The objective of the present study was to analyze the effect of angular kinematics on head injury in pedestrian head-to-windshield impacts. Three cases of pedestrian head impacts were simulated with FE head and windshieldmodels. The initial impact conditions were obtained from pedestrian accident reconstructions carried out using multi-body pedestrian and car models. The results from the FE head model were compared with injuries reported in the database. Maximum principal strain was chosen as the injury indicator. After successful head injury predictions, the initial velocities were varied and as a result different peak angular velocities and accelerationswere simulated. The results showed that increased peak change in angular velocity caused higher maximal principal strain in the brain and in consequence higher probability of Diffuse Axonal Injury (DAB. and Acute SubduralHaematoma (ASDH). A dramatic, three-fold increase in the strain levels inthe brain was found when doubling the impact velocity. This paper presents work performed within the framework of a European Commission 6th framework project (APROSYS). For the covering abstract see ITRD E141762.
Samenvatting