Result convergence criteria consists of a collection of entities, the results type you want, the number of refinements, Stop Criteria, and the refinement threshold. The goal of convergence criteria is to specify the result type and maximum number of h refinements desired to reach convergence. Convergence can occur in fewer refinements than requested in the settings dialog box. The resulting Convergence Plot displays:
This information is specified in the Convergence Settings dialog box.
|
Access: |
Ribbon:
Stress Analysis tab
Mesh panel
Convergence Settings
|
To set convergence criteria, click the Convergence Settings command, and in the dialog box that displays specify the preferred settings.
Convergence Settings - Static Simulations
| Maximum Number of h Refinements |
Specifies the maximum number of h refinement cycles for convergence. Default is 0. For values higher than 2, a dialog box displays. Increasing the number of refinements could decrease performance. Value increment is 1. If the Stop Criteria is met, the refinements can cease before the maximum number is reached. |
|
| Stop Criteria (%) |
Ceases refinement when the difference between the last two results is less than the specified (%) value. Value increment is 1. The refinement can also cease when the maximum number of refinements is reached, regardless of whether Stop Criteria is met. |
|
| h Refinement Threshold (0 to 1) |
Specifies the refinement threshold (between 0 to 1). A zero setting means include all the elements in the set as candidates for refinement. The results are the maximum refinement per cycle. 1 means exclude all elements in the set from refinement, as in no refinement. The default is .75, which means, of the elements with equivalent errors at the top, 25% are subject to refinements. Not applicable to Modal analysis. Value increment is 0.1. |
|
| Results to Converge | ||
| Von Mises Stress | Specifies Von Mises Stress as the result component. | |
| 1st Principal Stress | Specifies 1st Principal Stress as the result component. | |
| 3rd Principal Stress | Specifies 3rd Principal Stress as the result component. | |
| Displacement | Specifies Displacement as the result component. | |
| Geometry Selections | ||
| All Geometry | Specifies that all geometry is considered for the convergence criteria. | |
| Include Selected Geometry | Specifies that only the items in the list are included as the set in the convergence criteria. | |
| Exclude Selected Geometry | Specifies that the items in the list are excluded from the set in the convergence criteria. | |
| Bodies | Filters the list to display only bodies. | |
| Faces | Filters the list to display only faces. |
Convergence Settings - Modal Simulations
| Maximum Number of h Refinements |
Specifies the maximum number of h refinement cycles for convergence. Default is 0. For values higher than 2, a dialog box displays. Increasing the number of refinements could decrease performance. |
|
| Stop Criteria (%) | Ceases refinement when the difference between the last two results is less than the specified (%) value. | |
| Results to Converge | ||
| Frequency Mode | Specifies the mode number for results convergence. |