Elastic Constants Calculator

Your details

Select the first elastic constant you know.
Enter the value. Poisson's ratio (nu) is dimensionless; modulus values use the selected unit.
Select the second elastic constant you know.
For Poisson's ratio enter a dimensionless value between -1 and 0.5 (most materials 0 to 0.5).
Unit for all modulus inputs and outputs. Poisson's ratio is always dimensionless.
E - Young's modulus
200

Stiffness under uniaxial tension (E = stress / strain)

G - Shear modulus76.9231
K - Bulk modulus166.6667
nu - Poisson's ratio0.3
lambda - Lame's first constant115.3846
M - P-wave modulus269.2308
UnitGPa
Input pair solvedE, nu
E (Young's)200
G (Shear)76.9231
K (Bulk)166.6667
M (P-wave)269.2308

Material solved: E = 200.0 GPa, nu = 0.3000

  • Typical of most engineering metals (steel ~0.30, aluminum ~0.33).
  • G/K ratio of 0.46: balanced shear and bulk stiffness, common in structural metals.
  • Young's modulus in the structural steel range (~200 GPa).

Next stepUse these constants in FEA software (Abaqus, ANSYS, COMSOL) to define a linear elastic isotropic material. Most FEA packages require E and nu as primary inputs; G, K, lambda and M are derived automatically.

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