Journal
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
Volume 52, Issue 10, Pages 1290-1298Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijmecsci.2010.06.004
Keywords
Honeycombs; Defect; Inhomogeneous distribution; Deformation mechanism; In-plane crushing
Categories
Funding
- National Natural Science Foundation of China [10672018, 10972028]
- China Scholarship Council
- Fundamental Research Fund
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The effects of defects and their distributions on the in-plane dynamic crushing of honeycomb panels were studied using explicit finite element modeling. The influence of defect locations and ratios is investigated on the deformation modes and the plateau stresses with respect to the impact velocity. Numerical results show that the dynamic performance of honeycomb displays a high sensitivity on the defect location, especially under low and moderate impact velocities. By introducing a defect correction factor beta(m) and using the one-dimensional shock wave theory, an empirical formula is given for the variation of honeycomb's plateau stress with respect to the impact velocity and the defect ratio. (C) 2010 Elsevier Ltd. All rights reserved.
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