Nonlinear vibration and dynamic response of imperfect eccentrically stiffened shear deformable sandwich plate with functionally graded material in thermal environment

Duc, Nguyen Dinh; Cong, Pham Hong; Ngo, Tuan; Tran, Phuong; Anh, Vu Minh; Quang, Vu Dinh

doi:10.1177/1099636215602142

Cited by 31 publications

(15 citation statements)

References 20 publications

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“…Honeycomb plate is one kind of lightweight and high-strength structures [1–3], which was first used in the aerospace industry [4]. Nowadays, honeycomb plates are commonly applied in many fields not only for building walls, such as curtain walls [5,6] and external insulation walls [7–10], but also in foundation slabs and seismic reduction devices [11–13]. They can also be used to fabricate high-speed machine worktables [14].…”

Section: Introductionmentioning

confidence: 99%

Shear mechanical properties of the core structure of biomimetic fully integrated honeycomb plates

Tuo

Chen

et al. 2018

Jnl of Sandwich Structures & Materials

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In the present study, the shear failure mode and mechanical properties of the core structure of biomimetic fully integrated honeycomb plates with sealing edges were investigated experimentally and through the finite element method. The findings are as follows: (1) the failure mode of the sealing edges and honeycomb walls perpendicular to the shear direction is mainly debonding between the fiber and matrix, whereas fiber breakage, debonding between the fiber and matrix and exfoliation of the resin matrix occur in the sealing edges parallel to the shear direction. Meanwhile, the reasonableness and feasibility of the double shear testing apparatus designed in this study were verified, thus confirming the results of research are reliable and valid. (2) Shear failure of the core structure of fully integrated honeycomb plates is mainly fiber debonding appearing in the middle surface of the core structure, which is a failure of the material interface. Stripping failure in the joint interface of the core layer and upper and lower plates does not occur, which indicates that the biological structure possesses excellent integral mechanical properties. (3) The sealing edges parallel to the shear direction and the honeycomb walls that are oriented 30 degrees to the shear direction are the first to fail, followed by the sealing edges and honeycomb walls perpendicular to the shear direction, which is consistent with the microscopic failure phenomenon observed in both directions. To prevent failure at the material interface, the fully integrated honeycomb plates manufactured in this experiment require further improvements. Thus, countermeasures are proposed, such as pre-treating the fiber surface. These findings will specify future research directions to perfect fully integrated honeycomb plates and improve the shear mechanical properties of core structures.

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Section: Introductionmentioning

confidence: 99%

Shear mechanical properties of the core structure of biomimetic fully integrated honeycomb plates

Tuo

Chen

et al. 2018

Jnl of Sandwich Structures & Materials

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“…In the last three decades, a lot of researchers have focused on the study of damage detection based on vibration methods. [18][19][20][21][22][23] In this study, to detect the presence of ML core defects, a non-destructive damage detection method 24,25 based on vibration responses is analysed. The main objective of this work is to investigate the effect of ML imperfections on the modal dynamic responses of composite sandwich structures with ML core, using a finite element (FE) model implemented in Abaqus/ Standard.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the dynamic frequency responses of damaged micro-lattice core sandwich plates

Braun

Iváñez

Aranda-Ruiz

2019

The Journal of Strain Analysis for Engineering Design

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In this work, a numerical analysis of the dynamic frequency responses of sandwich plates with micro-lattice core is presented. The finite element analysis is implemented in the commercial software Abaqus/Standard, calculating the natural frequencies and eigenmodes of sandwich plates containing defects on the micro-lattice structure. In order to include the presence of defects, an aleatory algorithm is developed in MATLAB. The effect of the damage percentage, cell type, cell size and material on the frequency and modal responses of the sandwich plates is highlighted. Results show that the dynamic frequency response may be useful for analysing practical issues related to non-destructive damage identification of imperfections in the micro-lattice core of sandwich structures.

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“…In recent years, many important studies have been researched about vibration and nonlinear dynamic response of an FGM plate and shell. In the vibration and nonlinear dynamic response of FGM research field, Duc et al [1]; Dung and Nga [2] using the FSDT presented the nonlinear analysis of stability for ES-FGM plate under mechanical and thermal loads; Duc [3] studied the nonlinear dynamic response of FGM plate and shell; Duc et al [4,5] investigated the nonlinear vibration and dynamic response of ES-FGM plate using FSDT [4], TSDT [5]; Alijani and Amabili [6]; Ready and Chin [7]; Ungbhakorn and Wattanasakulpong [8] considered the FGM plate without stiffeners. c 2018 Vietnam Academy of Science and Technology Vibration of cylindrical shell has been mentioned in some studies.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamic response of ES-FGM plate under blast load

Cong¹,

Duc

2018

Vietnam J. Mech.

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The paper studies nonlinear dynamic response of an eccentrically stiffened FGM (ES-FGM) plates resting on the elastic foundations subjected to blast and thermal loads with temperature dependent material properties using the Reddy's higher order shear deformation plate theory, stress function, the Galerkin and the fourth order Runge-Kutta methods. The plates are reinforced by outside stiffeners and both stiffeners and plate are deformed under temperature. The effects of material and geometrical properties, temperature-dependent material properties, elastic foundations and stiffeners on the nonlinear dynamic response of the ES FGM plate under blast and thermal loads in thermal environments are studied and discussed.

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Nonlinear vibration and dynamic response of imperfect eccentrically stiffened shear deformable sandwich plate with functionally graded material in thermal environment

Cited by 31 publications

References 20 publications

Shear mechanical properties of the core structure of biomimetic fully integrated honeycomb plates

Shear mechanical properties of the core structure of biomimetic fully integrated honeycomb plates

Numerical analysis of the dynamic frequency responses of damaged micro-lattice core sandwich plates

Nonlinear dynamic response of ES-FGM plate under blast load

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