Browse Publications Technical Papers 2010-01-1023
2010-04-12

Computational Investigation of the Effects of Driver and Vehicle Interior Factors on the Risk of Knee-Thigh-Hip Injuries in Frontal Crashes 2010-01-1023

The effects of seatbelt use, muscle tension, lower-extremity posture, driver fore-aft seat position, seat height, and seat angle on the likelihood of knee, thigh, and hip (KTH) injuries during knee-to-knee-bolster impacts in frontal crashes were studied using a finite element (FE) human model. A midsize male whole-body FE model, with a previously validated knee-impact response, was further validated in this study against whole-body responses from two sets of cadaver sled tests. This human model was integrated with vehicle instrument panel, seat, and restraint-system models. An FMVSS 208 crash pulse of a passenger car was used to evaluate the effects of the aforementioned factors on the risk of KTH injuries. Simulation results indicated that seatbelts significantly reduced peak forces generated at the knee, in the thigh, and at the hip, and thereby reduced the risk of KTH injuries. Lower-extremity muscle tension significantly increased compressive force in the femur but not at the knee or hip. Abducting the hip (i.e., increasing thigh splay) significantly decreased peak forces at the knee, thigh, and hip relative to a neutral or adducted posture. More rearward seating positions produced significantly higher forces at the knee and hip for unbelted drivers, but significantly lower peak forces at the knee and hip for belt-restrained drivers. More inclined seat angles generally reduced peak force at all locations in the KTH, but the reductions are not statistically significant.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

A Crash Simulation of Instrument Panel Knee Bolster Using Hybrid III Dummy Lower Torso

951067

View Details

TECHNICAL PAPER

Development of Injury Criteria for Human Surrogates to Address Current Trends in Knee-to-Instrument Panel Injuries

983146

View Details

TECHNICAL PAPER

Safety Performance of a Rear Seat Belt System with Optimized Seat Cushion Design

810796

View Details

X