Body Coupling in overset region
 

Hi everyone,
I've came up with a problem when I use the body coupling spring in a two dfbi model, where one dfbi in the background region and the other in the overset region. When I use a linear spring to connect the two body, there comes the error in the calculating process. The error comes immediately when the 6dof body in the overset region releases and the error information are as follows:
Updating indirect region interface Overset Mesh 1 between Overset and Background.
Found Acceptors in Region "Overset" with zero donors . This might be due to too fine or too coarse mesh.
Command: RunSimulation
CompletedCommand: RunSimulation
error: Server Error
But when I fixed the motion of the body in the overset region, it can calculate again. I don't know how to handle with this, is there anyone who can help me solve this problem? I am looking forward to your reply.

sjtuwjh

Another question, can one region has two dfbi? Because when use the overset mesh there comes so many problems.