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This book introduces the reader to methods of mathematical modeling and solving non-stationary (dynamic) problems of the theory of magnetoelasticity, as well as to give an idea of the wealth of physical effects caused by the interaction of electromagnetic and mechanical phenomena in magnetically active elastic thin bodies. The studies are mainly limited to a model of isotropic body under the assumption of small deformations. In the first chapter of the book, based on the basic connected nonlinear equations and relations of mechanics and quasi-static electrodynamics of continuum media, a system of equations of magnetoelasticity, surface conditions, and governing equations describing the behavior of disturbances in a magnetoactive medium interacting with an external magnetic field is obtained. On this basis, in Chapters 2 and 3, using the main equations and relations of magnetoelastic vibrations and stability of magnetically soft, thin plates and shells are obtained. By solving specific applied problems, a number of qualitative and quantitative results were identified, caused by the interaction of mechanical and magnetic phenomena in ferromagnetic thin bodies. An approximate formula is obtained to determine magnetohydrodynamic pressure on the oscillating surfaces of plate flowing by supersonic flow of perfectly conducting gas in the presence of magnetic field. This formula is the generalization of well-known formula obtained on the basis of the classical piston theory of gas dynamics in the case of magneto-gas-dynamic flow. On this basis, it became possible to solve complex problems of zero magnetoelasticity. In the 4th and 5th chapters magnetoelastic processes in superconducting thin shells located in stationary and non-stationary magnetic fields are studied. Two-dimensional equations and corresponding conditions are obtained, which characterize vibrations and stability of superconducting cylindrical and spherical shells under the influence of the given magnetic field. By solving specific problems, the possibility of loss of both static and dynamic stability of thin superconducting bodies under the influence of external magnetic field has been established. The sixth chapter is devoted to mathematical modeling and investigation of issues of dynamics of magnetostrictive plates in magnetic fields (stationary and non-stationary) of several orientations. To study the processes of magnetoelastic interaction in the plate under consideration with complex physical properties of its material, the main postulates of the classical theories and methods were used. The influence of plate in-homogeneity on the processes under consideration was also studied.

Fluid mechanics --- Electromagnetism. Ferromagnetism --- Materials sciences --- materiaalkennis --- mechanica --- magnetisme --- Continuum mechanics. --- Materials science --- Magnetism. --- Continuum Mechanics. --- Computational Materials Science. --- Data processing.

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This proceedings volume gathers selected, carefully reviewed works presented at the Portugal-Italy Conference on Nonlinear Differential Equations and Applications (PICNDEA22), held on July 4-6, 2022, at the University of Évora, Portugal. The main focus of this work lies in non-linear problems originating in applications and their treatment with numerical analysis. The reader will also find new advances on topics such as ordinary and partial differential equations, numerical analysis, topological and variational methods, fluid mechanics, operator theory, stability, and more. The Portugal-Italy Conference on Nonlinear Differential Equations and Applications convenes Italian and Portuguese researchers in differential equations and their applications to amplify previous collaboration and to follow and discuss new topics in the area. Reflecting the increasing teamwork involving the two mathematical communities, the conference has been opened to researchers from all nationalities. While researchers in analysis and related fields are the primary readership of this volume, PhD students can rely on this book as a valuable source to keep pace with recent advances in differential equations and cutting-edge applications.

Operator theory --- Differential equations --- Mathematical analysis --- Numerical analysis --- Mathematics --- Fluid mechanics --- differentiaalvergelijkingen --- analyse (wiskunde) --- wiskunde --- mechanica --- numerieke analyse --- Differential equations. --- Mathematical analysis. --- Numerical analysis. --- Operator theory. --- Continuum mechanics. --- Differential Equations. --- Analysis. --- Numerical Analysis. --- Operator Theory. --- Continuum Mechanics.

