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Acetabulum Iliac Force

Overview​

The acetabulum and iliac forces are measures of the SID-IIs and WorldSID test dummies that are compared injury assessment references values (IARV). These IARVs are determined for side impacts using Zhu et al. [1] and Bouquet et al. [2] that is outlined in the side impact guidelines [3].

Inputs​

Signals:​

  • Pelvis Iliac Force (Y)
  • Pelvis Acetabulum Force (Y)

Calculation​

  1. Filter the acetabulum and iliac signals (CFC = 600)
  2. Find the maximum of each signal

SID_II_BioSid_Acetabulum

BioSID/SID-IIs Acetabulum Iliac [3]

Injury Criteria​

The acetabulum iliac force injury criteria is 5525 N for the SID-II. [4]

NCAP Combined Injury Rating​

The acetabulum iliac metric is used in the NCAP side pole and side MDB tests for the SID-II dummy.

Pacetabulum−iliac(3+)=11+e(6.3055−0.00094∗F)(Equation 1)\tag{Equation 1}P_{acetabulum-iliac} (3+) = \frac{1}{1+e^{(6.3055-0.00094*F)}}
Femur Force
NCAP Probability of Injury for Acetabulum Iliac Force for SID-II[5]

References​

[1] Zhu, J. Y., J. M. Cavanaugh, and A. I. King. Pelvic biomechanical response and padding benefits in side impact based on a cadaveric test series. No. 933128. SAE Technical Paper, 1993.

[2] Bouquet, Robert, et al. "Pelvis human response to lateral impact." Proceedings of the 16th International Technical Conference on the Enhanced Safety of Vehicles, Windsor, ON, Canada. Vol. 31. 1998.

[3] "Sign Convention for Vehicle Crash Testing" No. J1733-2018-11 SAE International. SAE Technical Report, 2018.

[4] Federal Motor Vehicle Safety Standard 49 CFR § 571.214; Side impact protection.

[5] National Highway Traffic Safety Administration. Final Rule; Response to Petitions for Reconsideration: Federal Motor Vehicle Safety Standards; Head Restraints. Docket No. NHTSA-2006-26555-0120, U.S. Department of Transportation, 2006.