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
stressxx.png
integrating 1 distinct blocks
errors: L2=9.49e-05, H1=2.86e-03