Steel and Composite Structures

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Design of stepwise foam claddings subjected to air-blast based on Voronoi model

  • Liang, Minzu (College of Science, National University of Defense Technology) ;
  • Lu, Fangyun (College of Science, National University of Defense Technology) ;
  • Zhang, Guodong (College of Science, National University of Defense Technology) ;
  • Li, Xiangyu (College of Science, National University of Defense Technology)
  • Received : 2016.09.12
  • Accepted : 2016.12.14
  • Published : 2017.01.20
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Abstract

Design of stepwise foam claddings subjected to air-blast is performed based on random Voronoialgorithm. FE models are constructed using the random Voronoialgorithm, and numerical analysis is carried out to simulate deformation mode and energy absorption of the cladding by the ABAQUS/Explicit software. The FE model is validated by test result, and good agreement is achieved. The deformation patterns are presented to give an insight into the influences of distribution on deformation mechanisms. The energy absorbed by the stepwise foam cladding is examined, and the parameter effects, including layer number, gradient, and blast loading, are discussed. Results indicate that the energy absorption capacity increases with the number of layer, gradient degree, and blast pressure increasing.

Keywords

Acknowledgement

Supported by : China National Natural Science Funding

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