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Failure characteristics of a thin metallic sandwich plate with metallic sheared dimple cores under low-velocity impact loading

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Abstract

The functionality and the performance of a lightweight sandwich plate with periodic cellular metal (PCM) cores are influenced by failure characteristics of the lightweight sandwich plate. The goal of this paper is to investigate the failure characteristics of a thin metallic sandwich plate with metallic sheared dimple cores under low-velocity impact loading through nonlinear finite element analysis. The influence of the imperfection mode of the cores on the impact response of a thin sandwich plate is examined to obtain a proper simulation model. Repeated finite element analyses are performed to examine the failure modes of the sandwich plate for different impact conditions. Normalized impact parameters are defined in order to generalize a dynamic failure map (DFM). DFMs of the thin metallic sandwich plate have been estimated via the regression analysis of critical impact conditions for each failure mode. In addition, the influence of the normalized impact parameters on the failure mode has been investigated using the DFM.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Chosun University, Gwang-Ju, 501-759, Korea

    Dong-Gyu Ahn

  2. Department of Mechanical Engineering, Graduate School, Chosun University, Gwang-Ju, 501-759, Korea

    Woo-Chul Jeong

Authors
  1. Dong-Gyu Ahn
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  2. Woo-Chul Jeong
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Correspondence to Dong-Gyu Ahn.

Additional information

Recommended by Guest Editor Haedo Jeong

Dong-Gyu Ahn received his B.S. degree from Busan National University, Korea, in 1992. He then received his M.S. and Ph.D. degrees from KAIST in 1994 and 2002, respectively. Dr. Ahn is currently a Professor at the Department of Mechanical Engineering, Chosun University in Gwang-Ju, Korea. Dr. Ahn’s research interests include RP&M, lightweight sandwich plate, and molds & dies.

Woo-Chul Jeong received his B.S. degree from Chosun University, Korea in 2011. He then received his M.S. degree from Chosun University, Korea in 2013. Mr. Jung’s research interests include lightweight sandwich plate and impact engineering.

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Ahn, DG., Jeong, WC. Failure characteristics of a thin metallic sandwich plate with metallic sheared dimple cores under low-velocity impact loading. J Mech Sci Technol 27, 2941–2946 (2013). https://doi.org/10.1007/s12206-013-0807-2

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  • DOI: https://doi.org/10.1007/s12206-013-0807-2

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