Compute shear strain γ = τ/G from shear stress and shear modulus for shear deformation and torsion analysis.
输入剪应力 τ 与剪切模量 G,求剪应变。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Shear form of Hooke law | gamma = tau / G, where tau is the shear stress and G the shear modulus | Timoshenko SP, Gere JM, Mechanics of Materials |
| Definition of shear strain | gamma is the change in angle between two originally perpendicular line elements, in radians | ISO 80000-4:2019, Quantities and units - Part 4: Mechanics |
| Small-deformation assumption | tau = G · gamma holds only under small deformations and linear elasticity | Timoshenko SP, Gere JM, Mechanics of Materials |
| Relation to normal strain | In pure shear the principal strains are approximately gamma/2 | Roark RJ, Young WC, Formulas for Stress and Strain |