Export bug when defining hex20 before refinement

Coreform Cubit Importing/Exporting
#1

I stumbled over a small bug while exporting hex20 elements.

When i define the hex20 element for the block before the refinement. i get an error on export.
“Unable to build sequential node IDs (Invalid connectivity) WARNING: Nothing to write.”

hex8 elements doesn’t produce this error. defining the hex20 after refinement also works.

create brick x 10
webcut volume all with plane xplane offset 1
webcut volume all with plane xplane offset -1
webcut volume all with plane yplane offset 1
webcut volume all with plane yplane offset -1
webcut volume all with plane zplane offset 1
webcut volume all with plane zplane offset -1

imprint vol all
merge vol all
mesh vol all

set duplicate block elements off
block 1 add volume all
block 1 element type hex20

refine surface 157 247 248 238 189 219 numsplit 1 bias 1.0 depth 1 smooth

export abaqus "test.inp" overwrite
#2

Hi Norbert,

I can replicate this problem, I will add it into our bug backlog for tracking. For now, it looks like your work-around is to set the higher-order node types after refining.

Thanks,
Karl