We calculated springback and the released part doesn’t match the target. One way to address this is to change the die so the part moves toward the intended shape after release.
That is die compensation. It is different from changing a blank outline: here the die shape itself is being modified.
You need an initial run first
Start from a completed forming and springback calculation, called iteration 0. The compensation loop needs that result to work from.
The source mesh for tool building must represent the tool properly. The documented method rebuilds tools from the compensated source, so review the Tool Builder definitions and positioning before starting the loop.
If you change the mesh quality at this point, repeat iteration 0 so the baseline belongs to the model you are now using.
Define the target and tool
Open the compensation controls and choose the compensated OP. Its final stage must be springback for the documented loop.
Select the target blank shape and the tool to compensate. The described starting target is the trimmed blank before springback in the initial study; check that you have selected the intended object and state.
Review the compensation factor, single or automatic iteration mode, and the distance-based convergence condition. A required proportion within tolerance can be met while other areas remain outside it.
Let the loop rebuild and recalculate
Assign hosts for optimization, linear analysis and the forming stages. The loop deforms the die, generates new tools, creates the next project and runs forming and springback again.
You can also write preprocessing data for a separate launch workflow. Choose that deliberately; writing the next setup does not itself calculate the next result.
Review trim-line and drawbead updating, shape controls and any locked areas. Restrictions can preserve selected geometry, but they also influence what compensation can achieve.
Compare an iteration with its target
Use the console, distance histories and contours together. Inspect local shape changes and the generated die, including undercut-related results where relevant.
Recheck forming quality too. The changed die can alter thinning and material flow. Keep the accepted iteration and explain the criterion it met.
If other operations must adapt to this change, continue with multi-operation compensation. The next tool still has to receive the part produced by the changed process.
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