Interface Cohesive error segmentaion fault core dumped

[ap264]

Hi
I have been trying to use cohesive interface meshing for my tessellation and i get an error in the linux module saying "segmentation error core dumped" (image attached)

the following commands were used to define the model and meshing

neper -T -n 79 -morpho "diameq:custom(minaxis),1-sphericity:lognormal(0.145,0.03)" -reg 1
neper -M mytess.tess -dim 2 -rcl 0.6 -meshface "domtype!=2" -interface cohesive -nset none -faset none -format inp,msh

[rquey]

Please provide Neper's output (as any other text input or output) as text, not image.

For a 3D tessellation, the cohesive mesh is the mesh of the 2D grain boundaries (zero-thickness elements), and so you need a 3D mesh:

neper -T -n 79 -morpho "diameq:custom(minaxis),1-sphericity:lognormal(0.145,0.03)" -reg 1
neper -M mytess.tess -dim 3 -rcl 0.6 -interface cohesive -nset none -faset none -format inp,msh

========================    N   e   p   e   r    =======================
Info   : A software package for polycrystal generation and meshing.
Info   : Version 4.4.1
Info   : Built with: gsl|muparser|opengjk|openmp|nlopt|libscotch (full)
Info   : Running on 8 threads.
Info   : <https://neper.info>
Info   : Copyright (C) 2003-2022, and GNU GPL'd, by Romain Quey.
Info   : Loading initialization file `/home/rquey/.neperrc'...
Info   : ---------------------------------------------------------------
Info   : MODULE  -M loaded with arguments:
Info   : [ini file] none
Info   : [com line] mytess.tess -dim 3 -rcl 0.6 -interface cohesive -nset
         none -faset none -format inp,msh
Info   : ---------------------------------------------------------------
Info   : Reading input data...
Info   :   - Reading arguments...
Info   : Loading input data...
Info   :   - Loading tessellation...
Info   :     [i] Parsing file `mytess.tess'...
Info   :     [i] Parsed file `mytess.tess'.
Info   : Meshing...
Info   :   - Preparing... (cl = 0.06992) 100%
Info   :   - 0D meshing... 100%
Info   :   - 1D meshing... 100%
Info   :   - 2D meshing... 100% (0.086|0.76/94%| 5%| 1%)
Info   :   - Fixing 2D-mesh pinches...
Info   :   - 3D meshing... 100% (0.68|0.85/86%|14%| 0%) 
Info   :   - Processing mesh at interfaces...
Info   :     > Making mesh discontinuous...
Info   :     > Adding cohesive elements...
Info   : Writing mesh results...
Info   :   - Preparing mesh...
Info   :   - Mesh properties:
Info   :     > Node number:    13699
Info   :     > Elt  number:    37739
Info   :     > Mesh volume:    1.000
Info   :   - Writing mesh...
Info   :     [o] Writing file `mytess.inp'...
Info   :     [o] Wrote file `mytess.inp'.
Info   :     [o] Writing file `mytess.msh'...
Info   :     [o] Wrote file `mytess.msh'.
Info   :     [o] Writing file `mytess.intf'...
Info   :     [o] Wrote file `mytess.intf'.
Info   : Elapsed time: 34.128 secs.
========================================================================

[ap264]

From your reply: Please provide Neper's output (as any other text input or output) as text, not image.
I apologize for the inconvenience.

From your reply: For a 3D tessellation, the cohesive mesh is the mesh of the 2D grain boundaries (zero-thickness elements),

In this case, if I use the cohesive option for a 3D tessellation mesh then will I be meshing it with 2D elements, since the thickness of each element is zero?

[rquey]

The zero-thickness cohesive elements are triangular prisms (of zero height).