The influence of the core orthotropy on the wrinkling of sandwich panels

Pozorska, Jolanta; Pozorski, Zbigniew

doi:10.17512/jamcm.2015.4.13

Cited by 9 publications

(6 citation statements)

References 10 publications

(8 reference statements)

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“…Analysing the results of LPF factor, column 2 in Table 3 - Example 1(b-d), it can be concluded that lower value of foam's E causes faster local instability of the compressed face. Similar observations have been made in the paper [10].…”

Section: Fig 2 Fe Solutions For Panel Without Openingssupporting

confidence: 91%

The influence of rectangular openings on the structural behaviour of sandwich panels with anisotropic core

Chuda-Kowalska

Malendowski

2016

J. Appl. Math. Comput. Mech.

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Abstract. Sandwich panels with thin metal sheets and a thick, anisotropic foam core are considered in the paper. While the experiments show a large anisotropy of core's material, this factor is usually neglected due to elementary assemble of sandwich panels and basically simple boundary conditions. In this paper the problem of rectangular openings is considered. Thus, the influence of two main factors on the response of modelled panels are analysed, mainly: the material model of the PU foam core and openings existing in the panel. Sensitivity analysis with respect to these factors is presented. In the final part of the paper, the conclusions are formulated.

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Section: Fig 2 Fe Solutions For Panel Without Openingssupporting

confidence: 91%

The influence of rectangular openings on the structural behaviour of sandwich panels with anisotropic core

Chuda-Kowalska

Malendowski

2016

J. Appl. Math. Comput. Mech.

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“…The regular hexagonal cell systems have different properties if we apply load (or forced displacement) in another direction. The anisotropy of the structure highly influences the structural behavior of mechanical systems [8]. In the 9c_c model, the boundary conditions have been changed.…”

Section: Resultsmentioning

confidence: 99%

Numerical modelling of the rigid polyurethane foam microstructure

Pozorski

2018

MATEC Web Conf.

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The paper presents a numerical model of 2-D microstructure of rigid polyurethane foam. The selection of geometric and material parameters is presented. For a particular structure, its behavior has been studied for typical cases of external loads (or forced displacements). The characteristic phenomena have been identified and described. A parametric analysis was performed due to the dimension of the cross-section of the struts which form the cell edges. An analysis of the impact of support and loading conditions on the behavior of the cell structure was performed.

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“…The problem discussed in this paper is close to the issues of local instability of slender shell resting on an elastic foundation [10]. It is also worth noting that the problems of instability very frequently are characterized by high sensitivity due to the parameters of the considered system [11].…”

Section: Introductionmentioning

confidence: 83%

Free vibrations of column locally resting on the Winkler elastic foundation under the specific load

Szmidla

Cieślińska-Gąsior

2016

J. Appl. Math. Comput. Mech.

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Abstract. The results of theoretical and numerical research into free vibrations of column subjected to the follower force directed towards the positive pole locally resting on Winkler elastic foundation were presented in this work. Differential equations of motion and boundary conditions of considered system were determined taking into account total mechanical energy and Hamilton's principle. On the basis of solution of boundary problem, the courses of free vibrations frequency curves as a function of external load were obtained taking into consideration parameters of length and location of Winkler elastic base and also parameters describing loading head geometry.

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The influence of the core orthotropy on the wrinkling of sandwich panels

Cited by 9 publications

References 10 publications

The influence of rectangular openings on the structural behaviour of sandwich panels with anisotropic core

The influence of rectangular openings on the structural behaviour of sandwich panels with anisotropic core

Numerical modelling of the rigid polyurethane foam microstructure

Free vibrations of column locally resting on the Winkler elastic foundation under the specific load

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