volume of fluid cavity in abaqus

[liq001]

Hello everyone,

How do I know the volume/mass of fluid has been added in the cavity when using fluid cavity in abaqus?

Best
Lee

 

[FEA way]

Check the CVOL (hydrostatic fluid cavity volume) output variable.

 

[liq001]

Thanks so much. how about the ***ERROR: Excessive rotation of node number ? What is going to check? I am using abaqus/explicit with general contact

Best
lee

 

[FEA way]

Check where this node is located and what role it has.

 

[liq001]

Hello all,

How do I know how much mass I have been added in the fluid cavity? I am trying to model a pod with certain mass of fluid in that cavity? how to define the mass of the fluid? Thanks

Best
lee

 

[FEA way]

Check this thread:

https://www.eng-tips.com/viewthread.cfm?qid=488933

 

[liq001]

Thank @ FEAway. May I ask why the PCAV value drop to zero at the beginning of increment? I have set the initial pressure use predefined field. I found the reference node move out of my cavity. However I do run the ABAQUS example, the reference node also move out of the cavity, but pressure not drop to zero. Please help.

Best
Lee

 

[FEA way]

Check if there are any warning messages. Maybe try pressurizing the cavity with fluid cavity pressure boundary condition in the first step (deactivate it in the second step).

 

[liq001]

Thanks. I only have one step. Basically I am doing drop test of a pad with some kind of fluid in it. I defined the initial cavity pressure use predefined field. I believe this is the correct way to define it right? And apply pressure in BS is totally different thing right?

Best
Lee