HOOKE'S LAW FOR GENERAL STRESS  STRAIN CALCULATION
Hooke's law
stressstrain calculation tool was developed to calculate stressstrain relations
for a homogeneous isotropic material under most general stress/strain conditions.
If strains on a structure are measured in elastic range, stresses can be
calculated from these results with the usage of Hooke's law strain  stress
calculator.
The formulas used for the calculations are given in the "List of Equations"
section.
Calculator:
Note: Use dot "." as decimal separator.
Definitions:
Homogeneous Material: Material which has
got same material properties at all of its points.
Hooke's Law: The relation in which the stress σ is directly proportional to the strain ε. (σ=E ε). Hooke’s law is also valid for shear stress and strain in the linear elastic range (τ=Gγ)
Isotropic Material: Material in
which strength, elastic modulus and thermal conductivity properties are independent from the choice of coordinate system.
Modulus of elasticity (Young’s modulus): The rate of change of unit tensile or compressive stress with respect to unit tensile or compressive strain for the condition of uniaxial stress within the proportional limit. Typical values: Aluminum: 69 GPa, Steel: 200GPa.
Modulus of rigidity (modulus of elasticity in shear): The rate of change of unit shear stress with respect to unit shear strain for the condition of pure shear within the proportional limit. Typical values Aluminum 6061T6: 24 GPa, Structural Steel: 79.3 GPa.
Poisson’s ratio: The ratio of lateral unit strain to longitudinal unit strain under the condition of uniform and uniaxial longitudinal stress within the proportional limit.
List of Equations:
Parameter 
Symbol 
Formula 
Normal strain

ε_{x} 
(σ_{x}/Evσ_{y}/Evσ_{z}/E) 
Normal strain 
ε_{y} 
(σ_{y}/Evσ_{z}/Evσ_{x}/E) 
Normal strain 
ε_{z} 
(σ_{z}/Evσ_{x}/Evσ_{y}/E) 
Shear strain 
γ_{xy} 
τ_{xy}/G 
Shear strain 
γ_{yz} 
τ_{yz}/G 
Shear strain 
γ_{zx} 
τ_{zx}/G 
Modulus of rigidity 
G 
E/(2(1+v)) 
Reference: