طراحي و ساخت فنر شمشي كامپوزيتي

Design and Manufacture of a Composite Leaf Spring

With the aim of reducing the weight of vehicle and energy consumption, manufacture of composite leaf spring, containing continuous fibers in resin matrix, is under consideration. In this research, a composite leaf spring suitable for Nissan Patrol vehicle was designed and manufactured. In the first step, dimensional optimization was carried out in regards to constant bending stress and cross-sectional area throughout the length of the spring. Then, the composite leaf spring was made from glass fibers and epoxy resin, by hand lay up method. Comparing the composite leaf spring with the similar metallic type based on standard static test and field test, shows some advantages such as; weight reduction of 79.5%, competitive performance and passenger ride comfort.