I want to create a simple geometry, for example, a brick, with a crack, a single fracture in it.
I created the brick, and now I want to create the fracture. Can Trelis do that?
I do not want the crack to go all the way till the end of the brick. For example, if the length of the brick is 10 ft, I want the crack to end at 7 ft. I tried to use different geometry entities, and then use boolean subtract, but it is not working the way I want.
What geometry entity would you recommend to use to create a crack?
Also, if the brick is set to be a porous medium, is it possible to mesh and set permeability and porosity values?
Here is a journal file that shows an example of what I think you are looking for. Either copy and paste these commands into the journal editor or just paste them into the command tab at the Trelis> prompt.
We do not currently support setting permeability or porosity.
#----- Begin Trelis Journal File ----
create a 10 x 10 x 10 cube (brick)
brick x 10
There are various tools for cutting up the geometry. Here I use two different
ones just for an example, General Plane and Coordinate Plane.
webcut body 1 with general plane location 0 -2 0 direction 0 1 0
webcut body 1 with plane xplane offset 0 rotate 20 about center 0 0 0
Imprint maps boundary curves between the various volumes or bodies
imprint all
#Select one of the surfaces on the fracture. Make sure your filters are set to
pick surfaces. Pick a point that projects into the fracture normal to the screen axis.
Use the tab key to cycle through surfaces along that vector.
I didn’t find this option easily in the GUI, so from the command prompt, type
surface 17 merge off
merge all other surfaces in the model, so that you have a conformal mesh
merge surface all
mesh the volumes
mesh volume all
verify that there are coincident nodes in the correct locations but not everywhere else!
I think you may misunderstand his meaning, he just like to generate a finite surface, rather than the infinite plane by webcut.
Is there anyone who can help with this?
Thank you!
