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Journal articles on the topic 'Laminated composite and sandwich plates and shell'

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Published: 14 March 2023

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1

Kumar, Pavan, and CV Srinivasa. "On buckling and free vibration studies of sandwich plates and cylindrical shells: A review." Journal of Thermoplastic Composite Materials 33, no. 5 (November 11, 2018): 673–724. http://dx.doi.org/10.1177/0892705718809810.

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Many review articles were published on free vibration and buckling of laminated composites, sandwich plates, and shells. The present article reviews the literature on the buckling and free vibration analysis of shear deformable isotropic and laminated composite sandwich plates and shells using various methods available for plates in the past few decades. Various theories, finite element modeling, and experimentations have been reported for the analysis of sandwich plates and shells. Few papers on functionally graded material plates, plates with smart skin (electrorheological, magnetorheological, and piezoelectric), and also viscoelastic materials were also reviewed. The scope for future research on sandwich plates and shells was also accessed.

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2

Dong, S. B., and C. K. Chun. "Shear Constitutive Relations for Laminated Anisotropic Shells and Plates: Part I—Methodology." Journal of Applied Mechanics 59, no. 2 (June 1, 1992): 372–79. http://dx.doi.org/10.1115/1.2899530.

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Shear constitutive relations of a first-order shear deformation theory for laminated anisotropic shells and plates are formulated following Mindlin’s procedure for homogeneous isotropic plates. Because thickness-shear motions for laminated anisotropic thickness profiles may not be polarized in planes normal to the reference surface, the concept of generalized principal shear planes is needed. These planes are established by least-squares minimization of the out-of-plane motions of infinitely long thickness-shear waves based on an elasticity analysis of the profile. Typical shear rigidities for a variety of laminated composite and sandwich profiles are given. In a companion paper, the efficacy of this form of shear constitutive relations in predicting the response of a class of laminated composite and sandwich cylindrical shells is demonstrated.

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3

Brischetto, Salvatore. "Analysis of natural fibre composites for aerospace structures." Aircraft Engineering and Aerospace Technology 90, no. 9 (November 14, 2018): 1372–84. http://dx.doi.org/10.1108/aeat-06-2017-0152.

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Purpose The main idea is the comparison between composites including natural fibres (such as the linoleum fibres) and typical composites including carbon fibres or glass fibres. The comparison is proposed for different structures (plates, cylinders, cylindrical and spherical shells), lamination sequences (cross-ply laminates and sandwiches with composite skins) and thickness ratios. The purpose of this paper is to understand if linoleum fibres could be useful for some specific aerospace applications. Design/methodology/approach A general exact three-dimensional shell model is used for the static analysis of the proposed structures to obtain displacements and stresses through the thickness. The shell model is based on a layer-wise approach and the differential equations of equilibrium are solved by means of the exponential matrix method. Findings In qualitative terms, composites including linoleum fibres have a mechanical behaviour similar to composites including glass or carbon fibres. In terms of stress and displacement values, composites including linoleum fibres can be used in aerospace applications with limited loads. They are comparable with composites including glass fibres. In general, they are not competitive with respect to composites including carbon fibres. Such conclusions have been verified for different structure geometries, lamination sequences and thickness ratios. Originality/value The proposed general exact 3D shell model allows the analysis of different geometries (plates and shells), materials and laminations in a unified manner using the differential equilibrium equations written in general orthogonal curvilinear coordinates. These equations written for spherical shells degenerate in those for cylinders, cylindrical shell panels and plates by means of opportune considerations about the radii of curvature. The proposed shell model allows an exhaustive comparison between different laminated and sandwich composite structures considering the typical zigzag form of displacements and the correct imposition of compatibility conditions for displacements and equilibrium conditions for transverse stresses.

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4

Chun, C. K., and S. B. Dong. "Shear Constitutive Relations for Laminated Anisotropic Shells and Plates: Part II—Vibrations of Composite Cylinders." Journal of Applied Mechanics 59, no. 2 (June 1, 1992): 380–89. http://dx.doi.org/10.1115/1.2899531.

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In Part I of this paper, a system of shear constitutive relations was proposed for a first-order shear deformation theory of laminated anisotropic plates and shells. For laminated anisotropic structures, these shear constitutive equations involved the concept of generalized shear planes. Herein, an extensive parametric study is presented to assess the modeling capability of these shear constitutive relations in a class of laminated composite and sandwich cylinders. Classical theory results are also given in order to fully understand the influence of anisotropy on the accuracy and ranges of validity of both first-order shear deformation theory and classical theory. It is seen that the proposed system of shear constitutive relations provides highly accurate frequency results over the range of anisotropy considered.

