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Acta Mechanica Solida Sinica

, Volume 19, Issue 1, pp 9–17 | Cite as

On residual compressive strength prediction of composite sandwich panels after low-velocity impact damage

  • Zonghong Xie
  • Anthony J. Vizzini
  • Qingru Tang
Article

Abstract

This paper introduces a nonlinear finite element analysis on damage propagation behavior of composite sandwich panels under in-plane uniaxial quasi-static compression after a low velocity impact. The major damage modes due to the impact, including the residual indentation on the impacted facesheet, the initially crushed core under the impacted area, and the delamination are incorporated into the model. A consequential core crushing mechanism is incorporated into the analysis by using an element deactivation technique. Damage propagation behavior, which corresponds to those observed in sandwich compression after impact (SCAI) tests, has been successfully captured in the numerical simulation. The critical far field stress corresponding to the onset of damage propagation at specified critical locations near the damage zone are captured successfully. They show a good correlation with experimental data. These values can be used to effectively predict the residual compressive strength of low-velocity impact damaged composite sandwich panels.

Key words

sandwich structures impact delamination damage growth honeycomb core finite element method 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2006

Authors and Affiliations

  • Zonghong Xie
    • 1
  • Anthony J. Vizzini
    • 2
  • Qingru Tang
    • 3
  1. 1.College of AstronauticsNorthwestern Polytechnical UniversityXi’anChina
  2. 2.Department of Aerospace EngineeringMississippi State UniversityStarkvilleUSA
  3. 3.Aviation Engineering InstituteCivil Aviation Flight University of ChinaGuanghanChina

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