Calculations of cylindrical tooth wheels in view of iso 6336 standard and recommendations of classification society CN 41.2-DNV-GL

In this study there are presented ISO 6336 standard and recommendations of classification society CN 41.2-DNVGL regarding calculations of cylindrical toothed gears used in all oceanic ships and oil rigs. The calculation method presented in this study allows to perform calculations of the safety coefficient for stress at the tooth base SF and for contact stress SH. The calculations have been performed for gears with different geometric parameters and for three load spectra. The obtained results enable to determine the values of relative differences in δF and δH, which are: δF = 16,7% to 42,8% and δH = 10,4% to 22,6%.