Special Boundary Conditions

[frd03]

Hello All,

I need make a simulation which I have a pipe under thermal loading and your boundary ( end of pipe )is connected to a device (flange) which has a radial displacement to temperature expansion, too
Initially my pipe need a boundary constrain with 06 dof equal to zero but the radial displacement due to expansion temperature should not be considered (the BC pipe would follow the device-flange ).
How could I do this ?

Thanks