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This book introduces a unified implementation of bond- and state-based peridynamic theory (PD) within a commercial finite element framework, Ansys, utilizing its native elements. It details the implementation of the PD theory and its integration with traditional finite elements. The primary objective is to equip students, researchers, and practicing engineers with both theoretical and practical knowledge of the PD theory, along with the skills necessary for analyzing engineering problems using Ansys. The book demonstrates that, unlike the conventional finite element method (FEM), the PD theory is highly suitable for progressive failure analysis, the multi-scale analysis of materials involving fracture and failure, and multi-physics analysis, including electromigration, corrosion, and electrodeposition. Additionally, it provides a step-by-step illustration of the specific procedures in the pre-processing, solution, and post-processing phases of the analysis through the Graphical User Interface (GUI) for various applications. The book is designed to be introductory and self-contained, minimizing the need for additional reference material. Describes an implementation of PD theory and its coupling to finite element method in Ansys, using its native elements; Utilization of Ansys through both the Graphics User Interface (GUI) and the Ansys Parametric Design Language (APDL); Explains the process for solving problems in various applications with the Ansys GUI, includes Ansys input files.

Differential equations --- Mathematical physics --- Fluid mechanics --- Artificial intelligence. Robotics. Simulation. Graphics --- differentiaalvergelijkingen --- mineralen (chemie) --- mijnbouw --- wiskunde --- fysica --- mechanica --- Continuum mechanics. --- Differential equations. --- Mathematical physics. --- Computer simulation. --- Continuum Mechanics. --- Differential Equations. --- Computational Physics and Simulations. --- Computer Modelling.

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This textbook aimed at upper-level undergraduate and graduate engineering students who need to describe the large deformation of elastic materials like soft plastics, rubber, and biological materials. The classical approaches to finite deformations of elastic materials describe a dozen or more measures of stress and strain. These classical approaches require an in-depth knowledge of tensor analysis and provide little instruction as to how to relate the derived equations to the materials to be described. This text, by contrast, introduces only one strain measure and one stress measure. No tensor analysis is required. The theory is applied by showing how to measure material properties and to perform computer simulations for both isotropic and anisotropic materials. The theory can be covered in one chapter for students familiar with Euler-Lagrange techniques, but is also introduced more slowly in several chapters for students not familiar with these techniques. The connection to linear elasticity is provided along with a comparison of this approach to classical elasticity. Explains ably simulation of materials undergoing large deformations Illustrates a simpler mathematical base to build thermodynamic and viscoelastic theories Describes how experimenters can make better numerical descriptions of deformable bodies.

Classical mechanics. Field theory --- Fluid mechanics --- Physics --- Materials sciences --- Applied physical engineering --- statica (fysica) --- materiaalkennis --- toegepaste mechanica --- fysica --- mechanica --- Materials --- Mechanics, Applied. --- Continuum mechanics. --- Physics. --- Statics. --- Materials. --- Materials Fatigue. --- Engineering Mechanics. --- Continuum Mechanics. --- Classical and Continuum Physics. --- Mechanical Statics and Structures. --- Materials Engineering. --- Fatigue.

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This updated/augmented second edition retains it class-tested content and pedagogy as a core text for graduate courses in advanced fluid mechanics and applied science. The new edition adds revised sections, clarification, problems, and chapter extensions including a rewritten section on Schauder bases for turbulent pipe flow, coverage of Cantwell’s mixing length closure for turbulent pipe flow, and a section on the variational Hessian. Consisting of two parts, the first provides an introduction and general theory of fully developed turbulence, where treatment of turbulence is based on the linear functional equation derived by E. Hopf governing the characteristic functional that determines the statistical properties of a turbulent flow. In this section, Professor Kollmann explains how the theory is built on divergence free Schauder bases for the phase space of the turbulent flow and the space of argument vector fields for the characteristic functional. The second segment, presented over subsequent chapters, is devoted to mapping methods, homogeneous turbulence based upon the hypotheses of Kolmogorov and Onsager, intermittency, structural features of turbulent shear flows and their recognition. Adds section on Plancherel’s theorem and a detailed problem on analytic solution of functional differential equations; Extends chapter nine on characteristic functionals to greater explain the role of convection; Reinforces concepts with problems on the theory and particular examples of turbulent flows such as periodic pipe flow. . .

Space research --- Astronomy --- Fluid mechanics --- Matter physics --- Chemistry of complexes --- Applied physical engineering --- Air traffic --- complexen (chemie) --- astronauten --- materialen (technologie) --- engineering --- luchtvaart --- ingenieurswetenschappen --- ruimtevaart --- mechanica --- vloeistoffen --- Continuum mechanics. --- Fluid mechanics. --- Aerospace engineering. --- Astronautics. --- Soft condensed matter. --- Continuum Mechanics. --- Engineering Fluid Dynamics. --- Aerospace Technology and Astronautics. --- Soft and Granular Matter.