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Finite Element Analysis of Dynamic Mechanical Responses of Aluminum Honeycomb Sandwich Structures Under Low-Velocity Impact

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Abstract

Honeycomb sandwich structures, composed of many regularly arranged hexagonal cores and two skins, often show excellent impact performance due to strong energy absorption ability under impact loads. This paper studies dynamic mechanical responses of aluminum honeycomb sandwich structures. Parametric geometry modeling using UG software and finite element analysis using ANSYS explicit dynamics module are performed. Finite difference algorithm based on time-stepping integration is used to get the impact displacement, and stress and strain with time. Effects of different impact velocities, core length and wall thickness on the distributions of plastic stress and strain are also explored. Results show that thinner honeycomb side length and thicker wall thickness lead to stronger impact resistance. This research provides theoretical support for promoting optimal design of lightweight structures against impact loads.

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Acknowledgments

Dr. P.F. Liu would sincerely like to thank for the support by the National Key Fundamental Research and Development Project of China (No. 2015CB057603).

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Authors and Affiliations

  1. Institute of Chemical Machinery and Process Equipment, School of Energy Engineering, Zhejiang University, Hangzhou, 310027, China

    P. F. Liu, X. K. Li & Z. B. Li

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  1. P. F. Liu
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  2. X. K. Li
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  3. Z. B. Li
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Correspondence to P. F. Liu.

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Liu, P.F., Li, X.K. & Li, Z.B. Finite Element Analysis of Dynamic Mechanical Responses of Aluminum Honeycomb Sandwich Structures Under Low-Velocity Impact. J Fail. Anal. and Preven. 17, 1202–1207 (2017). https://doi.org/10.1007/s11668-017-0358-4

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  • DOI: https://doi.org/10.1007/s11668-017-0358-4

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