Evaluation of small female knee-thigh-hip response in frontal collisions

Carpenter, Randolff; Forman, Jason

Affiliations

Abstract

Four female PMHS were tested under bilateral knee impact conditions using a pneumatically driven ram. 10 tests were performed in a hierarchal fashion, varying the velocities at impact and the coupled mass of the KTH system. Test conditions included whole body (WB), removal of thigh flesh (TFR), the addition of implantable femur load cells (TFR+LC), and the removal of the torso (ToR). One goal of this study was to provide preliminary evaluations on the effect of mass coupling on the knee-thigh-hip (KTH) response of small females in simulated frontal collisions. This included identifying the sensitivity of loading at the knee and femur as a function of impact velocity and mass coupled to the KTH complex. Acceleration traces at the femurs, pelvis and L2 were also analyzed for differences across test conditions. Knee loading results varied significantly as a function of the velocities tested. Femur forces measured as a percentage of the applied force during testing were significantly different between TFR+LC and ToR conditions suggesting that the effective coupled mass of the torso has a noticeable effect on the force transferred along KTH in small females. This is the first step in the overarching goal of quantifying the KTH response for small females through the development of lumped parameter models.

Links

URL: https://ibrc.osu.edu/wp-content/uploads/2022/05/Carpenter-IBS-2022.pdf

Cited Works (7)

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