Abstract
In this paper, a numerical virtual model of honeycomb specimen as a small structure is used to simulate its combined shear-compression behavior under impact loading. With ABAQUS/Explicit code, the response of such a structure made of shell elements is calculated under prescribed velocities as those measured in the combined shear-compression tests presented in Part I of this study. The simulated results agree well with the experimental ones in terms of overall pressure/crush curves and deformation modes. It allows for the determination of the separated normal behavior and shear behavior of honeycomb specimen under dynamic combined shear-compression. It is found that the normal strength of honeycombs decreases with increasing shearing load. Quasi-static calculations were also performed and a significant dynamic strength enhancement found in experiments was validated again in the numerical work. A crushing envelope in normal strength vs. shear strength plane was obtained on the basis of these simulations.
Original language | English |
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Pages (from-to) | 687-697 |
Number of pages | 11 |
Journal | International Journal of Solids and Structures |
Volume | 48 |
Issue number | 5 |
DOIs | |
State | Published - 1 Mar 2011 |
Keywords
- Combined shear-compression
- Dynamic strength enhancement
- FEM
- Honeycombs