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5

Librescu, L., W. Lin, M. DiSciuva, and U. Icardi. "Postbuckling of laminated composite and sandwich plates and shells: On the significance of the fulfillment of static interlayer continuity conditions." Computer Methods in Applied Mechanics and Engineering 148, no. 1-2 (August 1997): 165–86. http://dx.doi.org/10.1016/s0045-7825(97)00020-0.

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6

Mantari, J. L., A. S. Oktem, and C. Guedes Soares. "Static and dynamic analysis of laminated composite and sandwich plates and shells by using a new higher-order shear deformation theory." Composite Structures 94, no. 1 (December 2011): 37–49. http://dx.doi.org/10.1016/j.compstruct.2011.07.020.

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7

Sandeep, S. H., and C. V. Srinivasa. "Hybrid Sandwich Panels: A Review." International Journal of Applied Mechanics and Engineering 25, no. 3 (September 1, 2020): 64–85. http://dx.doi.org/10.2478/ijame-2020-0035.

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AbstractA high specific stiffness, high specific strength, and tailoring the properties for specific application have attracted the attention of the researchers to work in the field of laminated composites and Sandwich structures. Rapid use of these laminated composites and Sandwich structures necessitated the development of new theories that suitable for the bending, buckling and vibration analysis. Many articles were published on free vibration of beams, plates, shells laminated composites and sandwich structures. In this article, a review on free vibration analysis of shear deformable isotropic beams, plates, shells, laminated composites and sandwich structures based on various theories and the exact solution is presented. In addition to this, the literature on finite element modeling of beams, plates, shells laminated composites and sandwich structures based on classical and refined theories is also reviewed. The present article is an attempt to review the available literature, made in the past few decades on free flexural vibration response of Fiber Metal laminated Composites and Sandwich panels using different analytical models, numerical techniques, and experimental methods.

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8

Kim, Chun-Gon, and Eui-Jin Jun. "Impact Resistance of Composite Laminated Sandwich Plates." Journal of Composite Materials 26, no. 15 (December 1992): 2247–61. http://dx.doi.org/10.1177/002199839202601504.

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9

Muc, Aleksander, Justyna Flis, and Marcin Augustyn. "Optimal Design of Plated/Shell Structures under Flutter Constraints—A Literature Review." Materials 12, no. 24 (December 15, 2019): 4215. http://dx.doi.org/10.3390/ma12244215.

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Aeroelastic optimization has become an indispensable component in the evaluation of divergence and flutter characteristics for plated/shell structures. The present paper intends to review the fundamental trends and dominant approaches in the optimal design of engineering constructions. A special attention is focused on the formulation of objective functions/functional and the definition of physical (material) variables, particularly in view of composite materials understood in the broader sense as not only multilayered laminates but also as sandwich structures, nanocomposites, functionally graded materials, and materials with piezoelectric actuators/sensors. Moreover, various original aspects of optimization problems of composite structures are demonstrated, discussed, and reviewed in depth.

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10

Anish and Ajay Kumar. "Ultimate Strength Analysis of Laminated Composite Sandwich Plates." Structures 14 (June 2018): 95–110. http://dx.doi.org/10.1016/j.istruc.2018.02.004.

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11

Sarangi, S. K., and B. Basa. "Nonlinear finite element analysis of smart laminated composite sandwich plates." International Journal of Structural Stability and Dynamics 14, no. 03 (February 16, 2014): 1350075. http://dx.doi.org/10.1142/s0219455413500752.

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This paper deals with the nonlinear dynamic analysis of smart laminated composite sandwich plates. A three dimensional energy based finite element (FE) model has been developed for the composite sandwich plates integrated with the patches of active constrained layer damping (ACLD) treatment. Von Kármán type nonlinear strain–displacement relations and the first-order shear deformation theory (FSDT) are adopted individually for each layer of the sandwich plate in developing the FE model. The constraining layer of the ACLD treatment is considered to be made of active fiber composite (AFC) material. The Golla–Hughes–McTavish (GHM) method is used to model the constrained viscoelastic layer of the ACLD treatment in the time domain. Sandwich plates with symmetric and antisymmetric laminated faces separated by HEREX core are considered for evaluation of the numerical results. The numerical results indicate that the ACLD patches significantly improve the damping characteristics of the composite sandwich plates for suppressing their geometrically nonlinear transient vibrations. The effect of variation of piezoelectric fiber orientation angle in the AFC material on the control authority of the ACLD patches is also investigated.

