Analysis of Hybird III Lower Leg Instrumetation and an Associated InjuryCriterion

摘要

The report describes a series of static and dynamic tests which were conducted onthe Hybrid III lower leg instrumentation. The tests were conducted to determine the accuracy of the lower leg instrumentation measurements, the ability to calculate a maximum bending moment, and the feasibility of conducting a single inpact lower leg calibration. An analysis of the bending moment distribution in the lower leg for several differnet load conditions showed that a proposed maximum calculated bending moment equation did not accurately predict the maximum bending moment for loadings possible in automotive crash environments. Lower leg measurements of Y-moments and Y-shears were found to be accurate and repeatable for the static conditions. Measurements by the knee clevis force tranducers, however, were neither accurate nor repeatable. The accuracy of Z-force and X-moment measurements was not assessed in this testing, however, neither exhibited intolerable sensitivity to cross axis loads. The feasibility of a dynamic lower leg calibration procedure was demonstrated, although response corridors were not established.