The basic principle of helicopter flight sustenance relies on the rotation of the rotor, powered by the engine. These two essential components must be reliable, efficient, robust and lightweight, as their performance is intrinsically linked to the potential propagation of cracks within the material used. Wear, defined as the progressive deterioration of a solid surface due to mechanical contact, affects both the turboshaft and the rotor blades, altering their sections and leading to power loss. This wear can significantly reduce helicopter flight time by necessitating earlier and more stringent maintenance inspections. This thesis focuses on developing an optimized numerical model to study the behavior of erosion in composite components caused by multiple particle impingement, specifically focusing on the interaction between sand and blades.