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12

Singh, Sandeep, Jeeoot Singh, and Karunesh Kumar Shula. "Buckling of Laminated Composite and Sandwich Plates Using Radial Basis Function Collocations." International Journal of Structural Stability and Dynamics 15, no. 01 (January 2015): 1540002. http://dx.doi.org/10.1142/s0219455415400027.

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In this paper, buckling analysis of isotropic, orthotropic, laminated composite and sandwich plates utilizing trigonometric shear deformation theory and meshless method based on the finite point formulation using thin plate, polynomial and inverse multiquadric radial basis function is presented. The convergence of the present method is studied for isotropic and laminated composite plates for different radial basis functions with optimal value of shape parameter. Numerical examples of laminated and sandwich plates subjected to various types of in-plane loads are solved to demonstrate accuracy and applicability of present method. Several new results for variety of composite and sandwich plates are presented. The present results are observed to be in good agreement with those available in literature. The effects of orthotropy ratio of material, span to thickness ratio, number of layers, core thickness and lamination scheme on the critical load of plates are also presented.

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13

Vemuluri, Ramesh Babu, Vasudevan Rajamohan, and Ananda Babu Arumugam. "Dynamic characterization of tapered laminated composite sandwich plates partially treated with magnetorheological elastomer." Journal of Sandwich Structures & Materials 20, no. 3 (June 3, 2016): 308–50. http://dx.doi.org/10.1177/1099636216652573.

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This study investigates the dynamic performance of the partially treated magnetorheological elastomer tapered composite sandwich plates. Various partially treated tapered magnetorheological elastomer laminated composite sandwich plate models are formulated by dropping-off the plies longitudinally in top and bottom composite face layers to yield tapered plates as the face layers. The uniform rubber and magnetorheological elastomer materials are considered as the core layer. The governing differential equations of motion of the various partially treated magnetorheological elastomer tapered composite sandwich plate configurations are derived using classical laminated plate theory and solved numerically. Further, silicon-based magnetorheological elastomer and natural rubber are being fabricated and tested to identify the various mechanical properties. The effectiveness of the developed finite element formulation is demonstrated by comparing the results obtained with experimental tests and available literature. Also, various partially treated magnetorheological elastomer tapered laminated composite sandwich plates are considered to the study the effect of location and size of magnetorheological elastomer segment on various dynamic properties under various boundary conditions. The effects of magnetic field on the variation of natural frequencies and loss factors of the various partially treated magnetorheological elastomer tapered laminated composite sandwich plate configurations are analysed at different boundary conditions. Also, the effect of taper angle of top and bottom layers, aspect ratio, ply orientations on the natural frequencies of different configurations are analysed. Further, the transverse vibration responses of three different partially treated magnetorheological elastomer tapered laminated composite sandwich plate configurations under harmonic excitation are analysed at various magnetic fields. This analysis suggests that the location and size of the magnetorheological elastomer segments strongly influence the natural frequency, loss factor and transverse displacements of the partially treated magnetorheological elastomer tapered laminated composite sandwich plates apart from the intensities of the applied magnetic field. This shows the applicability of partial treatment to critical components of a large structure to achieve a more efficient and compact vibration control mechanism with variable damping.

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14

Hachemi, Mohammed. "Vibration analysis of variable stiffness laminated composite sandwich plates." Mechanics of Advanced Materials and Structures 27, no. 19 (January 25, 2019): 1687–700. http://dx.doi.org/10.1080/15376494.2018.1524951.

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15

Sahoo, Rosalin, and B. N. Singh. "Assessment of dynamic instability of laminated composite-sandwich plates." Aerospace Science and Technology 81 (October 2018): 41–52. http://dx.doi.org/10.1016/j.ast.2018.07.041.

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16

Manoharan, R., R. Vasudevan, and P. Edwin Sudhagar. "Semi-Active Vibration Control of Laminated Composite Sandwich Plate – An Experimental Study." Archive of Mechanical Engineering 63, no. 3 (September 1, 2016): 367–77. http://dx.doi.org/10.1515/meceng-2016-0021.

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Abstract In this study, the vibration analysis of fully and partially treated laminated composite Magnetorheological (MR) fluid sandwich plates has been investigated experimentally. The natural frequencies of fully and partially treated laminated composite MR fluid sandwich plates have been measured at various magnetic field intensities under two different boundary conditions. The variations of natural frequencies with applied magnetic field, boundary conditions and location of MR fluid pocket have been explored. Further, a comparison of natural frequencies of fully and partially treated MR fluid sandwich structure has been made at various magnetic field intensities.

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17

Tu, Tran Minh. "Static analysis of laminated and sandwich composite plates based on simple refined higher-order displacement theory." Vietnam Journal of Mechanics 32, no. 2 (July 1, 2010): 95–106. http://dx.doi.org/10.15625/0866-7136/32/2/309.

