A Finite Element Model for the Vibration Analysis of Sandwich Beam with Frequency-Dependent Viscoelastic Material Core

Huang, Zhichuan; Wang, Xingguo; Wu, Nanxing; Chu, Fulei; Luo, Jing

doi:10.3390/ma12203390

Cited by 23 publications

(7 citation statements)

References 34 publications

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“…( 14). The test referred to the standard GB/T 1456-2005 "Test Method for Flexural Performance of Sandwich Structures" [23]. In the test, the indenter adopted the control method of displacement loading and force unloading.…”

Section: Platform Constructionmentioning

confidence: 99%

Displacement Field Variable Modeling Method for Heterogeneous Materials in Wind Power Blade Core Plates

He¹,

Wen²,

Huang³

et al. 2023

Energy Engineering

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In order to study the mechanical properties of the heterogeneous core plate of the wind turbine blade, a modeling method of the core plate based on displacement field variables is proposed. Firstly, the wind turbine blade core plate was modeled according to the theory of modeling heterogeneous material characteristics. Secondly, the three-point bending finite element model of the wind turbine blade core plate was solved by the display dynamic equation to obtain the deformation pattern and force-deformation relationship of the core plate. Finally, the three-point bending static test was conducted to compare with the finite element analysis. The test results show that: the damage form of the wind turbine blade core plate includes elasticity, yield, and failure stages. The main failure modes are plastic deformation, core material collapse, and panel-core delamination. The failure load measured by the test is 1.59 kN, which is basically consistent with the load-displacement result obtained by the simulation, with a difference of only 1.9%, which verifies the validity and reliability of the model. It provides data references for wind turbine blade structure design.

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Section: Platform Constructionmentioning

confidence: 99%

Displacement Field Variable Modeling Method for Heterogeneous Materials in Wind Power Blade Core Plates

He¹,

Wen²,

Huang³

et al. 2023

Energy Engineering

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“…The identification of the shear modulus for the material of the second type (see relations (10)) according to the results of dynamic tests is implemented by minimizing the error function in the form of the total square deviation between the calculated and experimentally measured [22][23][24][25][26] Eigen frequency values:…”

Section: Identification Of Mr Layer Modulesmentioning

confidence: 99%

Identification of Magnetorheological Layer Properties by Using Refined Plate Theory

et al. 2021

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In this paper, the dynamic characteristics of sandwich plates with external rigid layers and an upper layer with magnetorheological properties (MR) are investigated. An analysis of the effect of the magnetic field on frequency and loss factor is presented. Vibration can be controlled by a magnetic-rheological viscoelastomer (MRVE), when used in sandwich plates. During vibration, MRVE exhibits an inhomogeneous complex module, which is controlled by an applied magnetic field and depends on the oscillation frequency. Using the dynamic equilibrium conditions, physical and kinematic relationships, and the partial differential equations for the conjugate transverse and longitudinal oscillations of a sandwich plate, are derived. This paper presents a new method for stress analysis that provides accurate stress distributions for multilayer plates subject to cylindrical bending. It uses an adaptive method that does not make strict assumptions about the plate model. Based on the depicted theoretical model, the deformations of each layer of the plate are accounted for, including both transverse shear deformations and transverse normal deformations where the thickness is concerned, and nonlinear displacement changes. The magnetorheological (MR) identification of an inner layer is carried out using refined plate theory and sandwich bending tests. Using combined methods, the possibility of determining the MRVE parameters robustly, is examined.

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“…The theoretical modal parameters, the first two natural frequencies and associated loss factors, evaluated by the finite element method, are experimentally verified at 30°C . In the theoretical calculations, the Biot model parameters of the ZN-1 viscoelastic material in Table 7 are taken from reference [33]. The sandwich plate is divided into 10 × 8 elements.…”

Section: Experimental Validation and Comparisonmentioning

confidence: 99%

TheFinite Element Modeling and Experimental Study of Sandwich Plates with Frequency-Dependent Viscoelastic Material Model

Huang

Wang

et al. 2020

Materials

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Athree-layer composite plate element is developed for finite element modeling and vibration analysis of sandwich plate with frequency-dependent viscoelastic material core. The plate element is quadrilateral element bounded by four-node with 7-degree-of-freedom per node. The frequency-dependent characteristics of viscoelastic material parameters are described using the Biot model. The method of identifying the parameters of the Biot model is given. By introducing auxiliary coordinates, the Biot model is combined with the finite element equation of the viscoelastic sandwich plate. Through a series of mathematical transformations, the equation is transformed into a standard second-order steady linear system equation form to simplify the solution process. Finally, the vibration characteristics of the viscoelastic sandwich plate are analyzed and experimentally studied. The results show that the method in this paper is correct and reliable, and it has certain reference and application value for solving similar engineering vibration problems.

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A Finite Element Model for the Vibration Analysis of Sandwich Beam with Frequency-Dependent Viscoelastic Material Core

Cited by 23 publications

References 34 publications

Displacement Field Variable Modeling Method for Heterogeneous Materials in Wind Power Blade Core Plates

Displacement Field Variable Modeling Method for Heterogeneous Materials in Wind Power Blade Core Plates

Identification of Magnetorheological Layer Properties by Using Refined Plate Theory

TheFinite Element Modeling and Experimental Study of Sandwich Plates with Frequency-Dependent Viscoelastic Material Model

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