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<DIV>I am using SNES to solve a superelastic large deformatoin beam problem. The
model contains only one brick element.</DIV>
<DIV>I am solving the problem using both a FE and a RBF meshfree approximation.
The code flows in the same way and switching between</DIV>
<DIV>the two different approximation is just a change in shape function. The FE
method converges well and matched with another code's results.</DIV>
<DIV>However, the rbf meshfree method does not converge. I combed the code and
could not find a reason. </DIV>
<DIV>The following is the output. Anyone can give me a hint what is
happening.</DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV>c:\pgfem -snes_monitor -ksp_type fgmres -ksp_monitor_true_residual
-ksp_gmres_modifiedgramschmidt -ksp_rtol 1e-10 -pc_type none</DIV>
<DIV> </DIV>
<DIV>atol=1e-050, rtol=1e-008, stol=1e-008, maxit=50, maxf=10000<BR> 0
SNES Function norm 7.071067597552e-001 <BR> 0 KSP preconditioned resid
norm 7.071067597552e-001 true resid norm 7.071067597552e-001 ||Ae||/||Ax||
1.000000000000e+000<BR> 1 KSP preconditioned resid norm
6.487378720919e-001 true resid norm 6.487378720919e-001 ||Ae||/||Ax||
9.174539249441e-001<BR> 2 KSP preconditioned resid norm
5.946077657343e-001 true resid norm 5.946077657343e-001 ||Ae||/||Ax||
8.409023920802e-001<BR> 3 KSP preconditioned resid norm
5.819067797177e-001 true resid norm 5.819067797177e-001 ||Ae||/||Ax||
8.229404848557e-001<BR> 4 KSP preconditioned resid norm
5.782978365298e-001 true resid norm 5.782978365298e-001 ||Ae||/||Ax||
8.178366682988e-001<BR> 5 KSP preconditioned resid norm
5.781901258865e-001 true resid norm 5.781901258865e-001 ||Ae||/||Ax||
8.176843424417e-001<BR> 6 KSP preconditioned resid norm
5.206124902964e-001 true resid norm 5.206124902965e-001 ||Ae||/||Ax||
7.362572668330e-001<BR> 7 KSP preconditioned resid norm
4.698325347773e-001 true resid norm 4.698325347774e-001 ||Ae||/||Ax||
6.644435628646e-001<BR> 8 KSP preconditioned resid norm
2.252503531363e-001 true resid norm 2.252503531382e-001 ||Ae||/||Ax||
3.185521139923e-001<BR> 9 KSP preconditioned resid norm
6.934719137364e-002 true resid norm 6.934719137322e-002 ||Ae||/||Ax||
9.807174152489e-002<BR> 10 KSP preconditioned resid norm
2.116841871461e-003 true resid norm 2.116841872136e-003 ||Ae||/||Ax||
2.993666575708e-003<BR> 11 KSP preconditioned resid norm
2.248666383380e-005 true resid norm 2.248666456589e-005 ||Ae||/||Ax||
3.180094696545e-005<BR> 12 KSP preconditioned resid norm
1.982194861438e-005 true resid norm 1.982195167981e-005 ||Ae||/||Ax||
2.803247374791e-005<BR> 13 KSP preconditioned resid norm
7.277668728205e-007 true resid norm 7.277725200859e-007 ||Ae||/||Ax||
1.029225799422e-006<BR> 14 KSP preconditioned resid norm
5.491308415661e-007 true resid norm 5.491254698377e-007 ||Ae||/||Ax||
7.765807104259e-007<BR> 15 KSP preconditioned resid norm
1.986082449735e-008 true resid norm 1.986464500270e-008 ||Ae||/||Ax||
2.809285122600e-008<BR> 16 KSP preconditioned resid norm
2.868546981451e-012 true resid norm 2.473921585844e-011 ||Ae||/||Ax||
3.498653564987e-011<BR> 1 SNES Function norm 6.961586744390e-001
<BR> 0 KSP preconditioned resid norm 6.961586744390e-001 true resid norm
6.961586744390e-001 ||Ae||/||Ax|| 1.000000000000e+000<BR> 1 KSP
preconditioned resid norm 5.912814321436e-001 true resid norm
5.912814321436e-001 ||Ae||/||Ax|| 8.493486526188e-001<BR> 2 KSP
preconditioned resid norm 5.867863600876e-001 true resid norm
5.867863600876e-001 ||Ae||/||Ax|| 8.428916878189e-001<BR> 3 KSP
preconditioned resid norm 5.743057651077e-001 true resid norm
5.743057651077e-001 ||Ae||/||Ax|| 8.249638856696e-001<BR> 4 KSP
preconditioned resid norm 5.713990222419e-001 true resid norm
5.713990222419e-001 ||Ae||/||Ax|| 8.207884828877e-001<BR> 5 KSP
preconditioned resid norm 5.712949806941e-001 true resid norm