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A simple refined higher-order displacement theory is used for the static analysis of laminated and sandwich plates. Both analytical and finite element solutions are developed. Numerical examples of laminated and sandwich plates are given for different thickness ratios, length-to-thickness ratios to illustrate the accuracy of the present formulation by comparing the present results with results already available in the literature.

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18

Kovács, György, and József Farkas. "Optimal design of a composite sandwich structure." Science and Engineering of Composite Materials 23, no. 2 (March 1, 2016): 237–43. http://dx.doi.org/10.1515/secm-2014-0186.

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AbstractThis study shows the optimization method for a new complex structural model: laminated carbon fiber-reinforced plastic (CFRP) deck plates with polystyrene foam (EPS) inner core. The structure is designed for both minimal cost and minimal weight, taking into consideration the design constraints as follows: maximum deflection of the total structure, stress in the composite plates, stress in the polystyrene foam, eigenfrequency of the structure, thermal insulation of the structure, and size constraints for the design variables.

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19

Wang, Yu, Guangyu Shi, and Xiaodan Wang. "Displacement and stress analysis of laminated composite plates using an eight-node quasi-conforming solid-shell element." Curved and Layered Structures 4, no. 1 (January 26, 2017): 8–20. http://dx.doi.org/10.1515/cls-2017-0002.

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Abstract This paper presents the efficient modeling and analysis of laminated composite plates using an eightnode quasi-conforming solid-shell element, named as QCSS8. The present element QCSS8 is not only lockingfree, but highly computational efficiency as it possesses the explicit element stiffness matrix. All the six components of stresses can be evaluated directly by QCSS8 in terms of the 3-D constitutive equations and the appropriately assumed element strain field. Several typical numerical examples of laminated plates are solved to validate QCSS8, and the resulting values are compared with analytical solutions and the numerical results of solid/solidshell elements of commercial codes computed by the present authors in which fine meshes were used. The numerical results show that QCSS8 can give accurate displacements and stresses of laminated composite plates even with coarse meshes. Furthermore, QCSS8 yields also accurate transverse normal strain which is very important for the evaluation of interlaminar stresses in laminated plates. Since each lamina of laminated composite plates can be modeled naturally by one or a few layers of solidshell elements and a large aspect ratio of element edge to thickness is allowed in solid-shell elements, the present solid-shell element QCSS8 is extremely appropriate for the modeling of laminated composite plates.

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20

Taylor, T. W., and A. H. Nayfeh. "Damping Characteristics of Laminated Thick Plates." Journal of Applied Mechanics 64, no. 1 (March 1, 1997): 132–38. http://dx.doi.org/10.1115/1.2787263.

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We develop the analysis for the exact three-dimensional viscoelastic solution for simply supported, thick multilayered composite plate strips. Each layer is assumed to possess monoclinic or higher material symmetry and to be perfectly bonded to adjacent layers. The damping capacity, or loss factor, of the composite plate is derived using energy principles, allowing analysis of arbitrary through-the-thickness geometry for the composite plate. The damping characteristics of the composite plate, as well as its natural modes of vibration, are obtained with the aid of the matrix transfer technique. The matrix transfer method simplifies the requisite analytical developments as well as speeding the numerical calculations. While our analysis treats general material anisotropy and arbitrary through-the-thickness geometry, we examine, as special cases of our analysis, constrained layer damping treatments and sandwich plates. We compare our solution with previous well-known solutions that rely on complex bending modulus formulations and isotropic materials in simple layered treatments. The modal damping capacity of the composite plate is investigated as a function of both frequency of vibration and as a function of material damping modulus.

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21

Lee, C. R., S. J. Sun, and T. Y. Kam. "System Parameters Evaluation of Flexibly Supported Laminated Composite Sandwich Plates." AIAA Journal 45, no. 9 (September 2007): 2312–22. http://dx.doi.org/10.2514/1.23598.

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22

Xiaohui, Ren, Wu Zhen, and Ji Bin. "A refined sinusoidal theory for laminated composite and sandwich plates." Mechanics of Advanced Materials and Structures 27, no. 23 (December 27, 2018): 2013–25. http://dx.doi.org/10.1080/15376494.2018.1538469.

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23

Leissa, Arthur W. "A Review of Laminated Composite Plate Buckling." Applied Mechanics Reviews 40, no. 5 (May 1, 1987): 575–91. http://dx.doi.org/10.1115/1.3149534.

