Learning Forum

[ronakmrunwal]

Hello Sir,

I have a new doubt related to my simulation problem.

I had these two CFD simulated fluid strands, as can be seen in the figure. I created the solid geometry, covering the volume of the fluid using SpaceClaim.

**Now I want to perform static structural analysis on solidlayers. During 3D printing of any part, there is always porosity that exists between the fluids layers and lines.

In my case I want to perform the simulation of tensile test on these upper and bottom layers. But from the image it can be seen that both the layers have bonded contact. I need to have porosity type of contact between the two layer. can that be achieved in static structural? I have to maintain a contact like glue between the fluid interface, so that as the simulation starts I want to see two layers detaching like glue. I am confused about how to provide a porosity type of contact between the upper and lower layer. I am new to Ansys, please help.

Any help, in this case, would be appreciated.

In case of more information please let me know. I will be happy to share them

Thank you,

Best Regards,

Ronak

[Kai]

Hi Ronak, you can use cohesive zone modeling (CZM) to define a debonding criteria for the bonded contact. Search for CZM + Ansys, you should be able to find some tutorials online.n

[ronakmrunwal]

nThank you so much for your answer, I went through the videos that you mentioned. nCorrect me please if I am wrong, CZM is helpful to specify the debonding criteria for sure. But does not allow one to specify the porosity in between the layers right?nfor example, nI am looking to provide, porosity between the layers quite similar to this, and then perform a tensile test on the layers.nThanks again for your response.nnRegards,nRonakn

[ronakmrunwal]

Hello everyone,nIs it possible to match the experimental results of the whole specimen, (In my case it is a 3D printed dog- bone specimen, for reference I am attaching the picture of it) with the 2 layers of the print(in short a small section of the part).nI got the experimental stress for the tensile test of the printed polymer as 5MPA but my simulated results are about 150 MPA. which is too much. please do guide me on thisnBest Regards,nRonakn