Journal ArticleDOI
Dynamic response of metallic sandwich panels under blast loadings
TLDR
In this article, an energy-balance-based analytical method and finite element (FE) simulations were developed to study the dynamic response of metallic sandwich panels subject to blast loadings, and the analytical model can be used to predict approximately the deflection of the panels, while the FE model can take into account fluid-structure interactions and the effect of strain rate.Abstract:
An energy-balance-based analytical method and finite element (FE) simulations were developed in this paper to study the dynamic response of metallic sandwich panels subject to blast loadings. The analytical model can be used to predict approximately the deflection of the panels, while the FE model can take into account fluid–structure interactions and the effect of strain rate. Both models were validated by comparing their predictions with the test results available in the literature. Parametric studies were then carried out to assess various factors that are influential in characterizing the dynamic behavior of sandwich panels subject to blast loads.read more
Citations
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Journal ArticleDOI
Numerical study of blast-resistant sandwich panels with rotational friction dampers
Wensu Chen,Hong Hao +1 more
TL;DR: In this article, a new sandwich panel equipped with rotational friction hinge device with spring (RFHDS) between the outer and inner plates to resist the blast loading is introduced.
Journal ArticleDOI
Field Testing of Fence Type Blast Wall for Blast Load Mitigation
TL;DR: In this article, solid protective barriers have been demonstrated by experimental and numerical studies to be able to effectively mitigate blast loads on structures by providing a solid barrier to protect structures from external explosions.
Journal ArticleDOI
Development of a New Fence Type Blast Wall for Blast Protection: Numerical Analysis
TL;DR: In this article, a new fence type blast wall, instead of the solid wall, is proposed to resist the blast loads based on the concept of wave interference, which uses structural columns placed at strategic locations as wave stoppers to generate wave reflection, diffraction and interaction between the reflected and diffracted waves from different columns to result in self-cancellation of wave energy, thus leads to substantial reduction in blast wall size in design.
Journal ArticleDOI
Effects of Meso Shape Irregularity of Metal Foam on Yield Features under Triaxial Loading
TL;DR: In this article, the authors examined the effects of meso shape irregularity of metallic foam on yield features based on 3D Voronoi model and the finite element (FE) method.
Journal ArticleDOI
Damage Assessment of Subway Station Columns Subjected to Blast Loadings
TL;DR: In this article, the authors established a coupling "explosive-air-concrete" model and verified the feasibility of the model through experiments, which can be used in the damage assessment of subway station columns in terms of the bearing capacity.
References
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Book
Metal Foams: A Design Guide
Michael F. Ashby,Anthony G. Evans,Norman A. Fleck,Lorna J. Gibson,John W. Hutchinson,Hng Wadley,Feridun Delale +6 more
TL;DR: In this paper, the authors present a model for making metal foams characterisation methods and properties of metal foam, and a constitutive model for metal foam design for Creep with Metal Foams Sandwich Structures Energy Management: Packaging and Blast Protection Sound Absorption and Vibration Suppression Thermal Management and Heat Transfer Electrical Properties of metal Foams Cutting, Finishing and Joining Cost Estimation and Viability Case Studies Suppliers of Metal Foam Web Sites Index
Journal ArticleDOI
The Resistance of Clamped Sandwich Beams to Shock Loading
Norman A. Fleck,Vikram Deshpande +1 more
TL;DR: In this article, the structural response of the sandwich beam is split into three sequential steps: stage I is the one-dimensional fluid-structure interaction problem during the blast loading event, and results in a uniform velocity of the outer face sheet; during stage II the core crushes and the velocities of the faces and core become equalized by momentum sharing; stage III is the retardation phase over which the beam is brought to rest by plastic bending and stretching.
Journal ArticleDOI
A comparative study of impulse-resistant metal sandwich plates
Zhenyu Xue,John W. Hutchinson +1 more
TL;DR: In this paper, the performance of metal sandwich plates under impulsive blast loads is compared to that of solid plates made of the same material and having the same weight, and a limited study of weight optimization is carried out for each of the core types with respect to the respective geometric parameters, including core and face sheet thickness, core member aspect ratios and relative density.
Journal ArticleDOI
Preliminary assessment of sandwich plates subject to blast loads
Zhenyu Xue,John W. Hutchinson +1 more
TL;DR: In this paper, the authors investigated whether metal sandwich plates with sufficiently strong cores are able to sustain substantially larger blast loads than monolithic solid plates of the same material and total mass, and demonstrated the potential for superior strength and energy absorbing capacity of the sandwich plates compared with solid plates having the same mass.
Journal ArticleDOI
Metal sandwich plates optimized for pressure impulses
John W. Hutchinson,Zhenyu Xue +1 more
TL;DR: In this article, the authors extended the mechanics of dynamically loaded sandwich plates to address the problem of the minimum weight design of plates of given span that must sustain a uniformly distributed impulsive wave in air or water environments.