Occupant Risk Analysis Based On Vehicle-guardrail Collision

With the growing car ownership in China, the incidence of traffic accidents also increased year by year. Among them, the vehicle and the guardrail scratch, traffic fatalities caused by collisions accounted for about 30 percent of all traffic fatalities. As the vehicle-guardrail collisions tend to be the safety of the occupants of a serious threat, and therefore, the vehicle- guardrail collisions in occupant safety issue has important significance.This paper first vehicle- guardrail occupants during a collision mechanism of injury and characterization parameters were studied, and then the occupant injury criteria were analyzed, the final selection of the indirect assessment system as herein occupant risk evaluation criteria. Upon completion of the theoretical part of the comb, this study was designed vehicles- the real vehicle collision test methods and calibration techniques dummy fence, and the fence in determining the real car crash test case fence. By dummy key parts of the sensor, can be collected to the occupant’s head, neck, chest, and legs of the acceleration, velocity and force data, and through the installation of two sets of three-axis acceleration sensor on the experimental vehicle and combining herein gravity acceleration correction algorithm may be used EVAluation PC / NCAP software respectively crew hurt the value of each part of the vehicle center of gravity of the curve and 10 ms average acceleration curves, based on these two sets of data, the paper further to various parts of the occupant(head, chest, legs) suffered injuries and 10 ms average acceleration of the vehicle center of gravity relations were discussed. Data analysis showed that changes in the vehicle’s center of gravity 10 ms average acceleration greatest impact on occupant head injury and its impact presents a strong linear relationship.