Full-scale crash test and FEM simulation of a crashworthy helicopter seat

HU Da-yong; ZHANG Xiang

Full-scale crash test and FEM simulation of a crashworthy helicopter seat

HU Da-yong^1,2, ,,
ZHANG Xiang³

1.
School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
2.
Airworthiness Technologies Research Center, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
3.
School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

基金项目: The National Natural Science Foundation of China(11032001)

计量
- 文章访问数: 1540
- HTML浏览量: 9
- PDF量: 458
- 被引次数: 0
出版历程
- 收稿日期: 2011-04-06
- 修回日期: 2011-09-14
- 刊出日期: 2012-02-28

Full-scale crash test and FEM simulation of a crashworthy helicopter seat

HU Da-yong^{1,2
, ,},
ZHANG Xiang³

1.
School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
2.
Airworthiness Technologies Research Center, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
3.
School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

Funds: The National Natural Science Foundation of China(11032001)

摘要

摘要: Crashworthy seat structure with considerable energy absorption capacity is a key component for aircraft to improve its crashworthiness and occupant survivability in emergencies.According to Federal Aviation Administration(FAA) regulations,seat performance must be certified by dynamic crash test which is quite expensive and time-consuming.For this reason,numerical simulation is a more efficient and economical approach to provide the possibility to assess seat performances and predict occupant responses.A numerical simulation of the crashworthy seat structure was presented and the results were also compared with the full-scale crash test data.In the numerical simulation,a full-scale three-dimensional finite element model of the seat/occupant structure was developed using a nonlinear and explicit dynamic finite element code LS-DYNA3D.Emphasis of the numerical simulation was on predicting the dynamic response of seat/occupant system,including the occupant motion which may lead to injuries,the occupant acceleration-time histories,and the energy absorbing behavior of the energy absorbers.The agreement between the simulation and the physical test suggestes that the developed numerical simulation can be a feasible substitute for the dynamic crash test.
- full-scale crash test /
- seat/occupant system /
- finite element model /
- energy absorption /
- crashworthiness
Abstract: Crashworthy seat structure with considerable energy absorption capacity is a key component for aircraft to improve its crashworthiness and occupant survivability in emergencies.According to Federal Aviation Administration(FAA) regulations,seat performance must be certified by dynamic crash test which is quite expensive and time-consuming.For this reason,numerical simulation is a more efficient and economical approach to provide the possibility to assess seat performances and predict occupant responses.A numerical simulation of the crashworthy seat structure was presented and the results were also compared with the full-scale crash test data.In the numerical simulation,a full-scale three-dimensional finite element model of the seat/occupant structure was developed using a nonlinear and explicit dynamic finite element code LS-DYNA3D.Emphasis of the numerical simulation was on predicting the dynamic response of seat/occupant system,including the occupant motion which may lead to injuries,the occupant acceleration-time histories,and the energy absorbing behavior of the energy absorbers.The agreement between the simulation and the physical test suggestes that the developed numerical simulation can be a feasible substitute for the dynamic crash test.
- full-scale crash test /
- seat/occupant system /
- finite element model /
- energy absorption /
- crashworthiness

HTML

参考文献(14)

[1]	Bisagni C.Crashworthiness of helicopter subfloor structures[J].International Journal of Impact Engineering,2002,27(10):1067-1082.
[2]	Hughes K,Campbell J,Vignjevic R.Application of the finite element method to predict the crashworthy response of a metallic helicopter under floor structure onto water[J].International Journal of Impact Engineering,2008,35(5):347-362.
[3]	Vignjevic R,Meo M.A new concept for a helicopter sub-floor structure crashworthy in impacts on water and rigid surfaces[J].International Journal of Crashworthiness 2002,7(3):321-330.
[4]	Airoldi A,Janszen G.A design solution for a crashworthy landing gear with a new triggering mechanism for the plastic collapse of metallic tubes[J].Aerospace Science and Technology,2005,9(5):445-455.
[5]	Desjardins S P.The evolution of energy absorption systems for crashworthy helicopter seats //AHS 59th Annual Forum Proceedings.Phoenix,AZ,USA:AHS,2003:5-20.
[6]	Lee Y S,Lee J H,Han K H,et al.A study on the modeling and analysis of a helicopter’s occupant seat belt for crashworthiness[J].Journal of Mechanical Science and Technology,2009,23(4):1027-1030.
[7]	Beheshti H K,Lankarani H.An investigation in crashworthiness evaluation of aircraft seat cushions at extreme ranges of temperature[J].Journal of Mechanical Science and Technology,2010,24(5):1105-1110.
[8]	Coltman J W.Design and test criteria for increased energy absorbing seat effectiveness.USAAVRADCOM Technical Report 82-D-42,ADA128015,1983.
[9]	Gowdy V,De Weese R,Beebe M S,et al.A lumbar spine modification to the Hybrid Ⅲ ATD for aircraft seat tests.Wichita,KA,USA:Society of Automotive Engineers,SAE 1999-01-1609,1999.
[10]	US Government Printing Office.Title 14,US code of federal regulations[S].Washington,DC:Government Printing Office,Parts 23.562,25.562,27.562,and 29.562.,1989.
[11]	Laananen D H.Computer simulation of an aircraft seat and occupants in a crash environment-program SOM-LA/SOM-TA user manual.Technical Report DOT/FAA/CT-90/4,1991.
[12]	Laananen D H,Bolukbasi A O,Coltman J W.Computer simulation of an aircraft seat and occupant in a crash environment,Vol.1.Technical Report DOT/FAA/CT-82/33-1,1983.
[13]	Hu D Y,Yang J L,Hu M H.Full-scale vertical drop test and numerical simulation of a crashworthy helicopter seat/occupant system[J].International Journal of Crashworthiness,2009,14(6):565-583.
[14]	Hallquist J O.LS-DYNA keyword user manual[M].Livermore,CA:Livermore Software Technolgy Corporation,2007.