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Dynamic and Quasi-Static Propagation of Compaction Waves in a Low-Density Epoxy Foam

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Abstract

We conducted dynamic and quasi-static compression experiments with low-density (ρ = 120 kg/m3) epoxy foam specimens. The specimens had a 10.0-mm-square cross-section and a length of 19.3 mm. Dynamic experiments were conducted with a modified split Hopkinson pressure bar (SHPB), and the quasi-static experiments were conducted with a hydraulic load frame device (MTS-810). In both cases, the specimens were loaded from one end at a constant velocity. Equally spaced grid lines were marked on the specimens to monitor the deformation history. Digital images taken at equally spaced time intervals gave the positions of each grid line. These images showed that a constant end-face velocity V produced a compaction wave front that traveled at a constant velocity C in both dynamic and quasi-static experiments. We described these results with a shockwave analysis that used a locking solid material model.

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Authors and Affiliations

  1. School of Aeronautics and Astronautics, Purdue University, West Lafayette, IN, 49707-2023, USA

    B. Song (SEM member)

  2. Sandia National Laboratories, Albuquerque, NM, 87185-0482, USA

    M. J. Forrestal (SEM member)

  3. Schools of Aeronautics/Astronautics and Materials Engineering, Purdue University, West Lafayette, IN, 47907-2023, USA

    W. Chen (SEM member)

Authors
  1. B. Song
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  2. M. J. Forrestal
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  3. W. Chen
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Correspondence to W. Chen.

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Song, B., Forrestal, M.J. & Chen, W. Dynamic and Quasi-Static Propagation of Compaction Waves in a Low-Density Epoxy Foam. Exp Mech 46, 127–136 (2006). https://doi.org/10.1007/s11340-006-5871-4

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  • DOI: https://doi.org/10.1007/s11340-006-5871-4

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