Dynamic analysis of spur gear with backlash using ADAMS

Gear tooth profile can deviate from its initial design shape and size as a result of increasing service time under time-varying load, introducing external agents like debris, overheating due to friction, wear, and in generally due to other nonlinear factors such as backlash. As a result, the dynamics of the gear will also vary depending on the resulting gear tooth profile. In this study, the worn-out gear tooth is modelled as a backlash by assuming a uniformly distributed worn out surface and the effect on the dynamic performance is investigated. By changing the amount of backlash of the gear tooth from 0 mm to 1 mm by 0.2 mm increment, the gear is modelled and analysed for three loading cases using MSC ADAMS software. This paper discusses the effect of backlash or uniformly worn out spur gear tooth faces on the dynamics specifically the contact and angular accelerations of the gear.publishedVersio

Contact temperature analysis of the classical Geneva mechanism through numerical methods

In this study, the flash temperature of the classical Geneva mechanism has been studied using the numer- ical method. An excessive sliding motion between the wheel and pin leads to the generation of heat at the contact surfaces, which raises the surface temperature of the two contacting bodies. The flash tempera- ture has been anticipated for different loading cases and coefficients of friction. The analytical Blok equa- tion results are compared with the finite element results, and the results are satisfactory for maximum temperature. Based on the simulation results, the maximum contact temperature occurred in the driving crankpin within 10-15° and 70–75° of the angular position, and as the load increased the contact temper- ature also increases. In addition, the angular velocity increment produced higher temperatures than the torque load increments.publishedVersio