Sorry that I just realized that I wasn't clear in the boundary conditions: I fixed the MIN_X side of the model, and applied -Z traction on the surface of MAX_X. The resultant displacement on the MAX_X surface is about -3e-3 in ABAQUS, but only -2.2e-3 in the libmesh model. The other directions and the magnitude of the displacement vector is also drastically different.
Shawn On Tue, Dec 4, 2018 at 10:53 PM Yuxiang Wang <[email protected]> wrote: > Dear all, > > Sorry to spam again. > > I was playing with ABAQUS & libmesh and noticed that the single element > result for simple linear elasticity model is different. I know that there > could be many factors that is leading to this (e.g. ABAQUS doing tricks > that I am not aware of), but I'd really appreciate it if anyone could help > provide some guesses on why this is the case, even for a simple > single-element model. Thanks! > > Both models are 2x2x2 cubes (from -1 to +1 so the coordinate matches the > bi-unit domain). I added a surface traction of -0.25 in the -Z direction, > and observe the resultant displacements in Z. The ABAQUS model is attached > (Job-1.inp), and the modified elasticity example is also attached. The > resultant displacement, especially at the Z direction, is totally different: > > > [image: image.png] > > Any tips would be much appreciated! > > Best, > Shawn > -- > Yuxiang "Shawn" Wang, PhD > [email protected] > +1 (434) 284-0836 > -- Yuxiang "Shawn" Wang, PhD [email protected] +1 (434) 284-0836 _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
