The Hydroform Cycles node provides the following option:

This setup option can affect the number of draws, that is, the number of occurrences of the Hydroform Deep Draw operation required to produce a given form. See Number of Forming Draws and Number of Draws Based on Aggregate Width of Important Forms.

By default, this is specified by the cost model variable defaultMatlDeratePercent(10% in starting point VPEs). Use this to override the default behavior for parts that use high-strength material. Enter a value between 0% and 50%. Increasing this value can increase the number of draws.

High-strength material is defined as material with a tensile yield strength of 344.74 Mpa in starting point VPEs. VPE administrators can customize this threshold with the cost model variable highStrengthMatlThreshold. (344.74MPa in starting point VPEs).

If the part’s Xsections form step-like groups, the number of draws (see Number of Forming Draws) is the number of such groups. An Xsection ends one step-like group and starts another step-like group if its SER area is a sufficiently small fraction of the SER area of the immediately preceding Xsection (going from bottom to top). What counts as a sufficiently small fraction is specified by the cost model variable percentChangeBetweenValidSteps (0.65 in starting point VPEs). The number of draws is 1 + the number of Xsections that start a step-like group in this sense (the part’s top-most Xsection is not included for this purpose).

If the part’s Xsections don’t form step-like groups, the number of draws (see Number of Forming Draws) is calculated based on the aggregate width of the primary forms (see Important Forms for Hydroforming), and on the form width reduction produced by each draw. The lookup table drawReductionPrecentage lists the percentage of the pre-draw width that remains after a given draw (that is, initial draw, first subsequent draw, second subsequent draw, or third subsequent draw) for a given material thickness. For example, for the second subsequent draw of 1-inch-thick material, the table lists 81%. This means that the second subsequent draw (for 1-inch-thick material) results in a width that is 81% of the form’s width immediately prior to that occurrence of the draw operation.

For high-strength materials, the percentage listed in the lookup table is itself increased by 10 percent, by default in starting point VPEs. For example, for the second subsequent draw of 1-inch-thick material, the table value of 81% is increased by 10 percent to 81.8%, for high-strength material. VPE administrators can customize the 10 percent default with the cost model variable defaultMatlDeratePercent. You can override the default on a per-part basis with the PSO High Strength Material Derate Percentage.

High-strength material is defined as material with a tensile yield strength of 344.74 Mpa in starting point VPEs. VPE administrators can customize this threshold with the cost model variable highStrengthMatlThreshold. (344.74MPa in starting point VPEs).