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Special Issue "Mesh-Free and Finite Element-Based Methods for Structural Mechanics Applications"
Full text linkDear Colleagues,
The problem of solving complex engineering problems has been always a major topic in all industrial fields, such as aerospace, civil and mechanical engineering. The use of numerical methods increased exponentially in the last few years due to modern computers in the field of structural mechanics.
Moreover, a wide-range of numerical methods has been presented in the literature for solving such problems. Structural mechanics problems are dealt with using partial differential systems of equations that might be solved by following the two main classes of methods: Domain-decomposition methods or the so-called finite element methods and mesh-free methods where no decomposition is carried out. Both methodologies discretize a partial differential system into a set of algebraic equations that can be easily solved by computer implementation. The aim of the present Special Issue is to present a collection of recent works on these themes and a comparison of the novel advancements of both worlds in structural mechanics applications.
Assist. Prof. Dr. Nicholas Fantuzzi
Guest Edito
21th International Conference on Composite Structures (ICCS21)
No full textIt is well-known that the topic of composite materials affects many engineering fields, such as civil, mechanical, aerospace, automotive and chemical. In the last decades, in fact, a huge number of scientific papers concerning these peculiar constituents has been published. Analogously, the industrial progress has been extremely noticeable.
The study of composite materials, in general, is a challenging activity since the advancements both in the academia and in the industry provide continually new sparks to develop innovative ideas and applications. The communication, the sharing and the exchange of views can surely help the works of many researchers. This aspect represents the main purpose of this Conference, which aims to collect high-level contributions on the development and the application of composite materials.
The establishment of this 21st edition of International Conference on Composite Structures has appeared appropriate to continue what has been begun during the previous editions. ICCS wants to be an occasion for many researchers from each part of the globe to meet and discuss about the recent advancements regarding the use of composite structures, sandwich panels, nanotechnology, bio-composites, delamination and fracture, experimental methods, manufacturing and other countless topics that have filled many sessions during this conference. As a proof of this event, which has taken place in Bologna (Italy), selected plenary and key-note lectures have been collected in the present book.
The conference attracted 350+ delegates from around the world of composites. The plenary lectures were given by, Johannes Michael Sinapius (Technische Universität Braunschweig, Germany), Aurelio Araujo (University of Lisbon, Portugal), Francesco Tornabene (University of Bologna, Italy), Andreas Echtermeyer (NTNU-Norwegian University of Science and Technology, Norway), Raimondo Luciano (University of Cassino and Southern Lazio, Italy).
The Conference Chair: Antonio J.M. Ferreira (University of Porto, Portugal), Francesco Tornabene (University of Bologna, Italy), Nicholas Fantuzzi (University of Bologna, Italy), Erasmo Viola (University of Bologna, Italy).
The Local Organizing Committee: Michele Bacciocchi (University of Bologna, Italy)
Mathematical and Computational Applications
No full textMathematical and Computational Applications (MCA) is devoted to original research in the field of engineering, natural sciences or social sciences where mathematical and/or computational techniques are necessary for solving specific problems. The aim of the journal is to provide a medium by which a wide range of experience can be exchanged among researchers from diverse fields such as engineering (electrical, mechanical, civil, industrial, aeronautical, nuclear etc.), natural sciences (physics, mathematics, chemistry, biology etc.) or social sciences (administrative sciences, economics, political sciences etc.). The papers may be theoretical where mathematics is used in a nontrivial way or computational or combination of both. Each paper submitted will be reviewed and only papers of highest quality that contain original ideas and research will be published. Papers containing only experimental techniques and abstract mathematics without any sign of application are discouraged
Mathematical and Computational Applications
No full textMathematical and Computational Applications (MCA) is devoted to original research in the field of engineering, natural sciences or social sciences where mathematical and/or computational techniques are necessary for solving specific problems. The aim of the journal is to provide a medium by which a wide range of experience can be exchanged among researchers from diverse fields such as engineering (electrical, mechanical, civil, industrial, aeronautical, nuclear etc.), natural sciences (physics, mathematics, chemistry, biology etc.) or social sciences (administrative sciences, economics, political sciences etc.). The papers may be theoretical where mathematics is used in a nontrivial way or computational or combination of both. Each paper submitted will be reviewed and only papers of highest quality that contain original ideas and research will be published. Papers containing only experimental techniques and abstract mathematics without any sign of application are discouraged
“Selected Papers from the ABCM MecSol 2019 Conference Sao Carlos”
No full textThank you for visiting the Latin American Journal of Solids and Structures, LAJSS, a scientific engineering journal.