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A brief overview is presented of considerations involved in the buckling of composite plates made of laminae having continuous, parallel fibers. Such plates are governed by orthotropic or anisotropic plate buckling theory for laminates which are symmetrically stacked with respect to the plate midplane. Unsymmetric laminates require a more complicated theory with bending-stretching coupling. Additional complicating factors are considered, including: interior holes, shear deformation, sandwich construction involving other materials, local effects, nonlinear stress-strain relationships, hygrothermal effects, and external stiffeners. Postbuckling behavior and the effects of initial imperfections are also described. Some representative results from the extensive literature (352 references) are included to aid in describing the various effects.

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24

Hoseinzadeh, Mohammad, and Jalil Rezaeepazhand. "Dynamic stability enhancement of laminated composite sandwich plates using smart elastomer layer." Journal of Sandwich Structures & Materials 22, no. 8 (December 17, 2018): 2796–817. http://dx.doi.org/10.1177/1099636218819158.

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The dynamic stability of composite sandwich plates with a smart elastomer layer subjected to an axial periodic load is investigated. A finite element model of the composite sandwich plate with Magnetorheological elastomer (MRE) core is developed. A MRE layer, which its mechanical properties change with the applied magnetic field, is used as a damping layer to improve the stability of the structure. Due to the intrinsic characteristics of the MREs, these materials commonly operate in their pre-yield region. In this region, complex shear modulus is used for these materials. The effect of different parameters such as stacking sequences, boundary conditions, geometry of the sandwich plate, thickness and partial activation of the MRE layer on the damping treatment and stability boundaries is investigated. The presented results show that the application of an MRE layer as a core in the composite sandwich plate changes the stability region of the structure. Therefore, the instability boundaries can be manipulated to achieve the desired dynamic response of the structure.

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25

Kumar, Deepak, Vinayak Kallannavar, Subhaschandra Kattimani, and B. Rajendra Prasad Reddy. "Dynamic analysis of laminated composite sandwich plates with a circular hole." IOP Conference Series: Materials Science and Engineering 1136, no. 1 (June 1, 2021): 012050. http://dx.doi.org/10.1088/1757-899x/1136/1/012050.

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26

Park, T., S. Y. Lee, J. W. Seo, and G. Z. Voyiadjis. "Structural dynamic behavior of skew sandwich plates with laminated composite faces." Composites Part B: Engineering 39, no. 2 (March 2008): 316–26. http://dx.doi.org/10.1016/j.compositesb.2007.01.003.

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27

Kim, Jun-Sik, Jinho Oh, and Maenghyo Cho. "Efficient analysis of laminated composite and sandwich plates with interfacial imperfections." Composites Part B: Engineering 42, no. 5 (July 2011): 1066–75. http://dx.doi.org/10.1016/j.compositesb.2011.03.020.

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28

Babu, V. Ramesh, and R. Vasudevan. "Dynamic analysis of tapered laminated composite magnetorheological elastomer (MRE) sandwich plates." Smart Materials and Structures 25, no. 3 (February 9, 2016): 035006. http://dx.doi.org/10.1088/0964-1726/25/3/035006.

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29

Zenkour, AM, and AF Radwan. "Free vibration analysis of multilayered composite and soft core sandwich plates resting on Winkler–Pasternak foundations." Journal of Sandwich Structures & Materials 20, no. 2 (June 12, 2016): 169–90. http://dx.doi.org/10.1177/1099636216644863.

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Free vibration of laminated composite and soft core sandwich plates resting on Winkler–Pasternak foundations using four-variable refined plate theory are presented. The theory accounts for the hyperbolic distribution of the transverse shear strains through the plate thickness, and satisfies the zero traction boundary conditions on the surfaces of the plate without using shear correction factors. Equations of motion are derived from the dynamic version of the principle of virtual work. Navier technique is employed to obtain the closed-form solutions of antisymmetric cross-ply, angle-ply, and soft core laminates or soft core sandwich plates resting on elastic foundations. Numerical results obtained using present theory are compared with three-dimensional elasticity solutions and those computed using the first-order and the other higher-order theories. It can be concluded that the proposed theory is not only accurate, but also efficient in predicting the natural frequencies of laminated composite and soft core sandwich plates resting on Winkler–Pasternak foundations.

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30

Nayak, A. K., S. S. J. Moy, and R. A. Shenoi. "Quadrilateral finite elements for multilayer sandwich plates." Journal of Strain Analysis for Engineering Design 38, no. 5 (July 1, 2003): 377–92. http://dx.doi.org/10.1243/03093240360713441.

