Restarting after modifying existing analysis steps

You can use the restart capability to analyze your model and then modify an existing step before continuing the analysis. This section describes an example of this usage.

Assume that you have done the following:

  • Created a model called Model-A that has two analysis steps, Step-1 and Step-2.

  • Used the Edit Restart Requests dialog box in the Step module to output the restart information at the end of each step.

  • Created a job called Job-A that uses Model-A.

  • Analyzed the model.

After examining the results of Job-A, you realize that you need to make changes to Step-2, to an output request in Step-2, or to a prescribed condition in Step-2, such as a load or boundary condition. You may also want to add some new steps with additional output requests and loads and with changes to the boundary conditions. You know that you can still use the results from Step-1; however, you realize that the results from Step-2 are no longer valid. The restart capability allows you to recompute the results for Step-2 without having to repeat the computations for Step-1. The following steps describe a recommended procedure to follow:

  1. Copy Model-A to a new model, say Model-A-restart, and make Model-A-restart the current model.

  2. Do the following:

    • Make the desired changes to Step-2.

    • Add new steps after Step-2.

    • Create new prescribed conditions in Step-2 and subsequent steps.

  3. From the main menu bar, select ModelEdit AttributesModel-A-restart. From the Edit Model Attributes dialog box that appears, do the following:

    • Enter Job-A as the job from which the restart data will be read.

    • Set the restart location:

      • Enter Step-1 to indicate the step from which the restart data will be read.

      • Choose Restart from the end of the step. Step-2 will continue the analysis after the end of Step-1.

  4. Copy Job-A to a new job, say Job-A-restart, that uses Model-A-restart. Abaqus/CAE sets the job type to Restart.

  5. Submit Job-A-restart for analysis.