Eroding projectile impacting eroding plate in CAE

[RBureau]

Hi all,

I guess the question is in the title: is there a way to model the "Eroding projectile impacting eroding plate" problem in the CAE? Especially, can the elemental eroding surfaces be created in the CAE?

Thanks

 

[FEA way]

You can try doing this in CAE. Create interior surface first (just pick all interior element surfaces in viewport using "Select From Interior Entities" tool) and add it to contact inclusions of general contact.

 

[Mustaine3]

I think the automatic recognition of interior regions is not supported by A/CAE.

Workaround:
Create the element set for the whole region in A/CAE. In the Keyword Editor or input file add:
*SURFACE, NAME=my_surf, TYPE=ELEMENT
my_elset, INTERIOR

This will automatically generate a surface will all element faces of that element set.
Add this new surface into the general contact definition.

 

[FEA way]

Indeed, automatic recognition of interior surfaces is not available in CAE. But it’s possible to define a surface consisting of all internal element faces, as described in my previous post. This approach is described in the documentation chapter "Element-based surface definition".

 

[RBureau]

Alright, thank you both for your answers.

@Mustaine3: I was precisely wondering if I could do without editing keywords. I already set up my simulations using input files, but I wanted to share a CAE-only version. However you confirmed to me that there was no automatic recognition of interior regions in CAE, which explains why I struggled with that. Thanks!

@FEA way: I tried that already, but it seems ABAQUS only selects the facets of elements lying on internal geometrical surfaces, such as those defined partitioning my parts. Yet again, the chapter "Element-based surface definition" you suggested has written in it "Abaqus/CAE Usage: The automatic free surface generation method is not supported in Abaqus/CAE". So I guess that settles it, thanks.

Good day to you.

 

[FEA way]

You have to mesh the model first and then create mesh type surface in CAE. It should work this way.

 

[RBureau]

I thought I tried that too already (even before my first post). I'll try again, for good measure, but I am already satisfied with the "no automatic free surface generation" answer. Thanks anyway!