A Fresh Perspective on Hypoid Duty Cycle Severity
2021-01-0707
04/06/2021
- Event
- Content
- A new method is demonstrated for rating the “severity” of a hypoid gear set duty cycle (revolutions at torque) using the intercept of T-N curve to support gearset selection and sizing decision across vehicle programs. Historically, it has been customary to compute a cumulative damage (using Miner's Rule) for a rotating component duty cycle given a T-N curve slope and intercept for the component and failure mode of interest. The slope and intercept of a T-N curve is often proprietary to the axle manufacturer and are not published. Therefore, for upfront sizing and selection purposes representative T-N properties are used to assess relative component duty cycle severity via cumulative damage (non-dimensional quantity). A similar duty cycle severity rating can also be achieved by computing the intercept of the T-N curve instead of cumulative damage, which is the focus of this study. In this case, the T-N intercept for a given vehicle duty cycle provides a duty cycle severity rating for that vehicle program and this rating can be generated for duty cycles across all programs to provide a convenient means to match a duty cycle with a hypoid gear set size.
- Pages
- 6
- Citation
- Jonnalagadda, A., Monroe, R., Schrand, V., and Ramakrishnan, V., "A Fresh Perspective on Hypoid Duty Cycle Severity," SAE Technical Paper 2021-01-0707, 2021, https://doi.org/10.4271/2021-01-0707.