Numerical simulation on dynamic crushing behaviors of tetrachiral honeycombs

Lu Zi-xing; Li Kang

doi:10.11883/1001-1455(2014)02-0181-07

Volume 34 Issue 2

May 2014

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Lu Zi-xing, Li Kang. Numerical simulation on dynamic crushing behaviors of tetrachiral honeycombs[J]. Explosion And Shock Waves, 2014, 34(2): 181-187. doi: 10.11883/1001-1455(2014)02-0181-07

Citation:

Lu Zi-xing, Li Kang. Numerical simulation on dynamic crushing behaviors of tetrachiral honeycombs[J]. Explosion And Shock Waves, 2014, 34(2): 181-187. doi: 10.11883/1001-1455(2014)02-0181-07

Lu Zi-xing, Li Kang. Numerical simulation on dynamic crushing behaviors of tetrachiral honeycombs[J]. Explosion And Shock Waves, 2014, 34(2): 181-187. doi: 10.11883/1001-1455(2014)02-0181-07

Citation:

Lu Zi-xing, Li Kang. Numerical simulation on dynamic crushing behaviors of tetrachiral honeycombs[J]. Explosion And Shock Waves, 2014, 34(2): 181-187. doi: 10.11883/1001-1455(2014)02-0181-07

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Numerical simulation on dynamic crushing behaviors of tetrachiral honeycombs

doi: 10.11883/1001-1455(2014)02-0181-07

Lu Zi-xing^,,
Li Kang

Institute of Solid Mechanics, Beijing University of Aeronautics and Astronautics, Beijing100191, China

Funds: Supported by National Natural Science Foundationof China (10932001, 11272030)

More Information

Corresponding author: Lu Zi-xing, luzixing@buaa.edu.cn
Received Date: 2012-09-13
Rev Recd Date: 2013-03-29
Publish Date: 2014-03-25

Abstract

Abstract

A finite element model was developed for tetrachiral honeycombs.By using the developed model, numerical simulations were conducted to explore the deformation modes and energy absorption properties of the tetrachiral honeycombs subjected to different impact velocities.And the corresponding numerical simulations were carried out on hexagonal honeycombs by applying the existent model.The deformation mode diagrams and the dynamic response curves for two kinds of honeycombs were obtained.At low impact velocities, the deformation of tetrachiral honeycombs is of"Z"mode.At high impact velocities, "I"deformation mode is observed in tetrachiral honeycombs when crushing, which is similar to traditional honeycombs.And a transitional deformation mode is present in tetrachiral honeycombs subjected to moderate impact velocities.As the impact velocity increases, the localized bands transit from the fixed end to the impact end and the tetrachiral honeycombs display higher energy absorption capacities.When the velocity is low or moderate, the auxetic honeycombs display the unique shrinkage under dynamic compression.
- solid mechanics,
- dynamic crushing,
- ANSYS/LS-DYNA,
- tetrachiral honeycomb,
- deformation mechanism,
- energy absorption,
- auxetic

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References(15)

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