The paper describes recent progress on the materials modelling and numerical simulation of the dynamic crash response of fibre reinforced composite structures. The work is based on the application of explicit finite element analysis codes to composite aircraft structures and structural elements under low velocity impact conditions (up to 15 m/s). Structures studied are designed to absorb crash energy and reduce seat deceleration pulses in aircraft subfloor structures, and consist of an aircraft keel beam concept for an executive aircraft and hybrid carbon/aramid helicopter subfloor box structures. Comparison between predicted structural response and failure modes with observed test results are given in each case.
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Johnson et al. (1997) studied this question.