• General Equations
       
Input Field(s)    
Tensile/Compressive Force (Fa) lbf
Area of cross-section (A) in^2
Shear Force (Fs) lbf
Original Length (Lo) in
Deformation (dL) in
Shear Strain (y)  
       
Output Field(s)      
Normal Stress (Sn) psi
Shear Stress (St) psi
Unit Strain (e)  
Modulus of Elasticity (E) psi
Modulus of Rigidity (G) psi
Poissons Ratio  

  • Calculation Guide
  • Overview
    • Gerneral relations for stress-strain calculations
  • Equations
    • Sn = Fa/A
    • St = Fs/A
    • e = dL/Lo
    • E = Sn/e
    • G = St/y
    • v = E/2G - 1
    • dl = (F L)/(A E)
    • --------------------------------------------------
    • Sn - Normal stress (psi)
    • St - Shear stress (psi)
    • e - Strain
    • dl - Change in length (deformation) (in)
    • Lo - Original Length (in)
    • E - Modulus of Elasticity (psi)
    • G - Modulus of Rigidity (psi)
    • v - Poissons Ratio
  • Assumptions
    • Stresses considered are pure unifrom stresses
  • Reference
    • Standard handbook of machine design, Shigley, J; Mischke, C; Brown, T
  • Unit Conversion Tool