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Home » Effect of Extended Tooth Contact on the Modeling of Spur Gear Transmissions

Effect of Extended Tooth Contact on the Modeling of Spur Gear Transmissions

July 1, 1994
In some gear dynamic models, the effect of tooth flexibility is ignored when the model determines which pairs of teeth are in contact. Deflection of loaded teeth is not introduced until the equations of motion are solved. This means the zone of tooth contact and average tooth meshing stiffness are underestimated, and the individual tooth load is overstated, especially for heavily loaded gears. This article compares the static transmission error and dynamic load of heavily loaded, low-contact-ratio spur gears when the effect of tooth flexibility has been considered and when it has been ignored. Neglecting the effect yields an underestimate of resonance speeds and an overestimate of the dynamic load.
Design Inspection Contact Ratio Corrections Dynamic Load Load Ratio Software Tooth Load Transmission Error Technical Spur Gears
KEYWORDS deflection dynamic load LCR low contact ratio spur gears tooth load transmission error
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