Failure Mode Analysis of Composite Leaf Springs Under Dynamic Loading Conditions

Abstract

This research delineates the typical configuration of the longitudinal Composite Leaf Springs (CLS) 
and the stress experienced by its various components. When analyzed with force evaluation, many failure 
modes may manifest in the central and terminal sections of the CLS. Attention must be directed towards the 
stress accumulation in the clamping region near the center of the leaf spring, resulting from U-bolt pre
tightening. At the terminus of the CLS, sufficient lengths between bolt holes and edges must be maintained, and 
consideration should be given to the concentrated stress induced by the bolt. In the spring layout, the static 
rigidity of the CLS may be suitably augmented to guarantee that the suspension has enough offset frequencies. 
Simultaneously, it is essential to consider the resin’s glass transition temperature (Tg), which is recommended 
to exceed 80 °C.