Bending and free vibration analysis of sandwich plates with functionally graded soft core, using the new refined higher-order analysis model

Ye, Renchuan; Zhao, Na; Yang, Desen; Cui, Jie; Gaidai, Oleg; Ren, Peng

doi:10.1177/1099636220909763

Cited by 24 publications

(8 citation statements)

References 61 publications

(74 reference statements)

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“…Then, they investigated the impact of various parameters (i.e., geometrical parameters, porosity parameter, the porosity distribution pattern, the thickness of the porous core, and compressibility of pore‐fluid) on natural frequencies. Ye et al [ 15 ] presented a high‐order modified model for analyzing the free and static vibrations of a sandwich plate with a core made of soft materials and evaluated the ratio of variable length, the ratio of thickness between the shell and the core, and the ratio of the span‐to‐thickness of sandwich plates. The obtained results indicated that the proposed model can provide higher accuracy for sandwich plates with a soft material core compared to conventional sandwich models and those based on the finite element method.…”

Section: Introductionmentioning

confidence: 99%

Free vibration optimization of a sandwich structure with a hybrid composite grid core

Kermani

Ehsani

2022

Polymer Composites

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This study presents the multi‐objective optimization of weight and cost concerning the vibration behavior of a sandwich structure. In this regard, the maximization of frequency against the minimization of the structure's weight or cost is considered the objective functions in the optimization algorithm. For this purpose, a sandwich structure with two composite skins and an orthotropic grid core is designed. The design variables including the core geometrical variables, and the type of the applied composite materials for each group of stiffeners of the core. The first‐order shear deformation theory and the Ritz method have been used to obtain the natural frequencies of the plates. Eventually, optimization has been performed using the genetic algorithm.

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Section: Introductionmentioning

confidence: 99%

Free vibration optimization of a sandwich structure with a hybrid composite grid core

Kermani

Ehsani

2022

Polymer Composites

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“…Lightweight multi-layered structures, including bilayers, trilayers, and sandwich plates which are made of soft materials have emerged as promising structures in different technological fields such as marine, automotive, civil, and mechanical engineering (Ye et al, 2021). The other important factor in these types of applications is controlling the structures’ behavior using smart materials for example, shape memory polymer, and hydrogels.…”

Section: Introductionmentioning

confidence: 99%

Programmable self-folding of trilayer and bilayer-hinge structures by time-dependent swelling of tough hydrogels

Shojaeifard

Niroumandi

Baghani

2022

Journal of Intelligent Material Systems and Structures

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Inspired by nature, active materials are used to developed complex 3D configurations considering their specific characteristics. One of the shape-shifting methods in smart structures is utilizing programmable materials in self-folding structures. Hydrogels due to their biocompatibility, controllable functionalities, large reversible deformations, and their sensitivity to environmental stimuli are vital candidates to be used in self-folding structures. To avoid the mechanical weakness of conventional hydrogels, in this paper polyampholyte tough hydrogel is inspected considering a transient electro-chemo-mechanical constitutive model combining a visco-hyperelastic model with Nernst-Planck and Poisson’s equations. After calibrating the material parameters and verifying the accuracy of the model and its implementation, we present two approaches in order to generate self-folding hydrogel-based structures: polymer structure with bilayer hinges and trilayer structure composed of a hydrogel film sandwiched between two elastomer layers. Next, diverse factors are examined in the self-folding of smart structures which conforms with experimental test data, including hydrogel swelling, structure thickness and stiffness, bilayer configuration and composition, the width of the bilayer as well as opening width in trilayer and layers thickness. Finally, several transient self-folding of 2D flat patterns which turn into 3D complex configurations are scrutinized such as the closure of box, pyramids, and flower-shaper gripper.

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“…Hao et al 56 studied the vibration response of the FGM sandwich plate via Reddy’s displacement fields. Ye et al 57 introduced a new HSDT model for flexure and vibration response of the FGM sandwich plate via the FEM approach. Fang et al 58 examined the free vibration of rotating FGM nanobeams via nonlocal models Euler–Bernoulli and Timoshenko beam theories.…”

Section: Introductionmentioning

confidence: 99%

New HSDT for free vibration analysis of elastically supported porous bidirectional functionally graded sandwich plate using collocation method

Kumar

Bajaj

Singh

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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The present paper deals with the free vibration response of elastically supported porous bidirectional functionally graded soft-core sandwich rectangular plate with proposed new tangent shape function-based higher-order transverse shear deformation theory. The theory is accomplished to uphold the continuity of transverse shear stresses and zero shear stress conditions on both the extreme surfaces of a plate. The bidirectional gradation varies through the thickness ( z-axis) and length ( x-axis) directions. The effective material properties are calculated via the modified power-law. The governing differential equations (GDEs) of motion are acquired via the Hamilton principle. The inverse multi-quadric radial basis function-based Collocation method is implemented to discretize the GDEs obtained by strong form formulation. The current theory and method’s accuracy and efficacy are validated by comparing the present results with existing results in the literature. Studies show that the results of the proposed theory are in close agreement with 3D approach. Numerical results are obtained with a different scheme of sandwich layers for free vibration analysis. Effects of grading index, porosity fraction, two parameters foundation, different scheme, and the span to thickness ratio on free vibration response have been discussed. New results for free vibration response in porous media are presented with different skin materials.

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Bending and free vibration analysis of sandwich plates with functionally graded soft core, using the new refined higher-order analysis model

Cited by 24 publications

References 61 publications

Free vibration optimization of a sandwich structure with a hybrid composite grid core

Free vibration optimization of a sandwich structure with a hybrid composite grid core

Programmable self-folding of trilayer and bilayer-hinge structures by time-dependent swelling of tough hydrogels

New HSDT for free vibration analysis of elastically supported porous bidirectional functionally graded sandwich plate using collocation method

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