On 8/17/19 2:49 AM, 张嘉宁 wrote:
> I am the new one here, and recently I test a program solving elastic problem
> considering neumann boundary conditions. So I finish it on the basis of
> Step-17 by adding the neumann boundary conditions. I found that wen lame and
> mu are not large (i.e. equals to 1 by default), the solution seems right.
> But
> when I set the lame and mu to the parameters of stell, the solutions is
> always
> zero. Interesting, if the lame and mu are not so large, part of the solution
> is zero but the other part is not. Anyone know the reason?
Is the solution exactly equal to zero, or just small?
It does make sense that if the parameters become large, the deformation
becomes small if you keep the force the same: after all, if you apply a bit of
force to a pillow made of cloth, you will get a deformation of a few
centimeters. If the pillow were made of steal, you'd get a deformation of only
a few micrometers.
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/3416d1a2-dc06-7f9e-e54e-1ca4a75d0a9e%40colostate.edu.
