing checked in a 3D model with IsoBrick elements?
Additionally, what is the formulation adopted by atena3d for geometrically non linear models? Incompatible mode elements?

Thanks

Giovanni

]]> Mon, 24 Sep 2018 14:29:35 +0000 https://forums.cervenka.cz/viewtopic.php?pid=4017#p4017