Abstract
The paper outlines an approximate analysis of the strength of wheel centers, particularly as applied to spoke wheels subjected to heavy lateral loads such as locomotive driving wheels. To generalize the work, the subject is extended to a study of other types of wheels with a view to approximating their strength characteristics. Inertia loadings and proportions of flywheels are considered briefly.
After a discussion of classification and loading, the author analyzes the characteristics of bending loadings and stresses, considering first the transmission of torque for wheels with heavy and with light rims, second, direct loading in the plane of the wheel, and third, lateral bending in wheel centers. The design of hubs subjected to a pressure fit is then analyzed, and the additional stresses in a locomotive driving wheel due to the offset load on the crank pin are considered. This is followed by a mathematical discussion of the effect of the shrinkage of tires on the compressive stresses in wheel centers. The counterbalance of locomotive wheel centers follows and the paper concludes with a consideration of inertia stresses and loadings of flywheels with special consideration of rotors for a. c. generators with rotating fields, and of the inertia proportions of flywheels.
