Thank you, Prof Bangerth I understood that dealii software uses the weak form to solve any kind of problem. But my question is that in step 8 the weak form for elasticity is for a general case or it is specifically for the plane strain case?
Thanks & Regards Deepika On Mon, Nov 21, 2022 at 10:46 AM Wolfgang Bangerth <bange...@colostate.edu> wrote: > On 11/20/22 07:20, Deepika Kushwah wrote: > > > > I'm trying to solve elasticity problem refereeing step 8 and have got > solution > > for plane strain problem. Now I wish to solve the problem with plane > stress > > condition for which matrix D (constitutive matrix) is to be modified to > get > > stiffness (K = B^T*D*B). > > Not clear where it has been defined in the code and how it can be > modified. > > Deepika: > assemble_system() is always the function where the system matrix is built. > We > do not generally assemble systems via B^T*D*B, however, but rather based > on > the weak formulation of the equation -- that is, the bilinear form that > corresponds to the equation you want to solve. > > A good first step would be to understand what equation step-8 solves, and > how > that corresponds to what that program's assemble_system() does. Then > you'll > have to identify what the bilinear form is for the equation you care > about. > The final step is to translate that in the same way as what the program > currently does. > > Best > W. > > -- > ------------------------------------------------------------------------ > Wolfgang Bangerth email: bange...@colostate.edu > www: http://www.math.colostate.edu/~bangerth/ > > > -- > 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. > To view this discussion on the web visit > https://groups.google.com/d/msgid/dealii/c3a0d03d-93aa-d03c-8d88-87c0be10be1a%40colostate.edu > . > -- ************************************************************************** This e-mail is for the sole use of the intended recipient(s) and may contain confidential and privileged information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies and the original message. Any unauthorized review, use, disclosure, dissemination, forwarding, printing or copying of this email is strictly prohibited and appropriate legal action will be taken. ************************************************************************************************ -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/CAKTdrppPGMKyNOTxjGs9yaom9Tg2wvnTH6mCyr%3DoeHOYUNRqeA%40mail.gmail.com.
