examples/finitestrain.py

nelems=10 Number of elements along edge.
etype=square Type of elements (square/triangle/mixed).
btype=std Type of basis function (std/spline).
degree=1 Polynomial degree.
poisson=.25 Poisson's ratio, nonnegative and stricly smaller than 1/2.
angle=20 Rotation angle for right clamp (degrees).
restol=1e-8 Newton tolerance.
trim=no Create circular-shaped hole.

optimize

solve

solving 44 dof system to machine precision using arnoldi solver

residual decreased by 16.0 orders using 0 krylov vectors

solver returned with residual 3e-17

constrained 44/242 dofs

optimum value 0.00e+00

optimize

solve

solving 198 dof system to machine precision using arnoldi solver

residual decreased by 15.0 orders using 0 krylov vectors

residual decreased by 0.3 orders using 1 krylov vectors

solver returned with residual 1e-15

optimum value 1.50e-01

linear.png

minimize 0%

solve

solving 198 dof system to machine precision using arnoldi solver

residual decreased by 14.8 orders using 0 krylov vectors

residual decreased by 0.2 orders using 1 krylov vectors

solver returned with residual 5e-16

spectrum: 5.9e-01..7.5e+00 (positive definite)

energy -1.80e-02 / e+0.0 and decreasing

minimize 2%

solve

solving 198 dof system to machine precision using arnoldi solver

residual decreased by 14.6 orders using 0 krylov vectors

residual decreased by 0.2 orders using 1 krylov vectors

residual decreased by 0.0 orders using 2 krylov vectors

solver returned with residual 4e-16

spectrum: 5.4e-01..4.7e+00 (positive definite)

energy -1.95e-02 / e+0.5 and decreasing

minimize 4%

solve

solving 198 dof system to machine precision using arnoldi solver

residual decreased by 14.6 orders using 0 krylov vectors

residual decreased by 0.2 orders using 1 krylov vectors

solver returned with residual 3e-16

spectrum: 5.0e-01..1.8e+01 (positive definite)

energy -4.77e-03 / e+1.0 and decreasing

minimize 5%

solve

solving 198 dof system to machine precision using arnoldi solver

residual decreased by 14.6 orders using 0 krylov vectors

residual decreased by 0.1 orders using 1 krylov vectors

residual decreased by 0.1 orders using 2 krylov vectors

solver returned with residual 3e-16

spectrum: 4.9e-01..1.0e+01 (positive definite)

energy -8.94e-03 / e+1.5 and decreasing

minimize 6%

solve

solving 198 dof system to machine precision using arnoldi solver

residual decreased by 14.6 orders using 0 krylov vectors

residual decreased by 0.2 orders using 1 krylov vectors

solver returned with residual 2e-16

spectrum: 4.6e-01..2.1e+01 (positive definite)

energy -4.50e-03 / e+2.0 and decreasing

minimize 8%

solve

solving 198 dof system to machine precision using arnoldi solver

residual decreased by 14.5 orders using 0 krylov vectors

residual decreased by 0.2 orders using 1 krylov vectors

solver returned with residual 2e-16

spectrum: 4.5e-01..1.2e+01 (positive definite)

energy -6.95e-03 / e+2.5 and decreasing

minimize 10%

solve

solving 198 dof system to machine precision using arnoldi solver

residual decreased by 14.6 orders using 0 krylov vectors

residual decreased by 0.1 orders using 1 krylov vectors

residual decreased by 0.0 orders using 2 krylov vectors

solver returned with residual 1e-16

spectrum: 4.2e-01..2.2e+01 (positive definite)

energy -2.43e-03 / e+3.0 and decreasing

minimize 13%

solve

solving 198 dof system to machine precision using arnoldi solver

residual decreased by 14.5 orders using 0 krylov vectors

residual decreased by 0.2 orders using 1 krylov vectors

solver returned with residual 1e-16

spectrum: 4.0e-01..1.3e+01 (positive definite)

energy -1.88e-03 / e+3.5 and decreasing

minimize 19%

solve

solving 198 dof system to machine precision using arnoldi solver

residual decreased by 14.5 orders using 0 krylov vectors

residual decreased by 0.2 orders using 1 krylov vectors

residual decreased by 0.0 orders using 2 krylov vectors

solver returned with residual 3e-17

spectrum: 3.8e-01..2.2e+01 (positive definite)

energy -2.28e-04 / e+4.0 and decreasing

minimize 25%

solve

solving 198 dof system to machine precision using arnoldi solver

residual decreased by 14.5 orders using 0 krylov vectors

residual decreased by 0.2 orders using 1 krylov vectors

solver returned with residual 1e-17

spectrum: 3.7e-01..1.3e+01 (positive definite)

energy -3.88e-05 / e+4.5 and decreasing

minimize 39%

solve

solving 198 dof system to machine precision using arnoldi solver

residual decreased by 14.5 orders using 0 krylov vectors

residual decreased by 0.2 orders using 1 krylov vectors

solver returned with residual 1e-18

spectrum: 3.7e-01..2.1e+01 (positive definite)

energy -2.48e-07 / e+5.0 and decreasing

minimize 54%

solve

solving 198 dof system to machine precision using arnoldi solver

residual decreased by 14.5 orders using 0 krylov vectors

residual decreased by 0.2 orders using 1 krylov vectors

residual decreased by 0.0 orders using 2 krylov vectors

solver returned with residual 6e-20

spectrum: 3.6e-01..1.5e+01 (positive definite)

energy -1.13e-09 / e+5.5 and decreasing

minimize 89%

solve

solving 198 dof system to machine precision using arnoldi solver

residual decreased by 14.6 orders using 0 krylov vectors

residual decreased by 0.1 orders using 1 krylov vectors

residual decreased by 0.1 orders using 2 krylov vectors

solver returned with residual 1e-22

spectrum: 3.6e-01..2.0e+01 (positive definite)

energy -5.11e-15 / e+6.0 and decreasing

minimize 100%

converged in 13 steps to residual 4.3e-11

nonlinear.png