Q. Equilibrium not satisfied in 11.0 to the same criteria that it was in 10.0.?
In a test problem at 11.0 where a force of 5000lbs is applied in Y direction on a beam, FX is not zero(see summary below)
NODE FX FY
1 26417. 4620.4
46 -24519. 6783.4
86 -25819. -580.24
87 -1238.2 -2875.1
88 25156. -2948.3
TOTAL VALUES
VALUE -2.9125 5000.2
A. This is not an error. Changes were made at 11.0 which can effect the convergence pattern.
By default, we only guarantee 0.5% error in force and 0.5% in displacement,
which is cnvtol,U,, 0.005,2, and cnvtol,F,,0.005,2.
In the example give, the error is only 3/5000 = 0.06% in force.
User should always check the force balance after a nonlinear run.
If the default tolerance is not acceptable, user can change it.
Q. Equilibrium not satisfied in 11.0 to the same criteria that it was in 10.0.? In a test problem at 11.0 where a force of 5000lbs is applied in Y direction on a beam, FX is not zero(see summary below) NODE FX FY 1 26417. 4620.4 46 -24519. 6783.4 86 -25819. -580.24 87 -1238.2 -2875.1 88 25156. -2948.3 TOTAL VALUES VALUE -2.9125 5000.2 A. This is not an error. Changes were made at 11.0 which can effect the convergence pattern. By default, we only guarantee 0.5% error in force and 0.5% in displacement, which is cnvtol,U,, 0.005,2, and cnvtol,F,,0.005,2. In the example give, the error is only 3/5000 = 0.06% in force. User should always check the force balance after a nonlinear run. If the default tolerance is not acceptable, user can change it. |
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