- nrefine=2 Number of uniform refinements starting from 1x2 base mesh.
- traction=.1 Far field traction (relative to Young's modulus).
- radius=.5 Cut-out radius.
- poisson=.3 Poisson's ratio, nonnegative and strictly smaller than 1/2.

integrating 1 distinct blocks

hole radius exact up to L2 error 9.36e-17

project

projection type: lsqr

integrating 1+1+1+1 distinct blocks

solve

solving 60x60 system using direct solver

solver returned with residual 5e-17

constrained 60/60 dofs, error 0.00e+00/area

optimize

integrating 1+2+4 distinct blocks

constrained 12/120 dofs

optimum value 0.00e+00

optimize

integrating 1+2+2 distinct blocks

solve

solving 18x18 system using direct solver

solver returned with residual 2e-17

constrained 30/120 dofs

optimum value 9.74e-08

integrating 1+2 distinct blocks

solve

solving 90x90 system using direct solver

solver returned with residual 4e-16

evaluating 88%

RuntimeWarning: singular matrix
In /home/docs/checkouts/readthedocs.org/user_builds/nutils/checkouts/latest/nutils/warnings.py:30

RuntimeWarning: invalid value encountered in less
In /home/docs/checkouts/readthedocs.org/user_builds/nutils/envs/latest/lib/python3.7/site-packages/matplotlib/colors.py:527

integrating 1 distinct blocks

errors: L2=9.49e-05, H1=2.86e-03