Design of a side impact sled for use in multiple angle impacts
Creators:Bonner, Tara Francesca
Advisor:Bolte, John H. IV
MetadataShow full item record
Publisher:The Ohio State University
Series/Report no.:The Ohio State University. Department of Mechanical Engineering Honors Theses; 2008
A vast amount of research has been conducted on blunt impacts on the thorax from the lateral direction; however, significantly less has been conducted from oblique directions. Since most vehicular impacts are not directed in the purely lateral direction, there is a desire to better understand how the thoracic response differs between these two loading conditions. The Ohio State University Injury Biomechanics Research Laboratory (IBRL) has been testing thoracic response from impacts in both lateral and oblique directions on fresh post-mortem human subjects (PMHS). Pendulum tests have been used to impact the thorax from oblique directions. While pendulum tests can form accurate results, sled tests are much more life-like and provide a closer representation of a side impact crash. While there is already a side-impact sled that can simulate lateral impact crashes, there isn’t one that can simulate oblique to lateral crashes. The objective of this research is to design a sled that can simulate side impact crashes at multiple angles. 20 different sled models and sled tests were designed and simulated using a MADYMO simulation program. The T1 and T12 accelerometer data in the longitudinal and lateral directions were extracted from the simulations and compared to accelerometer data extracted from an ATD in an oblique pole impact test. Through correlating the simulations with the crash test, it was discovered that the best sled design involved a buck positioned laterally to the ATD’s shoulders and accelerating into the dummy at an angle of 10˚ anterior to lateral.
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