Structural Engineering and Mechanics

  • 제32권2호
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  • Pages.351-370
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  • 2009
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Tearing of metallic sandwich panels subjected to air shock loading

  • Zhu, Feng (Faculty of Engineering and Industrial Sciences, Swinburne University of Technology) ;
  • Lu, Guoxing (Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, School of Mechanical and Aerospace Engineering, Nanyang Technological University) ;
  • Ruan, Dong (Faculty of Engineering and Industrial Sciences, Swinburne University of Technology) ;
  • Shu, Dong-Wei (School of Mechanical and Aerospace Engineering, Nanyang Technological University)
  • 투고 : 2008.11.29
  • 심사 : 2009.02.20
  • 발행 : 2009.05.30
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a computational study for the structural response of blast loaded metallic sandwich panels, with the emphasis placed on their failure behaviours. The fully-clamped panels are square, and the honeycomb core and skins are made of the same aluminium alloy. A material model considering strain and strain rate hardening effects is used and the blast load is idealised as either a uniform or localised pressure over a short duration. The deformation/failure procedure and modes of the sandwich panels are identified and analysed. In the uniform loading condition, the effect of core density and face-sheets thicknesses is analysed. Likewise, the influence of pulse shape on the failure modes is investigated by deriving a pressure-impulse (P-I) diagram. For localised loading, a comparative study is carried out to assess the blast resistant behaviours of three types of structures: sandwich panel with honeycomb core, two face-sheets with air core and monolithic plate, in terms of their permanent deflections and damage degrees. The finding of this research provides a valuable insight into the engineering design of sandwich constructions against air blast loads.

키워드

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  7. Crushing analysis and crashworthiness optimization design of reinforced regular hexagon honeycomb sandwich panel vol.23, pp.6, 2009, https://doi.org/10.1515/secm-2014-0199
  8. Crushing analysis and crashworthiness optimization design of reinforced regular hexagon honeycomb sandwich panel vol.23, pp.6, 2009, https://doi.org/10.1515/secm-2014-0199