Iliac wing fracture from lap belt loading
Typ
Examensarbete för masterexamen
Master's Thesis
Master's Thesis
Program
Applied mechanics (MPAME), MSc
Publicerad
2024
Författare
Bhat, Shreeraksha Umapathi
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Autonomous cars are expected to increase in the near future and one of the features
of those cars is to ride reclined as the driving task is managed by the vehicle. In
the reclined posture the occupant will have a more horizontal torso position. With
the current 3- point seatbelt it is more difficult to control torso body motion in
reclined postures compared to upright postures and the risk of submarining may
also increase. Submarining is an event where the pelvis slips under the lap belt
and loads the abdomen instead of the pelvis. There are different techniques to avoid
submarining and one of them is to increase the pre-tension force in the lap belt. This
avoids the risk of submarining but instead, the risk of iliac wing fracture increases
due to the higher pelvis load. Recently experiments on isolated iliac wings have
been performed,with the intention to find the fracture load. In this thesis, these
experiments were recreated in a simulation environment and with those simulation
results, the injury risk functions are generated to estimate the probability of the
iliac wing fracture. A conclusive single injury risk function suitable for practical
application could not be determined.
Beskrivning
Ämne/nyckelord
Submarining , pelvis injury , iliac wing fracture , injury risk function