Simulation on Shock Wave Propagation in Metallic Foams Subjected to Impact Loading

Yi Fen Zhang

doi:10.4028/www.scientific.net/AMM.226-228.536

Paper Titles

Analysis of Attitude and Dynamics Characteristic of a Kind of Submerged Buoy
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Dynamical Analysis of a Calcium Oscillation Model in Non-Excitable Cells
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Simulation Research on Defects Detection in Straight Pipes Using Guided Waves
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Bifurcation Induced by Mass Variation in Piecewise Linear System
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Simulation on Shock Wave Propagation in Metallic Foams Subjected to Impact Loading
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Nonlinear Dynamics of Simple-Supported Beam under Concentrated Moving Load
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Dynamic Testing and Analysis of Inflatable Beams
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Prediction of Wave Attenuation across Multiple Joints with an Improved Elastic Nonlinear Model
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An Improved Mixed-Radix FFT Technique and its Application in Frequency Spectral Analysis
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 226-228Simulation on Shock Wave Propagation in Metallic...

Simulation on Shock Wave Propagation in Metallic Foams Subjected to Impact Loading

Abstract:

A discretization elastic-plastic material model was used for simulating the shock waves transmission within metallic foams. The density heterogeneity of metallic foams was considered. Several types of aluminum foams are studied on the transmission of displacement and stresses wave under impact loading. The results reveal the characteristics of compressive wave propagation within the metal foams. Under low impact pulses, considerable energy is dissipated during the progressive collapse of foam cells, and then reduces the crush of the objects. When the pulse is high sufficiently, on the fixed end of foam, stress enhancement may take place, where high peak stresses usually occur. The magnitude of the peak stress depends on the relative density of foams, the pulse loading intensity, the pulse loading duration as well as the density homogeneity of foam materials. This research offers valuable insight into the reliability of the metal foams used as vehicles and protective structure.