analysis

analysis#

This is the command issued to configure an analysis.

Model.analysis(type, *opts)#

Set the analysis type to be performed on the next call to Model.analyze().

Parameters:

  • type (string) –

    The analysis type. Three variants are supported:

    • ”Static” : for static analysis

    • ”Transient” : for standard dynamic analysis with constant time step

    • VariableTransient : for transient analysis with variable time step

  • opts – Additional optional arguments for the analysis type.

Note

The components of the analysis, i.e. numberer, constraint handler, system, test, integrator, algorithm, should all be issued before the analysis object is created.

The <-numSublevels $x -numSubSteps $y> options only work for Transient.

The VariableTransient option is still available. The optional additions for the Transient analysis have been found to provide better options for nonlinear problems with convergence issues.

Warning

When switching from one type of analysis to another, e.g. Static to Transient, it is necessary to issue a wipeAnalysis.

Examples#

The following example shows how to construct a Static analysis.

system SuperLU
constraints Transformation
numberer RCM
test NormDispIncr 1.0e-12  10 3
algorithm Newton
integrator LoadControl 0.1
analysis Static

The following example shows how to construct a Transient analysis.

system SuperLU
constraints Transformation
numberer RCM
test NormDispIncr 1.0e-12  10 3
algorithm Newton
integrator Newmark 0.5 0.25
analysis Transient -numSubLevels 3  -numSubSteps 10

Code Developed by fmk

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