Global and local buckling of sandwich circular and beam-rectangular plates with metal foam core

2017 ◽

Vol 37 (1) ◽

pp. 65-69 ◽

Cited By ~ 2

Author(s):

Iwona Wstawska

Keyword(s):

Metal Foam ◽

Plastic Material ◽

Local Buckling ◽

Foam Core ◽

Pure Bending ◽

Geometric Imperfections ◽

The Core ◽

Analysis Of Stability ◽

Elastic Plastic Material ◽

The Stability

Abstract The main objective of this work is the numerical analysis (FE analysis) of stability of three-layer beams with metal foam core (alumina foam core). The beams were subjected to pure bending. The analysis of the local buckling was performed. Furthermore, the influence of geometric parameters of the beam and material properties of the core (linear and non-linear model) on critical loads values and buckling shape were also investigated. The calculations were made on a family of beams with different mechanical properties of the core (elastic and elastic-plastic material). In addition, the influence of geometric imperfections on deflection and normal stress values of the core and the faces has been evaluated.

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Effective design of a sandwich beam with a metal foam core

Thin-Walled Structures ◽

10.1016/j.tws.2007.03.005 ◽

2007 ◽

Vol 45 (4) ◽

pp. 432-438 ◽

Cited By ~ 35

Author(s):

E. Magnucka-Blandzi ◽

K. Magnucki

Keyword(s):

Metal Foam ◽

Sandwich Beam ◽

Foam Core ◽

Effective Design

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Non-Local Buckling Analysis of Functionally Graded Nanoporous Metal Foam Nanoplates

Coatings ◽

10.3390/coatings8110389 ◽

2018 ◽

Vol 8 (11) ◽

pp. 389 ◽

Cited By ~ 9

Author(s):

Yanqing Wang ◽

Zhiyuan Zhang

Keyword(s):

Metal Foam ◽

Plate Theory ◽

Constitutive Relations ◽

Equations Of Motion ◽

Local Buckling ◽

Functionally Graded ◽

Small Scale ◽

Refined Plate Theory ◽

Nanoporous Metal ◽

Non Local

In this study, the buckling of functionally graded (FG) nanoporous metal foam nanoplates is investigated by combining the refined plate theory with the non-local elasticity theory. The refined plate theory takes into account transverse shear strains which vary quadratically through the thickness without considering the shear correction factor. Based on Eringen’s non-local differential constitutive relations, the equations of motion are derived from Hamilton’s principle. The analytical solutions for the buckling of FG nanoporous metal foam nanoplates are obtained via Navier’s method. Moreover, the effects of porosity distributions, porosity coefficient, small scale parameter, axial compression ratio, mode number, aspect ratio and length-to-thickness ratio on the buckling loads are discussed. In order to verify the validity of present analysis, the analytical results have been compared with other previous studies.

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Benchmark solutions and assessment of variable kinematics models for global and local buckling of sandwich struts

Composite Structures ◽

10.1016/j.compstruct.2016.01.019 ◽

2016 ◽

Vol 156 ◽

pp. 125-134 ◽

Cited By ~ 21

Author(s):

Michele D’Ottavio ◽

Olivier Polit ◽

Wooseok Ji ◽

Anthony M. Waas

Keyword(s):

Local Buckling ◽

Global And Local ◽

Benchmark Solutions

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LOAD-CARRYING CAPACITIES FOR CIRCULAR METAL FOAM CORE SANDWICH PANELS AT LARGE DEFLECTION

International Journal of Modern Physics B ◽

10.1142/s0217979208051820 ◽

2008 ◽

Vol 22 (31n32) ◽

pp. 6218-6223 ◽

Cited By ~ 1

Author(s):

W. HOU ◽

Z. WANG ◽

L. ZHAO ◽

G. LU ◽

D. SHU

Keyword(s):

Finite Element ◽

Velocity Field ◽

Large Deflection ◽

Metal Foam ◽

Yield Criterion ◽

Metallic Foam ◽

Foam Core ◽

Element Simulation ◽

Load Carrying ◽

Good Agreement

This paper is concerned with the load-carrying capacities of a circular sandwich panel with metallic foam core subjected to quasi-static pressure loading. The analysis is performed with a newly developed yield criterion for the sandwich cross section. The large deflection response is estimated by assuming a velocity field, which is defined based on the initial velocity field and the boundary condition. A finite element simulation has been performed to validate the analytical solution for the simply supported cases. Good agreement is found between the theoretical and finite element predictions for the load-deflection response.

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