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Abdomen Deflection Rate

Overview​

Abdomen deflection rate refers to the speed at which the abdominal region of a crash test dummy deforms during loading.

Required Signals​

  • Rib Deflection, Chest Deflection, or Rib Abdomen Deflection (Y)

Calculation​

  1. Filter the deflection data (CFC = 180)
  2. Truncate signal to start at 0 seconds (if applicable)
  3. Differentiate to calculate deflection rate
  4. Calculate peak deflection rate and corresponding time
  5. Compare to IARV

Injury Criteria​

Abdomen deflection rate injury criteria [1].

ATDThorax Deflection Rate (m/s)Abdomen Deflection Rate (m/s)
SID - IIs8.38.3
BioSID8.38.3

References​

[1] Mertz, Harold J. "Anthropomorphic test devices." Accidental injury: Biomechanics and prevention. New York, NY: Springer New York, 1993. 66-84.