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- Abteilung Fahrzeugtechnik (162) (entfernen)
In the European Project FIMCAR, a proposal for a frontal impact test configuration was developed which included an additional full width deformable barrier (FWDB) test. Motivation for the deformable element was partly to measure structural forces as well as to produce a severe crash pulse different from that in the offset test. The objective of this study was to analyze the safety performance of vehicles in the full width rigid barrier test (FWRB) and in the full width deformable barrier test (FWDB). In total, 12 vehicles were crashed in both configurations. Comparison of these tests to real world accident data was used to identify the crash barrier most representative of real world crashes. For all vehicles, the airbag visible times were later in the FWDB configuration. This was attributed to the attenuation of the initial acceleration peak, observed in FWRB tests, by the addition of the deformable element. These findings were in alignment with airbag triggering times seen in real world crash data. Also, the dummy loadings were slightly worse in FWDB compared to FWRB tests, which is possibly linked to the airbag firing and a more realistic loading of the vehicle crash structures in the FWDB configuration. Evaluations of the lower extremities have shown a general increasing of the tibia index with the crash pulse severity.
The objective was to develop and validate a crash trolley (reference vehicle) equipped with a compartment and a full restraint system for driver and front seat passenger which can be used in full scale crash testing. Furthermore, the crash trolley should have a suspension to show rotation and nick effects similar to real vehicles. Within the development phase the reference vehicle was build based on a European family car. Special attention was needed to provide appropriate strength to the trolley and its suspension. The reference vehicle is equipped with a restraint system consisting of airbags, pedals, seats, dashboard, and windscreen. On the front of the vehicle different crash barriers can be installed to provide miscellaneous deceleration pulses. For the validation phase a series of low and high speed crash tests with HIII dummies were conducted and compared with full scale tests. For the comparison deceleration pulse, dummy numbers and vehicle movement were analyzed. Validation tests with velocities up to 60 km/h showed promising results. The compartment and the suspension systems stayed stable. Rotation effects were comparable with full scale car crash tests. The airbags and seat belt system worked reasonable. The acceleration pulse compared to an Euro NCAP test had a similar characteristic but was in general slightly lower. After the successful validation the reference vehicle is already in use in different studies in the field of vehicle safety research at BASt.