how to impose a constant static pressure and a variable force simultaneously

Alberto Buccellato

i want to simulate a cylinder that is sebjected to a constant static pressure and a compression dynamic load, i manage to impose the dynamic load with a transient dynamic analysis, but i don't know how to impose the static pressure simultaneously. how can i do that?

Xiaolei

Hi Alberto, 

Please check DLOAD. 

It defines a dynamic loading condition for frequency response problems as a linear combination of load sets defined via RLOAD1 and RLOAD2 entries, or for transient problems as a linear combination of load sets defined via TLOAD1 and TLOAD2 entries, or acoustic source ACSRCE entries.

So, the static pressure can be defined using a TLOAD1 which references a TABLED1 with a constant Y value. 

Thanks. 

Xiaolei