How to setup a rotation motion of a flexible body in dynamic analysis?

[jerryd2017]

Problem describe:
I want to simulate a flexible fan with a constant rotating speed. The hub is rigid, while the fan blade should be flexible.
A time dependent pressure load is applied on the blades. The file generated by ABAQUS 6.13 is attached.

Things I have tried:
I have tried the rigid body motion constraint and the coupling constraints.
It seems that when I constrained all the faces with a reference point, the blades turns to rigid. Therefore, no displacements will be generated.
However, when I constrained only the hub with a reference point, the blade will not rotates with the hub, resulting with distorted elements error.

Does anyone have an idea have to set a rotating motion to a flexible body in dynamic analysis?

Please help me! I will be so appreciate for your help!

 

[jerryd2017]

IS ANYONE KNOW SOMETHING ABOUT THIS? Really really need your help!

 

[Mustaine3]

Just make the hub rigid and use Tie constraints to glue each fan at the hub.

PS: I've seen it is all one part. Then partition the part to get the fans as several cells. Then select just the hub cell as region for a rigid body. The Ties are not necessary, since the fans will share the same node with the hub when everything is one part.

 

[jerryd2017]

@Mustaine3

Dear Mustaine3,

Thank you for reply. I tried the rigid body constraint it seems worked. Thank you so much.