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Applied Sciences
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Advanced Theoretical and Computational Methods for Complex Materials and Structures...
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Advanced Theoretical and Computational Methods for Complex Materials and Structures (Volume 2)

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 3965
Related Special Issue: Advanced Theoretical and Computational Methods for Complex Materials and Structures

Special Issue Editors

Dr. Francesco Tornabene

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Guest Editor
Department of Innovation Engineering, University of Salento, 73100 Lecce, Italy
Interests: theory of shells, plates, arches, and beams; generalized differential quadrature; FEM; SFEM; WFEM; IGA; SFIGA; WFIGA; advanced composite materials; functionally graded materials; nanomaterials and nanotechnology
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Rossana Dimitri

E-Mail Website
Guest Editor
Department of Innovation Engineering, University of Salento, 73100 Lecce, Italy
Interests: damage and fracture mechanics; contact mechanics; structural mechanics; solid mechanics; computational mechanics; advanced composite materials; nanomaterials and nanotechnology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The widespread use of composite materials and structures in many fields of engineering and science has favored the development of advanced theoretical and computational methodologies with increased performance. Composite materials are well-known to feature outstanding thermomechanical performance, with a reduced weight, that can affect the overall responses of many structural members (primarily, beams, plates, and shells), from a static and/or dynamic standpoint. Enhanced structures and composite materials feature an internal length scale and non-local behavior, with their static/dynamic and fracturing responses greatly depending on the staking sequence, ply orientation, agglomeration of nanoparticles, volume fractions of the constituents, and porosity level.

Among the most commonly used innovative composites, there are functionally graded materials (FGMs), carbon nanotubes (CNTs), graphene nanoplatelets, metamaterials, and smart constituents, as applied in most smart actuators or piezoelectric sensors. Studies on fiber-reinforced composites, FGMs, CNTs, and magnetostrictive and electrostrictive materials, as well as auxetic materials and angle-tow laminates, are welcome, exploring their static, dynamic, buckling and fracturing responses at different scales.

To this end, classical and nonclassical theories can be proposed together with multiscale approaches, homogenization techniques and different fracturing models. Contributions regarding theoretical, experimental and numerical aspects from scientists working in mathematics and mechanics, involving different industrial applications, are welcome.

Dr. Francesco Tornabene
Prof. Dr. Rossana Dimitri
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 submissions that pass pre-check are 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. Applied Sciences is an international peer-reviewed open access semimonthly 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 2400 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

  • advanced computational methods
  • auxetic materials
  • buckling behavior
  • carbon nanotubes
  • complex materials
  • composite beams, plates and shells
  • constitutive models
  • damage
  • delamination
  • dynamics
  • fracture mechanics
  • functionally graded materials
  • homogenization techniques
  • metamaterials
  • nanostructures
  • smart materials
  • statics
  • theoretical, numerical and experimental strategies

Published Papers (2 papers)

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Research

25 pages, 3840 KiB  
Article
Study on Mechanical Properties of Simply-Supported Composite Beams Considering Creep and Slip
by Qinan Lei, Peng Wang and Hongliang Nan
Appl. Sci. 2023, 13(1), 193; https://0-doi-org.brum.beds.ac.uk/10.3390/app13010193 - 23 Dec 2022
Cited by 1 | Viewed by 1318
Abstract
In the current industry, steel–concrete composite beams are used in large-span bridges and super-high-rise building structures due to their excellent overall performance. Concrete’s creep and slip effects in the combined structure can adversely affect the structure, thus affecting the safe use of bridges [...] Read more.
In the current industry, steel–concrete composite beams are used in large-span bridges and super-high-rise building structures due to their excellent overall performance. Concrete’s creep and slip effects in the combined structure can adversely affect the structure, thus affecting the safe use of bridges and buildings. It is necessary to study the mechanical properties of the combined structure considering creep and slip. In order to further study the mechanical properties of steel–concrete composite beams under creep–sliding coupling, in this study, based on the energy variational method principle, the energy equation of a composite beam considering creep and slip coupling is established. The second-order differential equation of the axial force of steel–concrete composite beams is derived by introducing basic assumptions. The calculation formulas for the axial force, deflection, and slip of simply-supported composite beams under different loads are obtained using different boundary conditions. Then, the creep effect of composite beams is simulated using the creep criterion in the ANSYS finite element software when the concrete material parameters change with time. The results show that a simply-supported composite beam considering both slip and creep will have a significant effect on the structure; the more strongly the studs constrain the concrete slab, the greater the adverse effect of concrete creep on the combined beam. The formula derived in this paper is consistent with the numerical simulation solution and is suitable for different creep and slip conditions. The research results can provide a theoretical basis for the calculation of the axial force, deflection, and slip of combined beams under uniform and concentrated loads in practical engineering considering slip and creep. Full article
(This article belongs to the Special Issue Advanced Theoretical and Computational Methods for Complex Materials and Structures (Volume 2))
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15 pages, 3365 KiB  
Article
Dispersion of Elastic Waves in Functionally Graded CNTs-Reinforced Composite Beams
by Ali Seyfi, Amir Teimouri, Rossana Dimitri and Francesco Tornabene
Appl. Sci. 2022, 12(8), 3852; https://0-doi-org.brum.beds.ac.uk/10.3390/app12083852 - 11 Apr 2022
Cited by 14 | Viewed by 1256
Abstract
This work deals with the wave propagation analysis in functionally graded carbon nanotubes (CNTs)-reinforced composite beams lying on an elastic medium. Despite the large amount of experimental and theoretical studies in the literature on the mechanical behavior of composite structures strengthened with CNTs, [...] Read more.
This work deals with the wave propagation analysis in functionally graded carbon nanotubes (CNTs)-reinforced composite beams lying on an elastic medium. Despite the large amount of experimental and theoretical studies in the literature on the mechanical behavior of composite structures strengthened with CNTs, limited attention has been paid to the effect of an axial graduation of the reinforcing phase on the mechanical response of CNTs-reinforced composite beams. In this paper, CNT fibers are graded across the beam length, according to a power-law function, which expresses a general variation from a linear to parabolic pattern. An Euler-Bernoulli beam theory is considered herein to model the CNTs-reinforced composite structure resting on a Winkler–Pasternak foundation, whose governing equations are derived from the Hamiltonian principle. The theoretical solution of the problem checks for the sensitivity of the mechanical response to different parameters, i.e., the wave number, power index, Winkler and Pasternak coefficients, that could serve for further computational/experimental studies on the same problem, even from a design standpoint. Full article
(This article belongs to the Special Issue Advanced Theoretical and Computational Methods for Complex Materials and Structures (Volume 2))
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