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Hi All,
Is there any failure models available in Optistruct for implicit nonlinear analysis?
I need to remove the elements once uts is reached / strain value reached ?
Thank you
N.K
Hi @Karthic
Are you looking for a particular type of material?
Hi @Prakash Pagadala,
I am looking for plastic material, for now I am using the MAT1 with MATS1 (table data).
I am facing the non convergence error due to heavy element distortion. So I would like to remove the elements failed in the model.
Thankyou
Have you gone through MATF card?
In MATF you can use DUCTILE failure with a limit on stress.
Thank you @Prakash Pagadala,
What should I select for criteria field in the MATF card?
<?xml version="1.0" encoding="UTF-8"?>
@Karthic
If you are using an isotropic material, you can use either STRN or DUCTILE
If I am using STRN, should I specify the Material stress limits Vi and Parameters for failure envelope.
where to mention the Strain limit ? /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />
I checked with experts and there is no element deletion will happen for now with MATF
Thank you for the efforts.
So for now element deletion due to material failure is not possible with Optistruct ?
Yes, you may have to use RADIOSS,
Thank you Prakash. Let me try in Radioss
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