Evaluation of RADIOSS Human Model (HUMOS II) for Aircraft Side Facing Seats Applications
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Transcript of Evaluation of RADIOSS Human Model (HUMOS II) for Aircraft Side Facing Seats Applications
Innovation Intelligence®
Evaluation of RADIOSS Human Model
(HUMOS II) for Aircraft Side Facing Seats
applications
Anaïs GARO, PhD ; Franck NJILIE, PhD ; Martin Poupeney
Altair Development France
Copyright © 2012 Altair Engineering. Inc. Proprietary and Confidential. All rights reserved.
Introduction : Context
• Federal Aviation Administration (FAA) regulations
primarily focus on injury mitigation in frontal and
vertical ”survivable” impacts (Title 14 of the CFR
parts 25.562, 23.562, 27.562, 29.562)
• Necessity to provide similar protection to passenger
in side facing seat
• A Project was conducted by the FAA Civil Aerospace
Medical Institute (CAMI) to evaluate the suitability of
a side impact dummy, the ES2, in assessing injury
risk in a typical side facing seat configuration
• The purpose on this work was to evaluate RADIOSS
Human body model in similar test conditions
• HUMOS II might further be used to investigate injury
mechanism and develop adequate injury criteria for
aircraft side facing crash scenarios
Copyright © 2012 Altair Engineering. Inc. Proprietary and Confidential. All rights reserved.
RADIOSS HUMOS II (HUman MOdel for Safety) : Created for
automotive crash applications
Adaptation of the model seating posture for aerospace applications
RADIOSS HUMOS II AERO model
RADIOSS HUMOS II model
Sitting height
(mm)
Standing height
(mm)
Weight
(kg)
HUMOS subject 920 1730 77
50th Percentile
European male 915 1750 75.5
BCS
Rotate
Center of
rotation
Copyright © 2012 Altair Engineering. Inc. Proprietary and Confidential. All rights reserved.
RADIOSS HUMOS II model
Accelerometers : head, pelvis, upper and the lower spine
Rib deflection transducers
Force: lumbar and pubic
L4
L5
Joint
Disc
Copyright © 2012 Altair Engineering. Inc. Proprietary and Confidential. All rights reserved.
Load cases based on CAMI (Civil Aerospace Medical Institute) work
• Restraint system : Conventional three point belt
• 16 g, 44 ft/s, horizontal impact specified in 14 CFR part 25.562 (without yaw)
• Seats covered with foam cushion
Load cases : typical aircraft side facing scenarios
Close wall test Arm-rest test
Assessment of injury potential in aircraft side-facing seats using the ES2 anthropomorphic test dummy, DeWeese R. and Moorcroft D., 2007, FAA
Copyright © 2012 Altair Engineering. Inc. Proprietary and Confidential. All rights reserved.
Results and discussion : close wall
Kinematics and Accelerations
Copyright © 2012 Altair Engineering. Inc. Proprietary and Confidential. All rights reserved.
Fractures
Results and discussion : close wall
Copyright © 2012 Altair Engineering. Inc. Proprietary and Confidential. All rights reserved.
Results and discussion : close wall
Forces
Pubic Resultant force
Lower lumbar Fy
Copyright © 2012 Altair Engineering. Inc. Proprietary and Confidential. All rights reserved.
Rib deflection
→ Rib cage modeling
Results and discussion : close wall
Copyright © 2012 Altair Engineering. Inc. Proprietary and Confidential. All rights reserved.
Kinematics
Results and discussion : Arm rest
Copyright © 2012 Altair Engineering. Inc. Proprietary and Confidential. All rights reserved.
Acceleration
Forces
Results and discussion : Arm rest
Copyright © 2012 Altair Engineering. Inc. Proprietary and Confidential. All rights reserved.
Rib deflection
→ Kinematics differences
Results and discussion : Arm rest
Copyright © 2012 Altair Engineering. Inc. Proprietary and Confidential. All rights reserved.
Conclusion
RADIOSS HUMOS II aerospace model is updated and successfully
evaluated within aerospace context : forward and side facing test
configuration
The updated HUMOS II model allows to capture and predict potential
injuries ATDs such as ES 2 cannot highlight due to their stiffness
However, further validations are required using PMHS test data in
aerospace load cases