Biodynamic simulations of helmet mass and center-of-gravity effects

Andris Freivalds, Daniel S. McCauley

Research output: Contribution to journalArticle

Abstract

The addition of extraneous devices (such as night vision goggles) to the helmet assembly has created a new safety hazard for the aviator. The additional mass and misplaced center of gravity (cg) associated with these devices poses the threat of neck injury during ejection, windblast, parachute opening, and other high-G maneuvers. Computer biodynamic simulations using the Articulated Total Body model shows that additional mass has very little effect on head injury scales, head/neck torques, and flexion angles. On the other hand, any combination of cg offset or initial head rest position that causes the head/helmet assembly cg to be anterior of the head/neck joint results in significant head rotation, head torques, and head injury scale values.

Original languageEnglish (US)
Pages (from-to)141-148
Number of pages8
JournalJournal of Safety Research
Volume21
Issue number4
DOIs
StatePublished - Jan 1 1990

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Gravitation
Torque
Aviators
Goggles
Parachutes
Hazards
Computer simulation

All Science Journal Classification (ASJC) codes

  • Safety, Risk, Reliability and Quality

Cite this

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title = "Biodynamic simulations of helmet mass and center-of-gravity effects",
abstract = "The addition of extraneous devices (such as night vision goggles) to the helmet assembly has created a new safety hazard for the aviator. The additional mass and misplaced center of gravity (cg) associated with these devices poses the threat of neck injury during ejection, windblast, parachute opening, and other high-G maneuvers. Computer biodynamic simulations using the Articulated Total Body model shows that additional mass has very little effect on head injury scales, head/neck torques, and flexion angles. On the other hand, any combination of cg offset or initial head rest position that causes the head/helmet assembly cg to be anterior of the head/neck joint results in significant head rotation, head torques, and head injury scale values.",
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Biodynamic simulations of helmet mass and center-of-gravity effects. / Freivalds, Andris; McCauley, Daniel S.

In: Journal of Safety Research, Vol. 21, No. 4, 01.01.1990, p. 141-148.

Research output: Contribution to journalArticle

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T1 - Biodynamic simulations of helmet mass and center-of-gravity effects

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