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The bending behaviour of isotropic and laminated composite and sandwich plates has been analysed using two new C° assumed strain quadrilateral finite element formulations based on a refined form of Reddy's higher-order theory. The assumed strain approach ensures that there are no parasitic spurious zero energy modes and no shear locking. The element performances are evaluated on some standard plate tests involving closed-form solutions and experimental results. All results indicate that the present elements have satisfactory convergence properties, accuracy in the results and freedom from any major defects.

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31

Kumar, Dhotre Pavan, and Chikkol V. Srinivasa. "Modal Characterization of Sandwich Skew Plates." Acta Mechanica et Automatica 15, no. 3 (September 1, 2021): 143–53. http://dx.doi.org/10.2478/ama-2021-0019.

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Abstract The current work focuses on the experimental and finite element free vibration studies of laminated composite sandwich skew plates. The comparison was made between the experimental values obtained by the Fast Fourier transform (FFT) analyzer and a finite element solution obtained from CQUAD8 finite element of The MacNeal-Schwendler Corporation (MSC) / NASA STRucture Analysis (NASTRAN) software. The influence of parameters such as aspect ratio (AR) (a/b), skew angle (α), edge condition, laminate stacking sequence, and fiber orientation angle (θ°) on the natural frequencies of sandwich skew plates was studied. The values obtained by both the finite element and experiment approaches are in good agreement. The natural frequencies increase with an increase in the skew angle for all given ARs.

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32

Kong, Cheol Won, Se Won Eun, Jae Sung Park, Ho Sung Lee, Young Soon Jang, Yeong Moo Yi, and Gwang Rae Cho. "The Effect of a Honeycomb Core on the Mechanical Properties of Composite Sandwich Plates." Key Engineering Materials 297-300 (November 2005): 2752–57. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.2752.

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When comparing composite sandwich analysis with an exact solution, the results of finite element modeling with an ANSYS shell 91 element agreed well with the exact solution. The practical applications of the shell 91 element are demonstrated with a four-point bend test conducted on sandwich beam specimens. The specimens comprised carbon/epoxy fabric face sheets and a honeycomb core. Two kinds of honeycomb cores were used to fabricate the composite sandwich specimens: an aluminum one and a glass/phenolic one. The predictions with the shell 91 element were also agreed well with the experimental results. A variety of tests was conducted; namely, a long beam flexural test, a short beam shear test, a flatwise tensile test, a flatwise compression test and an edge compression test. The sandwich plate with the aluminum honeycomb core had a specific bending stiffness that was 1.7 to 2.0 times higher than that of the sandwich plate with the glass/ phenolic honeycomb core.

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33

Lee, C. R., T. Y. Kam, and S. J. Sun. "Free-Vibration Analysis and Material Constants Identification of Laminated Composite Sandwich Plates." Journal of Engineering Mechanics 133, no. 8 (August 2007): 874–86. http://dx.doi.org/10.1061/(asce)0733-9399(2007)133:8(874).

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34

Solanki, Manoj Kumar, Sabin Kumar Mishra, K. K. Shukla, and Jeeoot Singh. "Nonlinear Free Vibration of Laminated Composite and Sandwich Plates Using Multiquadric Collocations." Materials Today: Proceedings 2, no. 4-5 (2015): 3049–55. http://dx.doi.org/10.1016/j.matpr.2015.07.210.

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35

Ji, Hyo-Seon. "Bending Analysis of Anisotropic Sandwich Plates with Multi-layered Laminated Composite faces." Journal of the Korean Society for Advanced Composite Structures 3, no. 4 (December 31, 2012): 17–26. http://dx.doi.org/10.11004/kosacs.2012.3.4.017.

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36

Naik, Nitin S., and Atteshamuddin S. Sayyad. "Analysis of Laminated Plates Subjected to Mechanical and Hygrothermal Environmental Loads Using Fifth-Order Shear and Normal Deformation Theory." International Journal of Applied Mechanics 12, no. 03 (April 2020): 2050028. http://dx.doi.org/10.1142/s1758825120500283.

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Bending analysis of laminated composite plates subjected to mechanical and hygrothermal environmental loading is presented in this paper using fifth-order shear and normal deformation theory (FOSNDT). This theory uses polynomial-type shape function in the displacement field up to fifth-order. This theory considers the effect of transverse normal deformations ([Formula: see text]). Simply supported laminated composite and sandwich plates are analyzed using Navier’s solution techniques. The results obtained using this theory are compared with the results available in the literature wherever possible. However, many results are presented for the first time in this paper.

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37

Kwon, Y. W. "Analysis of Laminated and Sandwich Composite Structures Using Solid-like Shell Elements." Applied Composite Materials 20, no. 4 (June 17, 2012): 355–73. http://dx.doi.org/10.1007/s10443-012-9273-8.

