Dynamic response of double-layer rectangular sandwich plates with metal foam cores subjected to blast loading

•The analytical model for dynamic response of double-layer sandwich plates under blast loading is developed.•The so-called ‘bounds’ are obtained by using approximate yield criteria.•Membrane mode solutions are obtained for dynamic response.•The analytical model captures numerical results reasonably....

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Bibliographic Details
Published inInternational journal of impact engineering Vol. 122; pp. 265 - 275
Main Authors Zhang, Jianxun, Zhou, Renfang, Wang, Mingshi, Qin, Qinghua, Ye, Yang, Wang, T.J.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.12.2018
Elsevier BV
Subjects
Blast loads
Core layer-by-layer compression
Double-layer sandwich plate
Dynamic response
Finite element method
Impact resistance
Impact strength
Large deflection
Metal foams
Numerical analysis
Plates (structural members)
Structural engineering
Yield criterion
Dynamic response
Double-layer sandwich plate
Large deflection
Yield criterion
Core layer-by-layer compression
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Summary:•The analytical model for dynamic response of double-layer sandwich plates under blast loading is developed.•The so-called ‘bounds’ are obtained by using approximate yield criteria.•Membrane mode solutions are obtained for dynamic response.•The analytical model captures numerical results reasonably. In this paper, the analytical and numerical analyses are conducted to predict the dynamic response of fully clamped double-layer rectangular sandwich plates with metal foam cores subjected to blast loading. The so-called ‘bounds’ of analytical solutions for dynamic response of double-layer sandwich plates are obtained by using the inscribing and circumscribing squares of the exact yield locus. Also, the membrane mode solution for large deflection of the double-layer sandwich plates is presented. The effect of the double-layer factor on the dynamic response of double-layer sandwich plates is also discussed. The finite element calculation is carried out to study the dynamic response of the double-layer sandwich plates subjected to blast loading. Good agreement is achieved between the analytical predictions and numerical results. It is demonstrated that the impact resistance of the double-layer sandwich plate is better than that of the monolayer one with the same mass subjected to the higher impulse.
ISSN:0734-743X
1879-3509
DOI:10.1016/j.ijimpeng.2018.08.016