Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Restrict displacement for Solid in FSI simulation
Posted 20 févr. 2019, 04:43 UTC−5 0 Replies
Please login with a confirmed email address before reporting spam
Hi!
Anyone kindly let me know the procedure to restrict displacement for solid in FSI simulation. My model is 3D symmetric and the problem is simialr to check valve where the valve deflects when the fluid pressure increases. But, I have to restrict the opening of solid valve displacement to 0.3mm in y direction for that I have used integration coupling operator (definitions--> complement coupling--> integration) over a point which is experience maximum displacement.
Under solid mechanics, from global section I have added global constraint if((intop1(v_solid)<0.3[mm]), intop1(v_solid), 0.3[mm])
Here if the condition is true, it should use actual displacement caused by the fluid pressure, else 0.3[mm] of displacement should be allowed.
But my model is showing some conflicts. Stresses on where constraints points weredefined got very high as shown in the image. Aim was to restrict the solid displacement in y direction unfortunately stress got much higher and also the deformation patterns does not seems logical. Please help to understand am I going in the right way or are they any other way to restrict displacements for solid in FSI simulation?
Thank You. Suraj Sukumaran
Attachments:
Hello Suraj Sukumaran
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.