Relative Total Norm Unbalance Convergence Test
The Relative Total Norm Unbalance test checks convergence based on the ratio of the norm of the unbalanced force vector to the norm of the total applied force vector.
Description
This test is particularly suitable for:
Force-controlled problems with cumulative loading
Cases where total force history is important
Nonlinear static analysis
Problems with significant material nonlinearity
The test calculates the ratio of the unbalanced force norm to the total applied force norm and compares it to a specified tolerance.
Parameters
Parameter |
Type |
Description |
---|---|---|
|
float |
Tolerance for convergence (default: 1.0e-6) |
|
int |
Maximum number of iterations (default: 10) |
|
int |
Print flag for convergence information (default: 0) |
|
int |
Norm type to use: 0 for max-norm, 1 for 1-norm, 2 for 2-norm (default: 2) |
Usage Example
# Create a Femora instance
# Create a Relative Total Norm Unbalance convergence test
fm.analysis.test.create_test("RelativeTotalNormUnbalance", tol=1.0e-6, maxIter=10, printFlag=0, normType=2)