How to Calculate Shear Modulus
What is Shear Modulus?
Shear modulus (G) measures resistance to shear deformation: G = shear stress / shear strain; related to stiffness.
Formula
Calculate G = τ/γ
- G
- τ/γ — τ/γ
Step-by-Step Guide
- 1Input shear stress and shear strain or material properties
- 2Calculate G = τ/γ
- 3Results show shear stiffness
Worked Examples
Input
Steel: G ≈ 80 GPa
Result
Rubber: G ≈ 1 MPa (much softer in shear)
Common Mistakes to Avoid
- ✕Using wrong stress/strain definitions (must be shear)
- ✕Confusing with bending stiffness
Frequently Asked Questions
How do Young's and shear moduli relate?
G = E / (2(1+ν)) using Poisson's ratio.
Ready to calculate? Try the free Shear Modulus Calculator
Try it yourself →