Learning Forum

[s281303]

I have to analyse local loads on a carbon fibre panel. I executed the run but I cannot plot the stress of each layer. The software plots just the mean stresses (Von Mises, Tresca...) but not the one of each layer I need. 

I used MAT054 to define the mat properties and then Part-Composite for the layer layout [0/90/+-45]_2

[Reno Genest]

Hello,

Have you set MAXINT in *DATABASE_EXTENT_BINARY to the number of layers in your layup to output results for each through the thickness integration point?

You can also set CMPFLG=1 in *DATABASE_EXTENT_BINARY to write stress and strain results in the material coordinate system.

Have a look at the following 2 presentations on composites in LS-DYNA:

https://ftp.lstc.com/anonymous/outgoing/support/FAQ_kw/composites/mat_comp.pdf

https://ftp.lstc.com/anonymous/outgoing/support/PRESENTATIONS/lsprepostcomposite.pdf

 

 

Let me know how it goes.

 

Reno.

 

[s281303]

Thank you very much Reno, now I'm able to plot the local stresses 👍

[Reno Genest]

Great! Thanks for letting us know.

For the benefits of others: once you have set MAXINT in *DATABASE_EXTENT_BINARY, you can post-process the results in each layer by looking at the IPt results in LS-PrePost and selecting the appropriate integration point number:

 

 

 

Reno.