系列嵌套圆环系统的能量吸收特性

doi:10.7527/S1000-6893.2014.0360

Abstract

Abstract:

The behavior of energy absorption structures is very important for the protection of human body and structures in many fields such as aeronautics and astronautics. For a kind of series nested circular ring system, the energy absorption behavior is investigated theoretically, numerically, and experimentally. First, a rigid-plastic analytical model for the series nested circular ring system under lateral quasi-static compression by two parallel rigid plates considering the effect of strain hardening is established. Further, finite element simulations and quasi-static lateral compression tests are carried out for a two-ring nested system and three-ring nested system. The corresponding force-deflection curves are compared with the analytical predictions and favorable agreement with one another has been found. Finally, the application of such kind of series nested circular ring system in aeronautics is discussed and examples are given for airplane seats. An analytical model is established for body, seat and energy absorbing system. In the light of Federal Aviation Administration (FAA) Seat Dynamic Performance Standards, the lumbar load response is calculated by the present model and compared with the result without mounting the energy absorbing system; the result indicates that human body can be effectively protected using the series nested circular ring system.

Key words: series nested circular ring system, energy absorption, load-deflection curve, lumbar load, human body protection

CLC Number:

WANG Haibo, LIU Ruirui, SUN Yuxin, LIU Hua, YANG Jialing. Energy absorption characteristics of series nested circular ring system[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(6): 1839-1847.

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Energy absorption characteristics of series nested circular ring system

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