Break a Large Model Into Submodels

AFT Arrow provides convenient features for deleting parts of your model and merging parts back in. A section of your model can be quickly deleted by selecting it on the Workspace and choosing Delete from the Edit menu. If the section is instead Cut, it can be Pasted into a new model of its own for testing or holding. At a later time the removed sections can be added back into the current model by using the Merge feature on the File menu.

The advantage of breaking your model into sub-models is that you can investigate the convergence characteristics of each part of your model independently. If you can get each sub-model to converge, you should be able to get the original model to converge also. If one of your sub-models will not converge, it is doubtful your original model will converge either.