Forming Engineering

Keeler-Goodwin FLD Major Strain Threshold calculator

Keeler-Goodwin FLD Major Strain Threshold engineering calculator.

Runnable This tool can run, but independent engineering verification has not been established.

Quick Answer

Calculate Keeler-Goodwin FLD Major Strain Threshold

Calculator

Major strain limit (dimensionless)
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Result Interpretation

Keeler-Goodwin FLD Major Strain Threshold calculator computes Major strain limit in dimensionless using the defined engineering formula and the input values provided. Major strain limit is expressed in dimensionless. No universal acceptance threshold is defined by this calculator.

Worked Example

Verified calculation

Given:

  • Strain hardening exponent = 0.22
  • Average Lankford coefficient = 1.4
  • Thickness-to-die-radius ratio = 0.025
  • Linear strain path parameter (0 = uniaxial, 0.5 = plane-strain, 1.0 = equibiaxial) = 0.5

Expected Result:

  • Major strain limit = 0.4510332236863

Engineering Interpretation:

Under the given input conditions, the calculated result is: Major strain limit = 0.4510332236863 dimensionless.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from deterministically validated test cases.

Formula / Method

major strain limit = (1.0 + strain hardening exponent) * pow(average lankford coefficient, 0.5) * pow(thickness-to-die-radius ratio, 0.2) * (1.0 - 0.5 * log(1.0 + exp(-10.0 * (0 = uniaxial, 0.5 = plane-strain, 1.0 = equibiaxial - 0.5))))

Formula family: formula_forming_forming_limit_diagram_fld_major_strain_threshold_calculator

Variables

SymbolLabelRoleDescription
n Strain hardening exponent INPUT Strain hardening exponent
R_bar Average Lankford coefficient INPUT Average Lankford coefficient
t_over_d Thickness-to-die-radius ratio INPUT Thickness-to-die-radius ratio
strain_path_parameter Linear strain path parameter (0 = uniaxial, 0.5 = plane-strain, 1.0 = equibiaxial) INPUT Linear strain path parameter (0 = uniaxial, 0.5 = plane-strain, 1.0 = equibiaxial)
major_strain_limit Major strain limit OUTPUT Major strain limit

Calculation Steps

  1. Enter the strain hardening exponent in dimensionless.
  2. Enter the average lankford coefficient in dimensionless.
  3. Enter the thickness-to-die-radius ratio in dimensionless.
  4. Enter the linear strain path parameter (0 = uniaxial, 0.5 = plane-strain, 1.0 = equibiaxial) in dimensionless.
  5. Step 1: Compute major strain limit.
  6. Read the major strain limit (dimensionless) from the results.

Engineering Summary

Calculate Keeler-Goodwin FLD Major Strain Threshold

Frequently Asked Questions

What does this calculator calculate?

The Keeler-Goodwin FLD Major Strain Threshold calculator estimates Major strain limit based on the input parameters you provide

Why is strain hardening exponent important in this calculation?

strain hardening exponent is directly proportional to major strain limit. When you enter strain hardening exponent in dimensionless, the calculator uses it in the engineering formula to compute the output

How should I interpret the result major strain limit?

The calculator outputs major strain limit in dimensionless. The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Strain hardening exponent (dimensionless), Average Lankford coefficient (dimensionless), Thickness-to-die-radius ratio (dimensionless), Linear strain path parameter (0 = uniaxial, 0.5 = plane-strain, 1.0 = equibiaxial) (dimensionless). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

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