3.2.4. test Command

This command is used to construct the Convergence Test. The convergence test is that object the algorithm Command uses to detect if convergence has been achieved. The convergence test is applied to the matrix equation, \(Ax=b\) stored in the system Command. In the finite element setting and under normal integration schemes and algorithms, the \(x\) corresponds to the displacement increment and \(b\) the unbalanced forces.

test testType? arg1? ...

The following contain information about testType? and the args required for each of the available system types:

• 3.2.4.1. Norm Unbalance
• 3.2.4.2. Norm Displacement Increment
• 3.2.4.3. Energy Increment
• 3.2.4.4. Relative Norm Unbalance
• 3.2.4.5. Relative Energy Increment Test
• 3.2.4.6. Total Relative Norm Displacement Increment
• 3.2.4.7. Fixed Number Iterations Test