Impact behavior of honeycombs under combined shear-compression. Part II: Analysis

B. Hou, S. Pattofatto, Y. L. Li, H. Zhao

Research output: Contribution to journalArticlepeer-review

78 Scopus citations

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 languageEnglish
Pages (from-to)687-697
Number of pages11
JournalInternational Journal of Solids and Structures
Volume48
Issue number5
DOIs
StatePublished - 1 Mar 2011

Keywords

  • Combined shear-compression
  • Dynamic strength enhancement
  • FEM
  • Honeycombs

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