Learning Forum

[javat33489]

Hi all.

See I did two identical tests.

In one, a SPH die of aluminum is drilled, in the second of concrete and sandstone.

Aluminum cuts well, but it does not cut concrete and sandstone.

Aluminum uses Johnson-Cook + EOS material.

Mohr-Coulomb sandstone and Drucker-Prager concrete.

Why are sandstone and concrete not drilled?

Al:

 

Geo:

 

Calculation time:

Materials:

 

I also wanted to add a map snippet with other stuff that takes EOS into account:

But the LS-Dyna ACT workbench gives an error:

LS-Dyna prepost on such material gives an error:

[Ram Gopisetti]

Hi javat,

you can insert the material snippets as commands to specific to the part. Parts are serilised in the WB 

you need an damage accounting to the Mohr-coulomb as the material model is updated recently, 

cheers, ram 

 

[javat33489]

I used the sandstone material from the WB base with More-Columbus. But it also doesn't wobble.

I found my mistake: the snippet-material needs to be inserted into the geometry part.

But why doesn't the stuff work in LS-Dyna prepost (not WB)?

And in the Workbench, an error will appear on "_TITLE" in the title of the material.

After failing the sandstone and concrete materials from the WB base with More-Columbus, I decided to try the Johnson-Holmquist material.

[javat33489]

Fine. it all worked. it was necessary to insert the LS-Dine snippet CONTROL_CONTACT.💯

But Johnson-Holmquist material does not work in LS Prepost.