Stress and Strain
Description
Precision:
Young's modulus
E
Pa
Poisson's ratio
ν
Shear modulus
G
Pa
Bulk modulus
K
Pa
Stresses (Pa)
σ
xx
σ
yy
σ
zz
τ
yz
τ
zx
τ
xy
Strains
ε
xx
ε
yy
ε
zz
γ
yz
γ
zx
γ
xy
Note that, in the commonest engineering notation, shear strain γ
ij
=2ε
ij
.