5.712949806941e-001 ||Ae||/||Ax|| 8.206390319772e-001<BR> 6 KSP
preconditioned resid norm 5.144041331498e-001 true resid norm
5.144041331499e-001 ||Ae||/||Ax|| 7.389179393110e-001<BR> 7 KSP
preconditioned resid norm 4.642286939843e-001 true resid norm
4.642286939846e-001 ||Ae||/||Ax|| 6.668432227160e-001<BR> 8 KSP
preconditioned resid norm 2.225622386414e-001 true resid norm
2.225622386428e-001 ||Ae||/||Ax|| 3.197004459108e-001<BR> 9 KSP
preconditioned resid norm 6.852028979252e-002 true resid norm
6.852028979329e-002 ||Ae||/||Ax|| 9.842625296383e-002<BR> 10 KSP
preconditioned resid norm 2.091417649890e-003 true resid norm
2.091417651046e-003 ||Ae||/||Ax|| 3.004225513287e-003<BR> 11 KSP
preconditioned resid norm 2.221359037659e-005 true resid norm
2.221359037215e-005 ||Ae||/||Ax|| 3.190880353542e-005<BR> 12 KSP
preconditioned resid norm 1.804209918914e-005 true resid norm
1.804209941359e-005 ||Ae||/||Ax|| 2.591664813792e-005<BR> 13 KSP
preconditioned resid norm 1.533714545172e-005 true resid norm
1.533714905817e-005 ||Ae||/||Ax|| 2.203111104021e-005<BR> 14 KSP
preconditioned resid norm 5.645319291054e-008 true resid norm
5.645404908731e-008 ||Ae||/||Ax|| 8.109365172072e-008<BR> 15 KSP
preconditioned resid norm 3.193476220728e-010 true resid norm
3.097685921426e-010 ||Ae||/||Ax|| 4.449683721779e-010<BR> 16 KSP
preconditioned resid norm 3.809088792508e-012 true resid norm
2.536256355736e-011 ||Ae||/||Ax|| 3.643215905885e-011<BR> 2 SNES Function
norm 6.943721478945e-001 <BR> 0 KSP preconditioned resid norm
6.943721478945e-001 true resid norm 6.943721478945e-001 ||Ae||/||Ax||
1.000000000000e+000<BR> 1 KSP preconditioned resid norm
6.312241812914e-001 true resid norm 6.312241812914e-001 ||Ae||/||Ax||
9.090574603338e-001<BR> 2 KSP preconditioned resid norm
5.826977509711e-001 true resid norm 5.826977509711e-001 ||Ae||/||Ax||
8.391721251177e-001<BR> 3 KSP preconditioned resid norm
5.690491242974e-001 true resid norm 5.690491242974e-001 ||Ae||/||Ax||
8.195160563725e-001<BR> 4 KSP preconditioned resid norm
5.668884553347e-001 true resid norm 5.668884553347e-001 ||Ae||/||Ax||
8.164043691178e-001<BR> 5 KSP preconditioned resid norm
5.667877314429e-001 true resid norm 5.667877314429e-001 ||Ae||/||Ax||
8.162593116120e-001<BR> 6 KSP preconditioned resid norm
5.103464760431e-001 true resid norm 5.103464760434e-001 ||Ae||/||Ax||
7.349754416143e-001<BR> 7 KSP preconditioned resid norm
4.605661569558e-001 true resid norm 4.605661569565e-001 ||Ae||/||Ax||
6.632843185791e-001<BR> 8 KSP preconditioned resid norm
2.208053445289e-001 true resid norm 2.208053445308e-001 ||Ae||/||Ax||
3.179928014111e-001<BR> 9 KSP preconditioned resid norm
6.797979448157e-002 true resid norm 6.797979448302e-002 ||Ae||/||Ax||
9.790109624810e-002<BR> 10 KSP preconditioned resid norm
2.074808319295e-003 true resid norm 2.074808318610e-003 ||Ae||/||Ax||
2.988035054259e-003<BR> 11 KSP preconditioned resid norm
2.203325006674e-005 true resid norm 2.203324811647e-005 ||Ae||/||Ax||
3.173118072677e-005<BR> 12 KSP preconditioned resid norm
1.823511305062e-005 true resid norm 1.823511045569e-005 ||Ae||/||Ax||
2.626129304147e-005<BR> 13 KSP preconditioned resid norm
1.735630734709e-005 true resid norm 1.735630720647e-005 ||Ae||/||Ax||
2.499568460385e-005<BR> 14 KSP preconditioned resid norm
2.741404670294e-008 true resid norm 2.741193558629e-008 ||Ae||/||Ax||
3.947729710849e-008<BR> 15 KSP preconditioned resid norm
1.660262277254e-010 true resid norm 1.728810158968e-010 ||Ae||/||Ax||
2.489745828962e-010<BR> 16 KSP preconditioned resid norm
4.907918572393e-012 true resid norm 1.668357561843e-011 ||Ae||/||Ax||
2.402685025461e-011<BR> 3 SNES Function norm 6.943722078847e-001 <BR>STEP
0 (Newton iterations: 3)</DIV>
<DIV> </DIV>
<DIV>diverged reason: DIVERGED_LS_FAILURE</DIV>
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