Calculate gear tooth bending stress σ = F_t/(b × m × Y) where Y = Lewis form factor, m = module, b = face width (8–16× module). Lewis form factor Y increases with number of teeth.
2D stress state at a point. All stresses in MPa.
Enter the values for the patient or scenario you are assessing. Calculate gear tooth bending stress σ = F_t/(b × m × Y) where Y = Lewis form factor, m = module, b = face width (8–16× module). Lewis form factor Y increases with number of teeth. Use the gear lewis stress result to inform your clinical assessment.