Abaqus Fluid Inflation Problem
Abaqus Fluid Inflation Problem
(OP)
Hi All,
I have successfully modeled a 3D enclosed fluid cavity, and using the FLUID INFLATION method, I have been able to inflate the cavity.
The only problem I am having is controlling the pressure gradient of the fluid elements within the cavity.
I want to add an increased pressure gradient but I am not sure on how to accomplish this.
I am unable to use the FLUID FLUX method as my cavity does not have hydro-static elements but instead has the same elements as the airbag model within the abaqus tutorial files.
Any help and advice would be much appreciated.
Thanks.
I have successfully modeled a 3D enclosed fluid cavity, and using the FLUID INFLATION method, I have been able to inflate the cavity.
The only problem I am having is controlling the pressure gradient of the fluid elements within the cavity.
I want to add an increased pressure gradient but I am not sure on how to accomplish this.
I am unable to use the FLUID FLUX method as my cavity does not have hydro-static elements but instead has the same elements as the airbag model within the abaqus tutorial files.
Any help and advice would be much appreciated.
Thanks.





RE: Abaqus Fluid Inflation Problem
http://www.eng-tips.com/faqs.cfm?fid=376
http://www.eng-tips.com/faqs.cfm?fid=1083
RE: Abaqus Fluid Inflation Problem
You can control pressure value inside fluid cavity in direct way through reference node of the cavity and 8 DOF (it is pressure).
If you want to increase pressure from 0.0 to 1.0 and then keep it constant just use *BOUNDARY and *AMPLITUDE keyword.
CODE
** ** MODEL DATA ** ** fluid cavity definition ** *NODE, NSET=cavity-REF-NODE 100, 0.0, 0.0, 0.0 ** *FLUID CAVITY, NAME=cavity, REF NODE=cavity-REF-NODE, ... ** ** HISTORY DATA ** *AMPLITUDE, NAME=pressure-AMP ** time, pressure 0.0, 0.0 10.0, 1.0 100.0, 1.0 *BOUNDARY, NAME=pressure-AMP cavity-REF-NODE, 8, 8, 1.0 **Regards,
Bartosz