Sensitivity analysis of dog clutch shiftability to system parameters

Abstract

Previous studies introduced the shiftability condition for successful gearshift, based on the dog clutch kinematics model containing several parameters. This study analyzes the effect of these parameters on the dog clutch shiftability. A method to study the impact of parameters is proposed. The influence of chosen parameter domains is shown. Their influence is recognized based on the shiftability map and the engagement probability. The initial relative position showed a periodic effect within one pitch region. The teeth number, axial speed, and the backlash positively affected the engagement probability, while the mismatch speed and the overlap distance showed a negative effect. The analysis showed lower limit values for the axial speed and the backlash but higher limit values for the mismatch speed and the overlap distance.

Dynamical model for dog clutch shiftability

“…As Δt increases due to higher x fed , the chances for successful gearshift decrease. This finding aligns with our previous results in [29]. Figure 10a provides the shiftability map at various backlash values.…”

“…The presence of many parameters can pose challenges for conducting a parameter study. In [29], we proposed a parametric study method to study the parameters effect based on the kinematical shiftability condition. As summarized below, the same method is used here but based on the dynamical shiftability condition.…”

“…Additionally, we visually presented the successful gearshift area through the developed shiftability map. In another study [29], we created a method to calculate shifting probability and developed a parametric study method to explore the sensitivity of the shiftability map and engagement probability to system parameters. Our analysis indicated that the number of teeth and tangential backlash positively affect engagement probability, while initial mismatch speed and overlap distance have a negative impact.…”

“…Here, the mismatch and axial speeds are considered not constant. Moreover, we utilize the dynamical shiftability condition and the parametric study method developed in [29] to investigate the system sensitivity for some selected parameters and their effect on dog clutch shiftability.…”