Cushioning Optimization of Multilayer Regularly-Arranged Circular Honeycombs under In-Plane Crushing Loadings

Abstract:

To realize the cushioning optimization of multilayer regularly-arranged circular honeycombs under in-plane crushing loadings with high impact velocities, a finite element model is introduced to obtain the cushioning mechanical parameters. A simplified energy absorption model is used to evaluate the cushioning performance, which shows that the cushioning performance is related to dynamic plateau stress and dynamic densification strain. The impact velocity, deformation mode and configuration parameters determine them. Empirical formulas of critical velocity of deformation mode transition, dynamic densification strain and dynamic plateau stress are given from the discussion of numerical results. A feasible cushioning optimization algorithm is presented in detail.

• Periodical: Applied Mechanics and Materials (Volume 200)
• Pages: 104-108
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.200.104
• Online since: October 2012
• Authors: De Qiang Sun, Zong Qiang Wang, Jun Hua Feng
• Keywords: Cushioning Optimization, Energy Absorption Model, Multilayer Regularly-Arranged Circular Honeycombs, Optimal Energy Absorption Efficiency, Optimal Energy Absorption per Unit Volume

References

[1] S.D. Papka and S. Kyriakides: Int. J. Solid. Struct, Vol. 35 (1998), p.239.

[2] J. Chung and A.M. Waas: J. Eng. Mater. Technol, Vol. 121 (1999), p.494.

[3] X.M. Qiu, J. Zhang and T.X. Yu: Int. J. Impact. Eng, Vol. 36 (2009), p.1231.

[4] L.J. Gibson and M.F. Ashby: Cellular solids: structure and properties (Cambridge University Press, Cambridge 1997).

[5] S.R. Reid and C. Peng: Int. J. Impact. Eng, Vol. 19 (1997), p.531.

[6] X.M. Qiu, J. Zhang and T.X. Yu: Int. J. Impact. Eng, Vol. 36 (2009), p.1223.