Posted by: Dharam
Reciprocating Compressor lines- Model Dynamically unstable - 12/21/03 11:38 AM
Dear Friends
On a large piping system while trying to calculate natural frequency of the system after making successfull static run I am getting following prompt from CAESARII.
" Model is dynamically unstable. {Rigid body modes} Need some extra restraint to prevent infinite sliding or rotation."
I do not think I have any free ends at all.
How can I find where I need more restraint and why??
On a large piping system while trying to calculate natural frequency of the system after making successfull static run I am getting following prompt from CAESARII.
" Model is dynamically unstable. {Rigid body modes} Need some extra restraint to prevent infinite sliding or rotation."
I do not think I have any free ends at all.
How can I find where I need more restraint and why??