Dear David, > So my first question is: Can I do it like this or is there a simpler way of doing it? I can't really comment on this. Hopefully someone with more experience than me will chip in. > And the second question is: How can I access this sort of Information? The area might for example be computed using the norm of a cross product. But I am not sure how to get the two vectors for this operation. You might want to check this function: http://dealii.org/developer/doxygen/deal.II/classTriaAccessor.html#a07891adb63b1629ef34bf285d1b70af2
I would recommend you read carefully the description of the function before using it, mainly for curved domains. Bests, Lucas On Friday, 16 February 2018 08:43:32 UTC+1, daschn...@googlemail.com wrote: > > Dear all, > > I studied the step- 44 Tutorial Program and read already a lot about how > to apply a Neumann contribution. But I have still two questions: > In my case, I like to apply a force (not a force per unit reference area) > as a Neumann contribution on the RHS. But for the Integral, Ni * traction* > JxW I need the Piola- Kirchhoff traction. > My idea would be the following: F= PN dA = T dA <=> F/dA= T > I would simply divide the force by the area of the cellsurface. > So my first question is: Can I do it like this or is there a simpler way > of doing it? > And the second question is: How can I access this sort of Information? The > area might for example be computed using the norm of a cross product. But I > am not sure how to get the two vectors for this operation. > > Any help is appreciated. > Thanks a lot with best regards > David > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
