 a) Bifurcation diagrams for non-wear; b) Bifurcation diagrams for a Wears1,max= 0.1 mm,  c) Bifurcation diagrams for a Wears1,max= 1 mm. x-coordinate is non-dimonsional  meshing frequency, y-coordinate is the non-dimonsional tooth deflection for meshing pair Ps1a1