Posted by: Van Ha
Convergence problem - 03/26/10 08:57 AM
Hi all,
I have a problem about nonlinear system as follow:
+ My model has some +Y restraints. When I use default friction stiffness to solve the system, it's not convergence. The traditional way is to reduce the friction stiffness value to get convergence. However, I can not get the convergence even I set the lowest friction stiffness value.
+ So I changed to Y restraint (linear) to solve the problem. And vertical forces (FY) are negative values. This analysis will be issued for construction. I'm wondering that can I allow +Y restraint in real world (means Y restraint in my calculation)?
I need some guidelines. If someone could help, I appreciate that.
Best regards.
I have a problem about nonlinear system as follow:
+ My model has some +Y restraints. When I use default friction stiffness to solve the system, it's not convergence. The traditional way is to reduce the friction stiffness value to get convergence. However, I can not get the convergence even I set the lowest friction stiffness value.
+ So I changed to Y restraint (linear) to solve the problem. And vertical forces (FY) are negative values. This analysis will be issued for construction. I'm wondering that can I allow +Y restraint in real world (means Y restraint in my calculation)?
I need some guidelines. If someone could help, I appreciate that.
Best regards.