Modelling contact problem with large strain

[Amine A]

Hello,
I want to model an hyperelastic cylindrical tube (with mooney rivlin law). we apply to this tube a displacement as shown the figure below.
I want to know can I just model the superior part ( I mean can I consider it symmetrical problem ?) . If so, should I change the value of displacement U?

 

[GregLocock]

If you treat it as symmetric U will halve. You'll need to put the right boundary conditions in. Frankly for a 2d problem why waste time risking bad bcs?

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

[Amine A]

ah ! so it would be better if I won't simplify . So I model all the tube ?

 

[GregLocock]

Yes, it is quicker for you, more robust, and eliminates one cause of errors.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

[Amine A]

ok thank you brother