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38

Grover, Neeraj, Bhrigu N. Singh, and Dipak K. Maiti. "Free vibration and buckling characteristics of laminated composite and sandwich plates implementing a secant function based shear deformation theory." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 3 (June 5, 2014): 391–406. http://dx.doi.org/10.1177/0954406214537799.

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A generalized finite element modeling of recently developed secant function based shear deformation theory is formulated and implemented for free vibration and buckling characteristics of laminated-composite and sandwich plates. The shear deformation is expressed in terms of a secant function of thickness coordinate. The theory inherently satisfies the zero transverse shear conditions on top and bottom surfaces of the plate. An eight-noded C0 continuous element is chosen by an adequate choice of nodal field variables. The governing equations are obtained for the free vibration and buckling responses of laminated-composite and sandwich plates. Intensive numerical experiments are conducted to investigate the influence of span-thickness ratio, boundary conditions, etc. on the free vibration and buckling behavior. The comparison of present results with the published results indicates the performance and range of applicability of the present theory in the framework of finite element analysis.

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Tahouneh, Vahid. "An Elasticity Solution for Vibration Analysis of Laminated Plates with Functionally Graded Core Reinforced by Multi-walled Carbon Nanotubes." Periodica Polytechnica Mechanical Engineering 61, no. 4 (September 20, 2017): 309. http://dx.doi.org/10.3311/ppme.11254.

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In the present work, vibration characteristics of functionally graded (FG) sandwich rectangular plates reinforced by multiwalled carbon nanotubes (MWCNTs) resting on Pasternak foundation are presented. The response of the elastic medium is formulated by the Winkler/Pasternak model. Modified Halpin-Tsai equation is used to evaluate the Young’s modulus of the MWCNT/epoxy composite samples by the incorporation of an orientation as well as an exponential shape factor in the equation. The mass density and Poisson’s ratio of the MWCNT/phenolic composite are considered based on the rule of mixtures. The proposed sandwich rectangular plates have two opposite edges simply supported, while all possible combinations of free, simply supported and clamped boundary conditions are applied to the other two edges. The effects of two-parameter elastic foundation modulus, geometrical and material parameters together with the boundary conditions on the frequency parameters of the sandwich plates are investigated.

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SEKINE, Hideki, Hiroshi SHIRAHATA, and Mariko MATSUDA. "Vibration Characteristics of Composite Sandwich Plates and Layup Optimization of Their Laminated FRP Composite Faces." Journal of the Japan Society for Composite Materials 30, no. 6 (2004): 227–35. http://dx.doi.org/10.6089/jscm.30.227.

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Sekine, Hideki, Hiroshi Shirahata, and Mariko Matsuda. "Vibration characteristics of composite sandwich plates and layup optimization of their laminated FRP composite faces." Advanced Composite Materials 14, no. 2 (January 2005): 181–97. http://dx.doi.org/10.1163/1568551053970627.

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Hachemi, M., and SM Hamza-Cherif. "Free vibration analysis of composite laminated and sandwich plate with circular cutout." Journal of Sandwich Structures & Materials 22, no. 8 (November 24, 2018): 2655–91. http://dx.doi.org/10.1177/1099636218811393.

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This paper presents the free vibration analysis of a composite laminated and sandwich square plate with circular cutout. The problem formulation is based on the higher order shear deformation plate theory HDST C0 coupled with a curved quadrilateral p-element. The elements of the stiffness and mass matrices are calculated analytically. The curved edges are accurately represented using the blending function method. A calculation program is developed to determine the fundamental frequencies for different physical and mechanical parameters such as the cutout size and location, plate thickness, fiber orientation angle and boundary conditions. The results obtained show a good agreement with the available solutions in the literature. New results for the fundamentals frequencies of composite laminated and sandwich plates with circular cutout are presented.

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Serdoun, SMN, and SM Hamza Cherif. "Vibration analysis of composite and sandwich plates reinforced with parabolic fibers using an alternative hierarchical finite element method." Journal of Sandwich Structures & Materials 22, no. 4 (June 4, 2018): 1074–110. http://dx.doi.org/10.1177/1099636218780542.

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This paper presents a numerical method for determining natural frequencies and vibration modes of sandwich thick plates reinforced with parabolic fibers. The approach is based on the p-version finite element method with hierarchical trigonometric functions and Reddy’s high order shear deformation theory. The equations of motion of free vibration of thick composite laminated and sandwich plates are obtained based on Hamilton’s principle. A very fast convergence is obtained by increasing the number of hierarchical shape functions. The accuracy of the present method is established by a comparisons made between the present results and published results. The effects of boundary conditions, thickness ratio, material properties, and orientation angle on natural frequencies and normalized cross-sections of mode shape for sandwich plates reinforced with parabolic fibers are studied and investigated.