Researchers all over the world are welcome to submit their papers to LAJSS covering theoretical, numerical and experimental topics in continuum and applied mechanics, in both their linear and non-linear aspects. Interest covers areas like Vibration : Dynamics : Aerospace and Automotive Engineering : Composite Materials : Experimental and Computational Mechanics : Material Modelling : Concrete : Earthquake Eng : Nanomechanics : Ocean Eng. : Optimization : Control : Continuum Mechanics : Waves : Fluid-struc. interaction
Homogenization and Equivalent Beam Model for Fiber-Reinforced Tubular Profiles
Full text linkThe current work presents a study on hollow cylinder composite beams, since hollow cylinder cross-sections are one of the principal geometry in many engineering fields. In particular, the present study considers the use of these profiles for scaffold design in offshore engineering. Composite beams cannot be treated as isotropic ones due to couplings mainly present among traction, torsion, bending and shear coefficients. This research aims to present a simple approach to study composite beams as they behave like isotropic ones by removing most complexities related to composite material design (e.g., avoid the use of 2D and 3D finite element modeling). The work aims to obtain the stiffness matrix of the equivalent beam through an analytical approach which is valid for most of the laminated composite configurations present in engineering applications. The 3D Euler–Bernoulli beam theory is considered for obtaining the correspondent isotropic elastic coefficients. The outcomes show that negligible errors occur for some equivalent composite configurations by allowing designers to continue using commercial finite element codes that implement the classical isotropic beam model
Material Symmetries in Homogenized Hexagonal-Shaped Composites as Cosserat Continua
Full text linkIn this work, material symmetries in homogenized composites are analyzed. Composite materials are described as materials made of rigid particles and elastic interfaces. Rigid particles of arbitrary hexagonal shape are considered and their geometry described by a limited set of parameters. The purpose of this study is to analyze different geometrical configurations of the assemblies corresponding to various material symmetries such as orthotetragonal, auxetic and chiral. The problem is investigated through a homogenization technique which is able to carry out constitutive parameters using a principle of energetic equivalence. The constitutive law of the homogenized continuum has been derived within the framework of Cosserat elasticity, wherein the continuum has additional degrees of freedom with respect to classical elasticity. A panel composed of material with various symmetries, corresponding to some particular hexagonal geometries defined, is analyzed under the effect of localized loads. The results obtained show the difference of the micropolar response for the considered material symmetries, which depends on the non-symmetries of the strain and stress tensor as well as on the additional kinematical and work-conjugated statical descriptors. This work underlines the importance of resorting to the Cosserat theory when analyzing anisotropic materials
MATLAB Codes for Finite Element Analysis
No full textThis new edition comes 10 years after the first publication. The main reason is due to some physiological changes into MATLAB programming and tools. The aim of the book is to present finite element programming with the help of MATLAB easy implementation style. Codes are not optimized to get best performances but to enhance clarity to readers. Finite element programming is presented via classical examples from structural mechanics. Readers can easily start from the given codes and modify them according to their needs.
In this book, most common problems for 1D and 2D structures are presented such as static, free vibration, buckling and linear time history analyses. Not all the given analyses are presented and solved for all the given structural models. However, readers can easily use theories and codes presented in order to extend the given codes to problems not given in the book.
Major modifications to the first edition are listed below
• Reviewed and improved MATLAB introductory chapter with more samples and programming details.
• General finite element code review and cleaning. Removal of MATLAB struct implementations, only plain MATLAB codes are used.
• Expanded theory and codes for the free vibration analysis of 2D and 3D trusses.
• Expanded theory and codes for the free vibration analysis of 2D and 3D
Bernoulli frames.
• Expanded theory and codes for the buckling problem of Bernoulli beams.
• Enhanced graphical output using Hermite interpolation for Bernoulli beams and
frames.
• Improved theoretical background of Timoshenko beam theory.
• Expanded theory and codes for the free vibration analysis of 2D plane stress
problems.
• Expanded theory and codes of Q8 and Q9 elements for plane stress.
• New codes for stress extrapolation and inter-element averaging for 2D plane
stress
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