This section describes the individual pages in the Job
Diagnostics dialog box (the available pages depend on the analysis
type and results).
In a typical
Abaqus/Standard
analysis a load is applied to the model in increments, and
Abaqus
attempts to calculate the model's response to each incremental load.
Abaqus
further reduces the response calculations by performing iterations to approach
the result for an increment. If the iterations are not approaching a solution
(converging),
Abaqus
stops and attempts to solve again, this time with a smaller load increment. If
Abaqus
makes too many attempts without a solution, the analysis is ended. For more
information about load increments, see
Analysis Solution and Control.
In an
Abaqus/Explicit
analysis, incrementation is based on a large number of small time increments.
The time incrementation is made according to an estimated stable time increment
size based on the size of the elements in the model.
Abaqus/Explicit
uses a central-difference time integration rule to integrate the equations of
motion, so there is no need for multiple attempts and iterations in each
increment.
Viewing the diagnostic information can help you determine the causes of
convergence problems so that you can make the necessary corrections in the
model. Diagnostic information also indicates potential problems and areas for
improvement even when a converged solution is reached. With proper
interpretation of the available diagnostic information, you can improve a model
to achieve the results that match your analysis intent.