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Special Issue "Analytical, Numerical and Experimental Methodologies for the Analysis of Multilayered Structures"

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A special issue of Journal of Composites Science (ISSN 2504-477X).

Deadline for manuscript submissions: 31 December 2021.

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Special Issue Editors

Prof. Dr. Salvatore Brischetto
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Guest Editor

Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
Interests: smart structures; composite and FGM materials; multifield problems; thermal and hygroscopic stress analysis; carbon nanotubes; inflatable structures; plate and shell finite elements; 3D and 2D exact and numerical solutions for plate and shell structures; additive manufacturing and UAVs
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Mr. Roberto Torre
E-Mail Website
Guest Editor

Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
Interests: additive manufacturing; UAVs; composite structures and 3D shell models

Special Issue Information

Dear Colleagues,

The proposed Special Issue is aimed at papers concerning analytical, numerical and experimental analyses of multilayer structures with simple or complex geometry (plates, shells, arcs, beams, specific specimens and so on) and produced by means of classical technologies or advanced technologies such as those relating to additive manufacturing. In details, static, dynamic, free vibration, buckling and non-linear analyses of multilayered composite, sandwich, functionally graded, piezoelectric, piezomagnetic, polymeric, nanoreinforced and anisotropic structures can be proposed. Experimental tensile, compressive and bending tests can be developed to validate numerical and analytical models or to opportunely characterize the material properties. Analytical and numerical models can be based on closed-form solutions, finite element models, boundary element models, generalized differential quadrature method, Galerkin and Ritz methods and so on. The analyzed structures can be subjected to several loading types such as mechanical, thermal, hygroscopic, electrical and magnetic ones, and the response can be evaluated in terms of displacements, elastic, thermal and hygroscopic stresses, strains, frequencies, vibration modes, critical loads and so on.

Prof. Dr. Salvatore Brischetto
Mr. Roberto Torre
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Composites Science is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

Composite structures
Sandwich structures
Smart structures embedding piezoelectric and piezomagnetic layers
Multilayered structures
Plates, shells and beams
1D, 2D and 3D numerical and analytical structural models
Finite element method
Boundary element method
Closed-form solutions
Generalized differential quadrature method
Galerkin and Ritz methods
Static, dynamic, free vibration, buckling and non-linear analyses
Functionally graded structures
Nanoreinforced structures
Carbon nanotubes
Thermal stress analysis
Hygroscopic stress analysis
Experimental tensile, compression and bending tests on composite, multilayered or 3D printed structures
Additive manufacturing

Published Papers (3 papers)

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Research

Open AccessArticle

Numerical Modelling of Bond Strength in Overmoulded Thermoplastic Composites

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J. Compos. Sci. 2021, 5(7), 164; https://doi.org/10.3390/jcs5070164 - 23 Jun 2021

Viewed by 449

Abstract

Overmoulding of thermoplastic composites combines the steps of thermoforming and injection moulding in an integrated manufacturing process. The combination of continuous fibre-reinforced thermoplastics with overmoulded polymer enables the manufacturing of highly functionally integrated structures with excellent mechanical properties. When performed as a one-shot process, an economically efficient manufacturing of geometrical complex lightweight parts within short cycle times is possible. However, a major challenge in the part and process design of overmoulded thermoplastic composites (OTC) is the assurance of sufficient bond strength between the composite and the overmoulded polymers. Within the framework of a simulation-based approach, this study aims to develop a methodology for predicting the bond strength in OTC using simulation data and a numerical model formulation of the bonding mechanisms. Therefore, a modelling approach for the determination of the bond strength depending on different process parameters is presented. In order to validate the bond strength model, specimens are manufactured with different process settings and mechanical tests are carried out. Overall, the results of the numerical computation are in good agreement with the experimentally determined bond strength. The proposed modelling approach enables the prediction of the local bond strength in OTC, considering the interface conditions and the processing history. Full article

(This article belongs to the Special Issue Analytical, Numerical and Experimental Methodologies for the Analysis of Multilayered Structures)

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Open AccessArticle

Numerical Simulation of the Forming Process of Veneer Laminates

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J. Compos. Sci. 2021, 5(6), 150; https://doi.org/10.3390/jcs5060150 - 03 Jun 2021

Viewed by 742

Abstract

In automotive manufacturing, laminated veneer sheets are formed to have 3D geometries for the production of trim parts with wood surfaces. Nowadays, investigation of the formability requires extensive tests with prototype tools, due to the brittle, anisotropic and inhomogeneous material behaviors. The present paper provides numerical methods for the simulation of the forming process of veneers with non-woven backings. Therefore, a conventional forming process of an interior trim part surface is carried out experimentally and numerically, using veneer samples with different individual textures originating from the characteristic growth ring structure. Gray scale images of these samples are mapped to finite element models to account for the wood-specific structure. The forming simulation process comprises two steps, where a gravity simulation depicts the initial position of the blank sheets and the closing of the tool induces the material deformation. The virtual forming of the digital twins accurately reproduces the wrinkling behavior observed in experimental studies. Based on the proposed methods, the design process of manufacturing wood trim parts based on tedious prototype tooling can be replaced by a fully virtual forming process taking into account the individual growth-related properties of the veneer structure. Full article

(This article belongs to the Special Issue Analytical, Numerical and Experimental Methodologies for the Analysis of Multilayered Structures)

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Open AccessArticle

Numerical Buckling Analysis of Hybrid Honeycomb Cores for Advanced Helmholtz Resonator Liners

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J. Compos. Sci. 2021, 5(5), 116; https://doi.org/10.3390/jcs5050116 - 23 Apr 2021

Viewed by 414

Abstract

In order to realize novel acoustic liners, honeycomb core structures specially adapted to these applications are required. For this purpose, various design concepts were developed to create a hybrid cell core by combining flexible wall areas based on thermoplastic elastomer films and rigid honeycomb areas made of fiber-reinforced thermoplastics. Within the scope of the presented study, a numerical approach was introduced to analyze the global compressive failure of the hybrid composite core structure, considering local buckling and composite failure according to Puck and Cuntze. Therefore, different geometrical configurations of fiber-reinforced tapes were compared with respect to their deformation as well as their resulting failure behavior by means of a finite element analysis. The resulting compression strength obtained by a linear buckling analysis agrees largely with calculated strengths of the more elaborate application of the failure criteria according to Puck and Cuntze, which were implemented in the framework of a nonlinear buckling analysis. The findings of this study serve as a starting point for the realization of the manufacturing concept, for the design of experimental tests of hybrid composite honeycomb core structures, and for further numerical investigations considering manufacturing as well as material specific aspects. Full article

(This article belongs to the Special Issue Analytical, Numerical and Experimental Methodologies for the Analysis of Multilayered Structures)

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Special Issue "Analytical, Numerical and Experimental Methodologies for the Analysis of Multilayered Structures"

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