Skip to main content
placeholder image

Impact and close-in blast response of auxetic honeycomb-cored sandwich panels: Experimental tests and numerical simulations

Journal Article


Abstract


  • Protecting building, critical infrastructure and military vehicles from Improvised Explosive Devices (IEDs) has become a critical task. This study aims to examine the performance of a new protective system utilizing auxetic honeycomb-cored sandwich panels for mitigation of shock loads from close-in and contact detonations of high explosives. Both field blast tests and drop weight tests were performed using the proposed sandwiches as a shield for concrete panels in combination with conventional steel protective plates. The combined shield was found to be effective in protecting reinforced concrete structures against severe impact and close-in blast loadings. The honeycomb core with re-entrant hexagonal cells shows evident auxetic characteristics which contribute substantially to outstanding force mitigation and blast-resistance performances of such sandwich panels. Numerical simulations showed good agreement with the experimental results. The proposed auxetic panels were found to perform better than conventional honeycomb panels of the same size, areal density and material. Both were found to boost the ener gy absorption of the monolithic steel plate by a factor of 2.5 by changing its deformation pattern under close-in blast loading. In addition, a combination of the steel plate and an auxetic sandwich panel has aerial specific energy absorption (ASEA) higher than either of them, showing great potential for the development of lightweight blast protection of civil, mining, military, nuclear infrastructure and vehicles.

UOW Authors


  •   Qi, Chang (external author)
  •   Alex M. Remennikov
  •   Pei, Lian (external author)
  •   Yang, Shu (external author)
  •   Yu, Zhi (external author)
  •   Ngo, Tuan D. (external author)

Publication Date


  • 2017

Citation


  • Qi, C., Remennikov, A., Pei, L., Yang, S., Yu, Z. & Ngo, T. D. (2017). Impact and close-in blast response of auxetic honeycomb-cored sandwich panels: Experimental tests and numerical simulations. Composite Structures, 180 161-178.

Scopus Eid


  • 2-s2.0-85026895058

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/582

Number Of Pages


  • 17

Start Page


  • 161

End Page


  • 178

Volume


  • 180

Place Of Publication


  • United Kingdom

Abstract


  • Protecting building, critical infrastructure and military vehicles from Improvised Explosive Devices (IEDs) has become a critical task. This study aims to examine the performance of a new protective system utilizing auxetic honeycomb-cored sandwich panels for mitigation of shock loads from close-in and contact detonations of high explosives. Both field blast tests and drop weight tests were performed using the proposed sandwiches as a shield for concrete panels in combination with conventional steel protective plates. The combined shield was found to be effective in protecting reinforced concrete structures against severe impact and close-in blast loadings. The honeycomb core with re-entrant hexagonal cells shows evident auxetic characteristics which contribute substantially to outstanding force mitigation and blast-resistance performances of such sandwich panels. Numerical simulations showed good agreement with the experimental results. The proposed auxetic panels were found to perform better than conventional honeycomb panels of the same size, areal density and material. Both were found to boost the ener gy absorption of the monolithic steel plate by a factor of 2.5 by changing its deformation pattern under close-in blast loading. In addition, a combination of the steel plate and an auxetic sandwich panel has aerial specific energy absorption (ASEA) higher than either of them, showing great potential for the development of lightweight blast protection of civil, mining, military, nuclear infrastructure and vehicles.

UOW Authors


  •   Qi, Chang (external author)
  •   Alex M. Remennikov
  •   Pei, Lian (external author)
  •   Yang, Shu (external author)
  •   Yu, Zhi (external author)
  •   Ngo, Tuan D. (external author)

Publication Date


  • 2017

Citation


  • Qi, C., Remennikov, A., Pei, L., Yang, S., Yu, Z. & Ngo, T. D. (2017). Impact and close-in blast response of auxetic honeycomb-cored sandwich panels: Experimental tests and numerical simulations. Composite Structures, 180 161-178.

Scopus Eid


  • 2-s2.0-85026895058

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/582

Number Of Pages


  • 17

Start Page


  • 161

End Page


  • 178

Volume


  • 180

Place Of Publication


  • United Kingdom