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Abdomen Force

Description​

Abdomen force is defined for the EuroSID anthropomorphic test device (ATD), which incorporates three uniaxial force transducers in the Y-axis direction within the abdominal cavity. These transducers quantify lateral abdominal loading during side impacts and support evaluation of abdominal injury risk [1].

This metric does not have a separate button. WebSAT reports abdomen force and its injury risk when you select Vehicle Analysis > NCAP for a supported side moving-deformable-barrier test.

Measurements used by WebSAT​

  • Abdomen 1 Force, Abdomen 2 Force, and Abdomen 3 Force (Y) in the EuroSID Dummy

How WebSAT processes the data​

  1. Filter all signals (CFC 600)
  2. Sum the 3 force signals
  3. Calculate the peak of the sum of abdomen forces and corresponding time
  4. Use the peak force to calculate the NCAP AIS 3+ abdominal-injury risk.

NCAP injury risk​

The abdomen force metric is used for the driver in the NCAP side moving-deformable-barrier test. NHTSA defines the AIS 3+ abdominal-injury risk relationship as follows [2]:

Pabdomenforce(3+)=11+e(6.04044−0.002133∗F)(Equation 1)P_{abdomen force} (3+) = \tag{Equation 1}\frac{1}{1+e^{(6.04044-0.002133*F)}}
Curve showing the probability of an AIS 3+ abdominal injury rising as abdomen force increases
NCAP probability of AIS 3+ abdominal injury as a function of abdomen force [2]

References​

[1] van Ratingen, Michiel. Development and evaluation of the ES-2 side impact dummy. No. 2001-06-0050. SAE Technical Paper, 2001.

[2] National Highway Traffic Safety Administration. New Car Assessment Program; Suggested Approaches for Enhancements. 73 FR 40016, July 11, 2008, Appendix D.