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K-Factor

K-Factor is a ratio that represents the location of the neutral sheet with respect to the thickness of the sheet metal part.

When you select K-Factor as the bend allowance, you can specify a K-Factor bend table. The SOLIDWORKS application also comes with a K-Factor bend table in Microsoft Excel format. This is located in install_dir\lang\English\Sheetmetal Bend Tables\kfactor base bend table.xls.

You can specify different values for the K-Factor in different configurations.
You can also apply a material-based default K-Factor by using a Sheet Metal Gauge table.

Bend allowance with a K-Factor is calculated as follows:

BA=pi(R + KT) A/180

where:

  • BA = bend allowance
  • R = inside bend radius
  • K = K-Factor, which is t / T
  • T = material thickness
  • t = distance from inside face to neutral sheet
  • A = bend angle in degrees (the angle through which the material is bent)
shm_kfactor_bendallow.gif


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