Problem with density in a CEL abaqus

[Arturogdc90]

Hi all,

I have been working on a tank simulation, when simulating this case I got this behaviour with the tank still

https://www.dropbox.com/s/z4crh72au8rj14n/Ingtips1_50pc.PNG

https://www.dropbox.com/s/4352ytpejc7nf8c/Ingtips2_50pc.PNG

After posting in the FEM forum a colleague from this forum told me to add the rough condition in contact(it was supposed to be failing because of this) and modify some parameters (Steel young modulus and density) to achieve a faster computing time. After that everything worked just fine, but I needed the original density as I am trying to measure the forces created by the water when the tank is moved sideways. When I changed back the steel density the problem arised again and the strange "bubbles" started again.

Here you can see some frames of the tank working with steel density x100 and nothing else changed:

https://www.dropbox.com/s/0199pa541fuye0v/steel_d100_1.PNG

https://www.dropbox.com/s/wn27po6u6v0ofzh/steel_d100_2.PNG

The simulation is perfect, but the forces values are not valid (as the density is highly increased).

Anyone knows why is this happening? Also, Can I solve this in any way?

Thanks in advance for any help or tip that you can offer.

 

[burningDiesel]

I looked at your .cae again and you are right. And I have no idea why it is happening.
If you have access to support, this would be a good question.

 

[Arturogdc90]

Sadly I do not have any accesss to support (this is for my master thesis), my university only has the abaqus standard license. So I will have to figure something out.