NUTILS 9.0 "Jook-Sing"

arguments

mode=NURBS{nrefine=2}

radius=0.5

traction=0.1

poisson=0.3

start 2025-04-10 02:34:34

solve

optimizing for argument w (60) using direct method

solving 60 dof system to machine precision using arnoldi solver

constructing symmetric direct preconditioner

peak memory use 198k

residual decreased by 15.5 orders using 0 krylov vectors

residual decreased by 0.0 orders using 1 krylov vectors

residual decreased by 0.0 orders using 2 krylov vectors

residual decreased by 0.0 orders using 3 krylov vectors

solver returned with residual 2e-15

residual norm: 2.4e-15

optimal value: 8.8e-30

hole radius exact up to L2 error 7.07e-17

solve_constraints

optimizing for argument u (60,2) with drop tolerance 1e-15

residual norm: 0.0e+00

optimal value: 0.0e+00

constrained 12 degrees of freedom of u

solve_constraints

optimizing for argument u (60,2) with drop tolerance 1e-15

solving 18 dof system to machine precision using arnoldi solver

constructing symmetric direct preconditioner

peak memory use 148k

residual decreased by 15.7 orders using 0 krylov vectors

residual decreased by 0.2 orders using 1 krylov vectors

residual decreased by 0.1 orders using 2 krylov vectors

solver returned with residual 2e-17

residual norm: 1.8e-17

optimal value: 9.7e-08

constrained 18 degrees of freedom of u

solve

solving for argument u (60,2) using direct method

solving 90 dof system to machine precision using arnoldi solver

constructing direct preconditioner

peak memory use 327k

residual decreased by 15.4 orders using 0 krylov vectors

residual decreased by 0.0 orders using 1 krylov vectors

solver returned with residual 4e-16

residual norm: 4.0e-16

eval_once

loop 0 88%

RuntimeWarning: singular matrix In compiled_abc714ab0f377a6c803ce750c25698b5305e2a0d:109

stressxx.png

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

finish 2025-04-10 02:34:37, elapsed 0:03