D3PLOT 22.1
METAL FORMING Data Values
METAL FORMING data values
The panel allows a Forming Limit Curve (FLC) to be read in from a curve file (see figure right), or to be generated by D3PLOT from an equation (see figure below right). The curve file name is entered in the box.
The following parameters are added to generate the other curves:
| ) | |
| Allowable Thinning | |
| Wrinkle Slope |
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If the FLC is generated from an equation the following parameters are entered in the boxes: , and .  |
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The FLD curves are then generated according to an empirical formula which is generally applicable for steels as follows: |
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E[major] = FLD + E[minor]
* ( 0.042 * E[minor]+0.627 )
E[major] = FLD + E[minor] * (-0.0086 * E[minor]+0.785) |
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Where |
FLD | = | ( N/0.2116 ) * ( 23.36 + 14.042*min(T, 3.0)) | |
| N | = | Work Hardening Parameter | ||
| T | = | Material Thickness (mm) |
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Other data values |
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| Anisotropic Parameter (R) | Used to automatically generate uniaxial tension and uniaxial compression curves, see FLD PLOT - Forming Limit Diagram . | |
| Safety Margin %age | The safety curve on the and plots is automatically generated by subtracting the constant percentage of strain from the FLC. | |
| Allowable Thinning | Severe thinning occurs if |
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| Low Strain | Strains are ignored if |
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| Wrinkle Slope | Sets the gradient of the severe wrinkles curve, see FLD PLOT - Forming Limit Diagram . | |
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where
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E (major) , E (minor) | Engineering major/minor strains |