Volume 39 Issue 10
Oct 2025
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NIU Yining, WU Yue, WANG Tiangen, LI Gan. Anti-Explosion Performance of Composite Blast-Resistant Walls Containing an Aluminum Foam Energy-Absorbing Layer[J]. Chinese Journal of High Pressure Physics, 2025, 39(10): 104101. doi: 10.11858/gywlxb.20251027
Citation: NIU Yining, WU Yue, WANG Tiangen, LI Gan. Anti-Explosion Performance of Composite Blast-Resistant Walls Containing an Aluminum Foam Energy-Absorbing Layer[J]. Chinese Journal of High Pressure Physics, 2025, 39(10): 104101. doi: 10.11858/gywlxb.20251027

Anti-Explosion Performance of Composite Blast-Resistant Walls Containing an Aluminum Foam Energy-Absorbing Layer

doi: 10.11858/gywlxb.20251027
  • Received Date: 17 Feb 2025
  • Rev Recd Date: 26 Mar 2025
  • Available Online: 01 Apr 2025
  • Issue Publish Date: 05 Oct 2025
  • To investigate the effect of the aluminum foam energy-absorbing layer on the blast-resistance performance of concrete blast walls, LS-DYNA was used to simulate the dynamic response of composite explosion-proof walls with aluminum foam energy-absorbing layers. The study analyzed the influences of the structural parameters of the aluminum foam sandwich panel, the relative density of the aluminum foam, and the intensity of the explosive load on the deformation patterns and the blast-resistance performance. The results show that during the explosion, the composite blast wall mainly absorbs blast-wave energy through the local bending deformation of the front panel and the plastic collapse deformation of the core layer. The blast-resistance performance of the composite blast wall is positively correlated with the core layer thickness and negatively correlated with the panel thickness. However, if the panel is too thin, it will experience localized fracture failure due to insufficient strength. As the relative density of the aluminum foam increases, the anti-explosive properties of the explosion-proof wall initially improve significantly but then tend to level off. When the relative density exceeds the critical threshold, the decrease in the material’s wave impedance gradient significantly weakens its protective effectiveness. Under an explosive loading condition with a 7.5 kg charge and a burst distance of 50 cm, when the core layer thickness is 6 cm, the panel thickness is 0.5 cm, and the relative density of the aluminum foam is 44%, the energy-absorbing properties of the material can be fully utilized. The core layer has a compression ratio of 73.3%, and the composite explosion-proof wall has a wave-attenuation coefficient of 77.5%. As the blast load increases, the clipping coefficient of the composite blast wall exhibits a changing trend of “strengthening-equilibrium-destabilization”. This study provides valuable references for the application of aluminum foam in blast-protection systems.

     

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