Wrinkling of sandwich column: comparison between finite element analysis and analytical solutions

Hadi, Bambang K.

doi:10.1016/s0263-8223(01)00060-5

Cited by 28 publications

(14 citation statements)

References 5 publications

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“…This collapse mode appeared with small buckle waves along with global odd-symmetrical bending, similar to a dual-frequency buckling mode, as illustrated in Figure 13 (left). Interestingly, due to the early formation of global bending, wrinkling with small buckle wave length appeared along with one complete sine-wave shape at large strain (Figure 13, middle), which was quite different from the traditional wrinkling [Hadi 2001]. The equivalent stress exhibited only slight fluctuations (Figure 13, right) due to the relatively small lateral deflections (Figure 13, middle) of the corrugated plate associated with wrinkling.…”

Section: 2mentioning

confidence: 92%

Untitled

2014

J. Mech. Mater. Struct.

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In this research, the vibration of the functionally graded material (FGM) plates under random excitation is presented. The FGM plate is assumed to be moderately thick. One of the refined plate theories, the firstorder shear deformable theory (FSDT) is adopted to account for the transverse shear strain. The refined form of shear correction factor is used. The plate is assumed to be simply supported along all edges with movable ends. The mechanical properties of the FGM plate are graded in the thickness direction only according to a simple power-law distribution in terms of volume fraction of constituents. Mechanical properties of constituents (ceramic and metal) of the FGM plate are assumed temperature-dependent. The FGM plate is subjected to the random pressure that is considered as a stationary and homogenous random process with zero mean and Gaussian distribution. Both the spectral density method and Monte Carlo method are used for the linear responses. Thermal effects are only included in the Monte Carlo method. The root mean square (RMS) and mean responses of the FGM plate for different plate sizes, sound pressure levels, volume fractions and temperature distributions are presented.

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Section: 2mentioning

confidence: 92%

Untitled

2014

J. Mech. Mater. Struct.

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“…For honeycomb or corrugated cores, this type of instability will not occur in practice, although local buckling of other types may occur. The wrinkling may be symmetric or asymmetric with respect to the center plane of the core and type of applied load [5].…”

Section: Introductionmentioning

confidence: 99%

The influence of geometric imperfections on the stability of three-layer beams with foam core

Wstawska

2017

Archives of Mechanical Technology and Materials

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A B S T R A C TThe 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. K E Y W O R D Sstability, buckling, three-layer beam, pure bending, FEM

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“…Fazio [11] and Drysdale [12] reported on different models for various loadings on sandwich structures. Frostig and co-workers [13,14] provided elasticity solutions for different structural configurations while analytical and numerical models for overall buckling and wrinkling have been studied extensively [15,16,17,18,19], including multiscale techniques by Yu et al [20]. Léotoing et al [21] investigated the geometrically nonlinear interaction between overall and local buckling modes, which were first succesfully captured analytically by Hunt and Wadee [4] using a variational formulation based on the potential energy method and Timoshenko bending theory.…”

Section: Introductionmentioning

confidence: 99%