Techno Press

Steel and Composite Structures   Volume 23, Number 1, January20 2017, pages 107-114
Design of stepwise foam claddings subjected to air-blast based on Voronoi model
Minzu Liang, Fangyun Lu, Guodong Zhang and Xiangyu Li

Abstract     [Full Text]
    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.
Key Words
    Voronoi; air-blast; foam; cladding
College of Science, National University of Defense Technology, 410073 Changsha, P.R. China.

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