Determination of Honeycomb Material Properties: Existing Theories and an Alternative Dynamic Approach

Schwingshackl, Christoph W.; Aglietti, Guglielmo S.; Cunningham, P.R.

doi:10.1061/(asce)0893-1321(2006)19:3(177)

Cited by 77 publications

(40 citation statements)

References 16 publications

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“…Despite this last work represents a great step forward in the evaluation of the honeycomb structure properties it shows also a weakness: the out-of-plane shear properties of the honeycomb core are not univocally determined since the authors give only the lower and upper bounds for these properties. Other analytical approaches have been developed during the following years, for example [14] where the authors take into account also the skins e ect or [23] where some experimental results are used to develop an analytical method to determine the out-of-plane mechanical properties. Other researchers developed di erent numerical approaches based on the Finite Element (FE) technique to investigate the material properties of honeycomb structures.…”

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confidence: 99%

A multi-scale approach for the optimum design of sandwich plates with honeycomb core. Part I: homogenisation of core properties

Catapano

Montemurro

2014

Composite Structures

115

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This work deals with the problem of the optimum design of a sandwich panel. The design process is based on a general two-level optimisation strategy involving di erent scales: the meso-scale for both the unit cell of the core and the constitutive layer of the laminated skins and the macro scale for the whole panel. Concerning the meso-scale of the honeycomb core, an appropriate model of the unit cell able to properly provide its e ective elastic properties (to be used at the macro-scale) must be conceived. To this purpose, in this rst paper, we present the numerical homogenisation technique as well as the related nite element model of the unit cell which makes use of solid elements instead of the usual shell ones. A numerical study to determine the e ective properties of the honeycomb along with a comparison with existing models and a sensitive analysis in terms of the geometric parameters of the unit cell have been conducted. Numerical results show that shell-based models are no longer adapted to evaluate the core properties, mostly in the context of an optimisation procedure where the parameters of the unit cell can get values that go beyond the limits imposed by a 2D model.

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confidence: 99%

A multi-scale approach for the optimum design of sandwich plates with honeycomb core. Part I: homogenisation of core properties

Catapano

Montemurro

2014

Composite Structures

115

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“…Thermal FE models were constructed in accordance with the FE models for SSS simulation and large reflector model was 01005-p. 3 adopted by a number of simplifications. The effective thermal characteristics of honeycomb plate was calculated by using approaches and theories described in [4,5]. Each model has its design features, whose implementation was successfully carried out with the use of possibilities to build and model parameterization in software package ANSYS.…”

Section: Thermophysical Basis Of Energy Technologiesmentioning

confidence: 99%

Spacecraft reflectors thermomechanical analysis

Ponomarev

Герасимов

Пономарев

et al. 2015

EPJ Web of Conferences

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“…In the near past numerical and experimental studies on the mode-III [35,36] and mixed modes II/III, I/II/III [37][38][39] delamination of sandwich beams were conducted. Generally, sandwich panels and plates are fabricated by using foam [40] -which has significant damping [41] -or metal honeycomb [28,[42][43][44] as core material, while facesheets are made from composite or metal plates [34]. Most of the relevant works are related to the facesheet-core debond characterization, however, there are also other scenarios, like the failure of the core and the face delamination [34].…”

Section: Introductionmentioning

confidence: 99%

Analytical solution of some delamination scenarios in thick structural sandwich plates

Szekrényes

2017

Jnl of Sandwich Structures & Materials

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The first-, second-and third-order shear deformation plate theories are applied in this work to model thick rectangular sandwich plates with through-width delamination. The models are based on the concept of the four equivalent single layers and the system of exact kinematic conditions. Three different scenarios are considered: the failure of the core, the delamination between the top facesheet and the core, and finally, the case when the delamination takes place in the local midplane of the top facesheet. A general model is derived and applied to sandwich plates with Lévy type boundary conditions. The governing equations are summarized and the state-space model of the system is created. The mechanical fields are calculated and compared to finite element results. The comparison shows that the first-order sandwich plate model is inaccurate, on the other hand, the second-and third-order theories capture very well the mechanical fields compared to finite element results. The J-integral distribution is also calculated along the delamination front and it is concluded that the third-and second-order models give very good approximations of the results by finite element analysis and the virtual crack closure technique.

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Determination of Honeycomb Material Properties: Existing Theories and an Alternative Dynamic Approach

Cited by 77 publications

References 16 publications

A multi-scale approach for the optimum design of sandwich plates with honeycomb core. Part I: homogenisation of core properties

A multi-scale approach for the optimum design of sandwich plates with honeycomb core. Part I: homogenisation of core properties

Spacecraft reflectors thermomechanical analysis

Analytical solution of some delamination scenarios in thick structural sandwich plates

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