Dynamic crushing of cellular materials: a particle velocity-based analytical method and its application
作者: Shilong WangZhijun ZhengYuanyuan DingChangfeng ZhuJilin Yu
作者单位: 1School of Civil Engineering, Anhui University of Technology
2CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China
3Mechanics and Materials Science Research Center, Ningbo University
刊名: Acta Mechanica Sinica, 2019, Vol.35 (4), pp.839-851
来源数据库: Springer Journal
DOI: 10.1007/s10409-019-00859-w
关键词: Cellular materialVelocity distributionDynamic behaviorStrain rate effectDynamic stress–strain state
英文摘要: Abstract(#br)Cellular material under high-velocity impact exhibits a typical feature of layerwise collapse. A cell-based finite element model is employed herein to simulate the direct impact of a closed-cell foam, and one-dimensional velocity field distributions are obtained to characterize the crushing band propagating through a cellular material. An explicit expression for the continuous velocity distribution is derived based on the features of the velocity gradient distribution. The velocity distribution function is adopted to determine the dynamic stress–strain states of cellular materials under dynamic loading. The local stress–strain history distribution reveals that sectional cells experience a process from the precursor elastic behavior to the shock stress state, passing through...
全文获取路径: Springer  (合作)
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影响因子:0.688 (2012)

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