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Hsu, Yao. "Numerical Analysis on Failure Behavior of Composite Sandwich Plate." Applied Mechanics and Materials 284-287 (January 2013): 178–82. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.178.

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The Composite sandwich plate is made of two laminated face-sheets and one core material. Since such a kind of structure has many advantages, they have been widely used in structural manufacturing industry. However, when sandwich plates are impacted by transverse loadings, damages that are usually invisible would occur inside the sandwich plate and those damages would potentially reduce the structural safety. Therefore, it is necessary to elucidate the failure mechanism and how they affect the failure behaviors of sandwich structures for safety purpose. To this end, the present study is to investigate the impact failure behaviors of sandwich plates subjected to a rigid spherical impactor. Numerical simulation approach is carried out by finite element method. To predict the initial failure, several failure criteria to face-sheets and core material are proposed. In addition, to further simulate the progressive failure behaviors, a stiffness modification method is proposed and incorporated into the finite element software. The analytical results show that the local failure including fiber breakages, delamination, core cracking and plasticity is the main failure mechanism of cases studied. Furthermore, parametric study is also conducted and discussed in the paper.

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Praveen A, Paul, Vasudevan Rajamohan, Ananda Babu Arumugam, and Arun Tom Mathew. "Vibration analysis of a multifunctional hybrid composite honeycomb sandwich plate." Journal of Sandwich Structures & Materials 22, no. 8 (December 26, 2018): 2818–60. http://dx.doi.org/10.1177/1099636218820764.

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In the present study, the free and forced vibration responses of the composite sandwich plate with carbon nanotube reinforced honeycomb as the core material and laminated composite plates as the top and bottom face sheets are investigated. The governing equations of motion of hybrid composite honeycomb sandwich plates are derived using higher order shear deformation theory and solved numerically using a four-noded rectangular finite element with nine degrees of freedom at each node. Further, various elastic properties of honeycomb core materials with and without reinforcement of carbon nanotube and face materials are evaluated experimentally using the alternative dynamic approach. The effectiveness of the finite element formulation is demonstrated by performing the results evaluated experimentally on a prototype composite sandwich plate with and without carbon nanotube reinforcement in core material. Various parametric studies are performed numerically to study the effects of carbon nanotube wt% in core material, core thickness, ply orientations, and various boundary conditions on the dynamic properties of composite honeycomb sandwich plate. Further, the transverse vibration responses of hybrid composite sandwich plates under harmonic force excitation are analyzed at various wt% of carbon nanotubes and the results are compared with those obtained without addition of carbon nanotubes to demonstrate the effectiveness of carbon nanotube reinforcement in enhancing the stiffness and damping characteristics of the structures. The study provides the guidelines for the designer on enhancing both the stiffness and damping properties of sandwich structures through carbon nanotube reinforcement in core materials.

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Sahoo, Rosalin, Neeraj Grover, and B. N. Singh. "Nonpolynomial Zigzag Theories for Random Static Analysis of Laminated-Composite and Sandwich Plates." AIAA Journal 57, no. 1 (January 2019): 437–47. http://dx.doi.org/10.2514/1.j056519.

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Makhecha, D. P., M. Ganapathi, and B. P. Patel. "Vibration and Damping Analysis of Laminated/Sandwich Composite Plates Using Higher-Order Theory." Journal of Reinforced Plastics and Composites 21, no. 6 (April 2002): 559–75. http://dx.doi.org/10.1177/0731684402021006833.

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Kam, T. Y., F. M. Lai, and T. M. Chao. "Optimum design of laminated composite foam-filled sandwich plates subjected to strength constraint." International Journal of Solids and Structures 36, no. 19 (July 1999): 2865–89. http://dx.doi.org/10.1016/s0020-7683(98)00133-4.

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Mantari, J. L., A. S. Oktem, and C. Guedes Soares. "A new trigonometric shear deformation theory for isotropic, laminated composite and sandwich plates." International Journal of Solids and Structures 49, no. 1 (January 2012): 43–53. http://dx.doi.org/10.1016/j.ijsolstr.2011.09.008.

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Mantari, J. L., A. S. Oktem, and C. Guedes Soares. "A new higher order shear deformation theory for sandwich and composite laminated plates." Composites Part B: Engineering 43, no. 3 (April 2012): 1489–99. http://dx.doi.org/10.1016/j.compositesb.2011.07.017.

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