Abaqus co-simulation: mesh doesn't deform

pi120 · June 8, 2021, 06:38

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, 12:42

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, 18:35

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

June 8, 2021, 06:38	Abaqus co-simulation: mesh doesn't deform	#1
pi120 Member Pietro Join Date: Jun 2021 Location: London Posts: 40 Rep Power: 5	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, 12:42		#2
pi120 Member Pietro Join Date: Jun 2021 Location: London Posts: 40 Rep Power: 5	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, 18:35		#3
cwl Senior Member Chaotic Water Join Date: Jul 2012 Location: Elgrin Fau Posts: 438 Rep Power: 18	Thank you for sharing your solution - surely one day someone will find it helpful pi120 likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[snappyHexMesh] non uniform mesh near the stl object	vava10	OpenFOAM Meshing & Mesh Conversion	0	January 31, 2021 15:41
Airfoil simulation solution interfered by mesh	Dvergr	OpenFOAM Running, Solving & CFD	1	September 28, 2014 03:05
Mesh motion with Translation & Rotation	Doginal	CFX	2	January 12, 2014 07:21
fluent add additional zones for the mesh file	SSL	FLUENT	2	January 26, 2008 12:55
Convergence moving mesh	lr103476	OpenFOAM Running, Solving & CFD	30	November 19, 2007 15:09