@ahmedhussain18 put together this beauty of a simulation project:
An impact at 25 km/h of a skull once without and once with protection via a helmet is simulated. A nonlinear dynamic analysis analysis was used to determine the acceleration and stresses acting on the skull during the impact. Ahmed found out that the acceleration is reduced by 35% and the stress by 60%. So not only interesting from an engineering point of view but probably also from a bicycle rider's!
You can find the complete project description in the library or import it directly via this link: