A simplified dynamic low-velocity impact model for sandwich composites based on three-dimensional quasi-static analyses

T. A. Anderson, E. Madenci

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

This paper describes a nonlinear single-degree-of-freedom (SDOF) model of low-velocity impact on composite sandwich structures. The stiffness parameters of the model are derived from the results of three-dimensional quasi-static contact analyses of a rigid sphere indenting a multi-layer sandwich laminate. During the course of this investigation, it is determined that an additional term, analogous to viscous damping, is required for the model to account for energy loss due to damage and an empirical fit is required to determine its magnitude for each structure. Once determined, comparisons between low-velocity impact experiments and the nonlinear SDOF model are examined for six different foam and honeycomb sandwich configurations. In each case, a single set of parameters retains its fidelity throughout a range of impact velocities and provides accurate predictions of contact force and contact duration.

Original languageEnglish (US)
Pages (from-to)2717-2723
Number of pages7
JournalCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Volume4
StatePublished - Jan 1 2001
Externally publishedYes
Event42nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, amd Materials Conference and Exhibit Technical Papers - Seattle, WA, United States
Duration: Apr 16 2001Apr 19 2001

ASJC Scopus subject areas

  • Architecture
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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