Development and Application of an Enhanced SID-IIs Dummy for Analyzing Side Impact Kinematics

Due to the relative high speed and short distance between the door and occupant, side impact presents a challenging task when analyzing the input force from the door to the occupant.

The new FMVSS214 Final Rule in 2007 and the new NCAP in 2008 mandated the use of a SID-IIs in the oblique pole impact test and in the rear seat during an MDB side impact test. Therefore, a high-precision measurement and calculation of the three-dimensional dummy kinematics, as well as the interaction of force inside the dummy (internal force) and force exerted from outside the dummy (external force) will help provide efficient evaluation of design requirements for the door trim and supplemental restraint systems that meet legally mandated requirements.

This paper demonstrates that the SID-IIs three-dimensional kinematics and external forces can be calculated with a high degree of precision through the addition of angular rate sensors and force transducers, and describes the application of the technique to vehicle development.