TourTourHERTZIAN LINE CONTACT

 E1 GPa v1 database material properties>>
 E2 GPa v2 database material properties>>
 R1 mm R2 mm (see note1)
 Calculate the contact pressure and size with prescribed load
 F/L N/mm
 
 E' GPa R' mm
 b 10-3 m
 pm GPa pmax GPa
 Calculate the load with prescribed contact pressure
 pmax MPa  (pmax=4/π pm)
 
 E' GPa R' mm
 b 10-3 m
 pm MPa F/L N/mm
1) In deriving the effective contact radius it is assumed that the radii near x=0 can be
 approximated by a parabolic function. With high conformity (b>>) this is not the
 case and the calculation becomes inaccurate.
 Symbols
 Ei modulus of elasticity [GPa]
 vi Poisson's ratio [-]
 E' effective modulus of elasticity [GPa]
 Ri radius [m]
 R' projected radius [m]
 Rp 0.2% Yield strength [MPa]
 b semi contact width [m]
 F/L load per unit length [N/mm]
 pm mean contact pressure [GPa]
 pmax maximal contact pressure [GPa]
 F normal load  [N]
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