Hello Bangerth, The terms N_* are the resultant forces in the * direction and these forces are calculated using the strains which in turn are calculated using the displacements u. So the terms N_* are not constants, rather change with each element. And these values directly depend on u.
Thank you. Regards, Ramprasad On Mon, Jun 24, 2019 at 10:56 PM Wolfgang Bangerth <[email protected]> wrote: > On 6/24/19 9:24 AM, Ramprasad R wrote: > > > > The following image has the exact formulation of the geometric stiffness > > matrix. Which is denoted by G in the image. > > Ramprasad, > I don't think I quite understand the connection step-60. In the context > of that problem, for which of the two variables (u and lambda) do you > want to compute that matrix? Assuming you mean that it is supposed to be > for u, it is not difficult to write down what you need to do based on > what you already learn in step-3 or step-4, for example. In fact, these > two early programs already implement the first two terms of G_ij if you > assume that N_x=N_y=N_xy=1. > > I am not familiar with the terms used in the page you show. Are the N_* > factors constants? Are they functions of space? > > Best > W. > > > -- > ------------------------------------------------------------------------ > Wolfgang Bangerth email: [email protected] > 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 [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/dealii/53a1ebd3-fdd4-485d-2486-b70913095c55%40colostate.edu > . > For more options, visit https://groups.google.com/d/optout. > -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/CAKS2Wq58q8AU%2BJ%3DKR2Y7aExCd%2BFa1onWQMHR6EJv6-ADST8UKQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
