Finite Element Models Used to Determine the Equivalent In-plane Properties of Honeycombs

Sorohan, Ştefan; Sandu, Marin; Sandu, Adriana; Constantinescu, Dan Mihai

doi:10.1016/j.matpr.2016.03.013

Cited by 18 publications

(9 citation statements)

References 5 publications

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“…Figure 14 shows the frequency variation with different embedded depths of the plate for the first five modes. e frequencies clearly decrease (increase) with an increase in the embedded depth for modes 1, 2, and 4. e frequencies of modes 3 and 5 first increase and then decrease, and the inflection point is located at ∼7.5 mm depth, indicating a certain mutation between the embedded depth and the plate stiffness [11,[30][31][32][33].…”

Section: Effect Of Embedded Depthmentioning

confidence: 97%

Multilayered Equivalent Finite Element Method for Embedded Honeycomb Plates

Haohui

Sheng

2018

Shock and Vibration

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To investigate the mechanical properties of embedded honeycomb plates with high efficiency and accuracy, a new multilayered equivalent finite element method (FEM) model is proposed. A series of FEM numerical studies (modal analysis, static analysis, and shock spectrum analysis) are performed. The goal is to compare the errors produced by the multilayered equivalent method and by existing equivalent approaches. The obtained results indicate that the proposed model shows good agreement with the original plate. Moreover, based on the new model, a parametric study correlating the microstructure parameters (embedded depth/cell size) to modal frequency is proposed, and a multiparameter equation for frequency and embedded depth/cell size is established to serve as a basis for structural optimization design.

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Section: Effect Of Embedded Depthmentioning

confidence: 97%

Multilayered Equivalent Finite Element Method for Embedded Honeycomb Plates

Haohui

Sheng

2018

Shock and Vibration

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“…The in-plane properties include four elastic properties; shear modulus ( G x z ), two moduli of elasticity ( E x , E z ), and Poisson’s ratio (υ xz ). They are estimated according to the following formulas 23,24 :…”

Section: Theoretical Approaches and Governing Equationsmentioning

confidence: 99%

Finite element model updating of a satellite honeycomb sandwich plate in structural dynamics

Aborehab

Kamel

Nemnem

et al. 2021

International Journal of Space Structures

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The honeycomb sandwich structures have a crucial participation in aerospace industry, especially in the design of satellite structures due to their exceptional mechanical properties. The equivalent finite element modeling of such structures is initially presented through the implementation of modal analysis via the three-layered sandwich theory. Subsequently, the computational results are validated by carrying out an experimental modal testing. In addition, sensitivity analysis based upon design of experiments and parameters correlation, is executed for the sake of selecting the most appropriate design parameters for the optimization problem. Finally, finite element model updating of a honeycomb sandwich plate is thoroughly introduced using three optimization algorithms including genetic algorithms, adaptive-multiple optimization, and response surface method. A good agreement between the previously-mentioned optimization algorithms is obtained. Meanwhile, response surface method and its related design of experiments tool succeed in avoiding such time-consuming process and reduce the involved computational expense with an acceptable accuracy.

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“…In order to study the in‐plane equivalent mechanical properties of honeycombs, two different finite element (FE) models, 3D beam model, and 3D solid model are developed in ANSYS (version 13.0, ANSYS Inc.), using Ansys Programming Design Language (APDL). Explicit modeling of the complete block (Figure a), can increase very much the total number of elements and of course the number of Degrees of Freedom (DOFs), increasing the computation effort without few benefits for practical problems . For simplicity reasons, numerical methods to estimate mechanical properties of heterogeneous materials usually involve analysis of a representative volume element (RVE) corresponding to structural periodic arrangement .…”

Section: Models and Experimental Testsmentioning

confidence: 99%

“…Explicit modeling of the complete block (Figure a), can increase very much the total number of elements and of course the number of Degrees of Freedom (DOFs), increasing the computation effort without few benefits for practical problems . For simplicity reasons, numerical methods to estimate mechanical properties of heterogeneous materials usually involve analysis of a representative volume element (RVE) corresponding to structural periodic arrangement . Therefore, the representative volume elements (RVEs) for both the new honeycomb and SRH are considered for the developed finite element models, as shown in Figure b.…”

Section: Models and Experimental Testsmentioning

confidence: 99%

Mechanical Properties of a Novel Zero Poisson's Ratio Honeycomb

Chen

2017

Adv Eng Mater

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In this paper, a novel honeycomb is proposed by embedding a rib into every cell of the existing zero Poisson's ratio (ZPR) configuration, semi re-entrant honeycomb (SRH). Analytical model is developed to investigate the in-plane mechanical properties of the new honeycomb, and the resulting theoretical expressions are compared with the experimental tests and numerical results obtained from two different finite element (FE) models (3D beam model and 3D solid model), leading to a good correlation. FE analysis, analytical modeling, and experimental tests of the new honeycomb show that it can achieve ZPR effect in two principal directions. For further studies, parameters analyses are carried out to explore the dependence of the in-plane mechanical properties versus the geometric parameters. The results show that bending is the dominated deformation model when the new honeycomb is compressed along the x-direction, while stretch controlled in the ydirectional compression. It is remarkable that the new proposed honeycomb features superior specific stiffness and more flexible in mechanical properties tailoring compared to the other ZPR honeycombs in the literature. Given these benefits, the new honeycomb may be promising in some practical applications.

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Finite Element Models Used to Determine the Equivalent In-plane Properties of Honeycombs

Cited by 18 publications

References 5 publications

Multilayered Equivalent Finite Element Method for Embedded Honeycomb Plates

Multilayered Equivalent Finite Element Method for Embedded Honeycomb Plates

Finite element model updating of a satellite honeycomb sandwich plate in structural dynamics

Mechanical Properties of a Novel Zero Poisson's Ratio Honeycomb

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