<![CDATA[Cervenka Consulting Forums — Mesh refinement]]> 2014-02-04T06:55:40Z PunBB https://forums.cervenka.cz/viewtopic.php?id=1693 <![CDATA[Re: Mesh refinement]]> Hello, the material law is evaluated in each integration point - see also ATENA Troubleshooting, 2.1.23 The tensile (or compressive) stresses exceed the tensile (or compressive) strength or yield stress – what is wrong?

You can not say in general if the convergence with mesh refinement is from above or below - this can differ problem from problem, model from model.

You are right large elements are more brittle once a crack starts opening. For element sizes larger than the distance between localized cracks (typically, shells), please define crack spacing to prevent unrealistic brittleness.

]]> https://forums.cervenka.cz/profile.php?id=4 2014-02-04T06:55:40Z https://forums.cervenka.cz/viewtopic.php?pid=3073#p3073 <![CDATA[Mesh refinement]]> Hi there,

I have a RC  pile cap with a coarse mesh. I was wondering which stress is considered for cracking criteria in FE mesh? is it the stress at element surface or the average for that element?

Does finer mesh give a higher load capacity and whilst the coarse mesh is conservative?

I guess the crack will propagate in the whole element (not partially) and with the coarse mesh it will be quicker. Please confirm if that is correct.

kind regards,
Siavash

]]> https://forums.cervenka.cz/profile.php?id=24738 2014-02-04T00:00:50Z https://forums.cervenka.cz/viewtopic.php?pid=3072#p3072