Hello everyone, I am quite new to dealii and FEM field in general, so apologies if my questions seems trivial.
In an effort to understand linearized elasticity, I was comparing FEM solution of step-8 (after changing the mesh to cantilever beam of the below specs) to euler-bernouli static beam deflection ode Euler–Bernoulli beam theory <https://en.wikipedia.org/wiki/Euler%E2%80%93Bernoulli_beam_theory>. Mesh : - slender rod of length 0.15 m (length is direction of x ) - square cross-section (0.0025x0.0025) (yz direction in which the origin is the center of the square), - fixed at x=0, free at x = 0.15. - mesh resolution in x, y and z is 1000,1,1 respectively. I noticed that when I use linear shape functions with an increasing mesh x resolution, the solution seems to approach euler-bernoulli ode solution. however, when I use higher order shape functions, fem solution do not converge as the linear shape function case. I suspect that maybe it is due to the missing boundary values on the free end (e.g 2nd derivative = 0). how would that apply in the context of linearized elasticity in 3d and dealii framework? I would also be grateful if I am pointed at the correct direction if this line of thinking is incorrect. -- 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/6d5ad4e4-2941-481b-a111-6f25f3983581n%40googlegroups.com.
