2322 Loosening of Wheel Nut due to Rotating-Continuous Transverse Force

Abstract

Loosening of the wheel nuts may be the cause of accidents where the wheel falls off while the automobile is running. When the transverse force of wheel bolts exceeds a certain proportion of the bolt shaft force, the wheel nut begins to loosen. The authors examined, in the previous report, the proportion of the transverse force to the bolt shaft force in the case that the transverse force acts rotating and continuous. In this report, the proportion of the forces where the wheel nut begins to loosen is further examined. In the results it is clear that, the wheel nut begins to loosen by smaller proportion of the transverse force due to rotating-continuous transverse force than the proportion due to straight-repetitive transverse force.