How to simulate failure theory of laminate

Hi,

i built my model in hypermesch with shell elements, this elements have a PCOMP property with three layers. So how can I simulate wheter the Shell elements are safe or fail? I found a Website http://altairatc.com/europe/EHTC2011-Abstracts/EHTC-Presentations-2011/Session_12/AgustaWestland_presentation.pdf and there they talk about a Skript called HM_PE.tcl. So where can i find this Skript or is there any other Analysis i can make?

Kind regards

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Altair Forum User

Hi,

The script specified is a a subroutine written by the company.

Usually you can include failure theory within PCOMPP/PCOMP and look at the failure indices or Strength ratios to know about integrity of the ply.

Altair Forum User

ok thanks and where can i find the failure indices?

Altair Forum User

@hubéry10

Please add CFAILURE to output failure indices.

Go to Control Cards>> Global Output Request>> CFAILURE. Also make sure you have selected SOUT>>YES in PCOMP/PCOMPG to write out failure indices, composite stress, strain for individual plies.

Please note: When CFAILURE is not present, composite strength ratios are not output. CSTRESS and CSTRAIN entries cannot be used to request failure indices.

Altair Forum User

I selected SOUT in PCOMP and have Input ST, SC, SS(MAT1) ; Xt, Xc, Yt, Yc, S(Mat8) but CFailure is not presented. So whats my mistake?

<?xml version="1.0" encoding="UTF-8"?>

Altair Forum User

Hi,

What is the version of HyperWorks are you using?

as a workaround, please edit the model file in any text editor and add the CFAILURE card as shown below:

<?xml version="1.0" encoding="UTF-8"?>