Engineering DisclaimerEngineering calculations are provided for preliminary design and educational/reference purposes only. Users must verify all results according to applicable engineering standards, supplier data, manufacturing requirements, and professional engineering judgment.
STANDARD FORMULA
Manufacturing
Sheet Metal Bend Allowance & Deduction
Evaluate flat pattern dimension factors including bend allowance, bend deduction, and K-factor calibration.
Workspace Mode:
Unsaved Configuration
Calculation Results
Bend Allowance (BA)
2.500mm
Arc length of the neutral axis.
Bend Deduction (BD)
2.500mm
Value deducted from outside dimensions.
Calculation Summary
Input Parameters
| Sheet Metal Thickness (T) | 2mm |
| Inside Bend Radius (R) | 2mm |
| Bend Angle (θ) | 90deg |
| Neutral Axis Factor (K) | 0.33 |
Calculated Results
| Bend Allowance (BA) | 2.50mm KEY |
| Bend Deduction (BD) | 2.50mm |
Safety Notes
This is a dynamic placeholder interface. Calculations will activate in a future release.
Mathematical Models & Equations
Bend Allowance
BA = θ * (π / 180) * (R + K * T)Bend Deduction
BD = 2 * (R + T) * tan(θ/2) - BAVerification Calculation Log
- 1Retrieve input parameters from form controls.
- 2Substitute first active variable: Input = 2.
- 3Sprint 3 Placeholder: Formula computations will activate in future releases.
Engineering Application Notes
K-factors are determined by material ductility and punch tool geometries. Calibrate parameters using flat test cuts on specific brake tooling.
Standard Citations & References
- SMACNA Sheet Metal Guidelines
- Machinery's Handbook Bending Section