The power transmission ability of a belt for high power transmission is predicted.
A power transmission ability curve of the belt that does not depend on the layout
relative to the pulleys is found, thereby to facilitate evaluation of the belt
power transmission ability and designing of the transmission condition of a belt
drive system. To this end, for the high power transmission belt, a relational expression
between the WD factor which is the pressing force against pulleys per belt unit
length and the ST factor which is the effective tension of the belt per unit contact
length to the pulleys is found. Based on the relational expression, evaluation
of the power transmission ability of the belt is conducted. The WD-ST relational
expression becomes a power transmission ability curve which is inherent to the
belt B but independent of the layout relative to the pulleys, therefore facilitating
evaluation of the belt power transmission ability and designing of the transmission
condition of the belt drive system.