How can I apply boundary condition

[R.Eng]

How can I apply boundary condition to center of this plate?
I fixed the center RP and make the center of plate as rigid body. but as you see the Mises stress around the center is very high!

 

[FEA way]

What kind of sheet metal forming process do you want to simulate ? Is the workpiece somehow fixed during this process ? Boundary conditions should generally correspond to the actual operating conditions.

 

[R.Eng]

The process is spinning forming.I fixed the preformed plate (import analysis) and give rotation to rollers (both around plate axis and self axis).

 

[FEA way]

In that case, isn't there a hole in the middle of this sheet? It would be much easier to set boundary conditions if the model included such a hole.

 

[R.Eng]

Could I have your email or any communication addresses?
This project is for my MSc. thesis and I thank you in advance

 

[R.Eng]

In this work there is not any holes.
Is it possible to solve this by the hole in the middle of plate? where I should apply the BC? Just on the edge of the hole?

 

[FEA way]

If there’s no hole in the modeled sheet metal part then it would be better to avoid introducing it to the computational model. In the real-life process the part should be somehow supported and the goal here is to simulate this support.

 

[IceBreakerSours]

I must remind the OP that one of the rules of eng-tips forums is that you must be doing your own school work. That is not to say students are excluded from seeking guidance and understanding. However, a) students are at a school for a reason i.e., paying others to learn new skills and b) there is a line between seeking guidance and getting your school work done with the help of generous professionals online (without having to pay them, by the way).

*********************************************************
Are you new to this forum? If so, please read these FAQs:

http://www.eng-tips.com/faqs.cfm?fid=376

http://www.eng-tips.com/faqs.cfm?fid=1083