Modeling of power losses in poly-V belt transmissions: hysteresis phenomena (standard analysis)

A simulation software is being developed for predicting the power losses in poly-V belt transmissions. For this purpose, some theoretical models have been implemented considering different types of power losses taking place in a Front Engine Accessory Drive (FEAD). Even though these power losses come from different phenomena, the analysis in this paper is focused on the elastomeric belt hysteresis losses due to dynamic bending, stretching, shear, flank and radial compression of the belt rubber. Experimental tests are performed in order to determine the intrinsic loss modulus of the belt elastomeric constituent causing the loss of energy. This study permits determining a hysteresis power loss map of a belt transmission.