Modeling of Spring with Friction in CAESAR II
Modeling of Spring with Friction in CAESAR II
(OP)
Dear Pipers
Could you please help me to model the Spring Can with friction between load flange and bottom of shoe.
I have checked this with CAESAR Application Guide Chapter 4-19, but some people say it's not the bast way to follow.
There is an opinion that the only one +Y restrain with friction has to be modeled for Cnode which is connected to the spring. All other restrains have to be omitted.
The Application Guide recommends to rigidly connect all DOF's except for the vertical spring stiffness.
I tried these two options and got different results
Your imput and suggestions will be greatly appreciated
Thanks and have a nice day.
Could you please help me to model the Spring Can with friction between load flange and bottom of shoe.
I have checked this with CAESAR Application Guide Chapter 4-19, but some people say it's not the bast way to follow.
There is an opinion that the only one +Y restrain with friction has to be modeled for Cnode which is connected to the spring. All other restrains have to be omitted.
The Application Guide recommends to rigidly connect all DOF's except for the vertical spring stiffness.
I tried these two options and got different results
Your imput and suggestions will be greatly appreciated
Thanks and have a nice day.





RE: Modeling of Spring with Friction in CAESAR II
Restrain the other DOFs like the manual says.
Richard Ay
COADE, Inc.
RE: Modeling of Spring with Friction in CAESAR II
I use X and Z restrains between the node 10 and CNode 15 and +Y with friction for CNode 15.
My spring is also at Node 10 with CNode 15. I do not have the element 15 to 20 which is fine with SAESAR Application Guide 4-19
The opinion which I mentioned is not to use X and Z restrains between node 10 and and Cnode 15 and put only +Y with friction for Cnode 15 and connect the spring at Node 10 to CNode 15.
In other words the spring at Node 10 is connected to Cnode 15 where only +Y restrain with friction is modeled.
In both cases CAESAR runs analyses without fatal error, but gives different results
Please advise
Thank you in advance
RE: Modeling of Spring with Friction in CAESAR II
Richard Ay
COADE, Inc.