TourTourCalculator for a cross spring hinges
 Plate spring Length L   10-3 m
 Plate spring thickness t   10-3 m
 Hinge thickness w   10-3 m
 Young's modulus E   109 Pa
 Poisson constant v  
 Ratio λ  
 Modulus of elasticity for plane strain E   109 Pa
 Torsional stiffness kt   10-3 Nm/rad
Note that the maximum value of stresses in the monolithic structure strongly depend on the rounding's in the cross section.