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http://dx.doi.org/10.7734/COSEIK.2013.26.5.343

Numerical Simulation of Full-Scale Crash Impact Test for Fuel Cell of Rotorcraft  

Kim, Hyun-Gi (Korea Aerospace Research Institute, Aeromautics Technology Laboratory)
Kim, Sung Chan (Korea Aerospace Research Institute, Aeromautics Technology Laboratory)
Kim, Sung Jun (Korea Aerospace Research Institute, Aeromautics Technology Laboratory)
Kim, Soo Yeon (Hwaseung R&A Center, Technology Development Division)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.26, no.5, 2013 , pp. 343-349 More about this Journal
Abstract
Crashworthy fuel cells have a great influence on improving the survivability of crews. Since 1960's, the US army has developed a detailed military specification, MIL-DTL-27422, defining the performance requirements for rotorcraft fuel cells. In the qualification tests required by MIL-DTL-27422, the crash impact test should be conducted to verify the crashworthiness of fuel cell. Success of the crash impact test means the improvement of survivability of crews by preventing post-crash fire. But, there is a big risk of failure due to huge external load in the crash impact test. Because the crash impact test itself takes a long-term preparation efforts together with costly fuel cell specimens, the failure of crash impact test can result in serious delay of a entire rotorcraft development. Thus, the numerical simulations of the crash impact test has been required at the early design stage to minimize the possibility of trial-and-error with full-scale fuel cells. Present study performs the numerical simulation using SPH(smoothed particle hydro-dynamic) method supported by a crash simulation software, LS-DYNA. Test condition of MIL-DTL-27422 is reflected on analysis and material data is acquired by specimen test of fuel cell material. As a result, the resulting equivalent stresses of fuel cell itself are calculated and vulnerable areas are also evaluated.
Keywords
fuel cell; crashworthiness; crash impact test; MIL-DTL-27422; SPH;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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