Abaqus co-simulation: mesh doesn't deform

pi120 · June 8, 2021, 05:38

Hello, I am trying to set up a simple case of fluid-structure interaction for a plate with star-ccm and Abaqus.
Following the tutorial and the guide, I managed to run a first simulation. The air pressure on the plate is interpolated on Abaqus mesh at each time-step, then Abaqus computes stresses and displacements. However, for some reason, the displacements computed by Abaqus are not transferred back to star-ccm. I can see that as the mesh in star-ccm is not deformed (i.e. the plate does not bend in star-ccm, even if the displacement computed by Abaqus is high).
I'm starting to think that the morphing motion I assigned to the fluid region is not working as it is supposed to.
Has anybody encountered the same issue?

pi120 · June 11, 2021, 11:42

In case anybody faced the same issue: I changed under co-simulation/link1/imported variables the displacement option from unmanaged to managed. That made it work

cwl · June 12, 2021, 17:35

Thank you for sharing your solution - surely one day someone will find it helpful

June 8, 2021, 05:38	Abaqus co-simulation: mesh doesn't deform	#1
pi120 Member Pietro Join Date: Jun 2021 Location: London Posts: 40 Rep Power: 4	Hello, I am trying to set up a simple case of fluid-structure interaction for a plate with star-ccm and Abaqus. Following the tutorial and the guide, I managed to run a first simulation. The air pressure on the plate is interpolated on Abaqus mesh at each time-step, then Abaqus computes stresses and displacements. However, for some reason, the displacements computed by Abaqus are not transferred back to star-ccm. I can see that as the mesh in star-ccm is not deformed (i.e. the plate does not bend in star-ccm, even if the displacement computed by Abaqus is high). I'm starting to think that the morphing motion I assigned to the fluid region is not working as it is supposed to. Has anybody encountered the same issue?

June 11, 2021, 11:42		#2
pi120 Member Pietro Join Date: Jun 2021 Location: London Posts: 40 Rep Power: 4	In case anybody faced the same issue: I changed under co-simulation/link1/imported variables the displacement option from unmanaged to managed. That made it work cwl likes this.

June 12, 2021, 17:35		#3
cwl Senior Member Chaotic Water Join Date: Jul 2012 Location: Elgrin Fau Posts: 435 Rep Power: 17	Thank you for sharing your solution - surely one day someone will find it helpful pi120 likes this.

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