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Fundamental Mathematical Modeling of Additive Manufacturing
This book elucidates the fundamental thermomechanical behaviour inherent in the 3D printing process within a laser-based powder bed fusion (L-PBF) system. It presents foundational concepts and provides in-depth derivations of the governing equations. The analysis encompasses arbitrary anisotropic linear viscoelastic materials, accounting for thermal effects. The authors leverage the theory of axially moving materials, a framework previously employed in the analysis of production processes within the process industry. They introduce a coordinate frame that moves in tandem with the printing laser, adopting an Eulerian perspective towards the in-motion solid. Designed for graduate students and researchers, this book is poised to foster a profound comprehension and spur innovative technological advancements in the realm of additive manufacturing.
Mathematical Modeling and Optimization of Complex Structures
This volume contains selected papers in three closely related areas: mathematical modeling in mechanics, numerical analysis, and optimization methods. The papers are based upon talks presented on the International Conference for Mathematical Modeling and Optimization in Mechanics, held in Jyväskylä, Finland, March 6-7, 2014 dedicated to Prof. N. Banichuk on the occasion of his 70th birthday. The articles are written by well-known scientists working in computational mechanics and in optimization of complicated technical models. Also, the volume contains papers discussing the historical development, the state of the art, new ideas, and open problems arising in modern continuum mechanics and ...
Mechanics of Moving Materials
This book deals with theoretical aspects of modelling the mechanical behaviour of manufacturing, processing, transportation or other systems in which the processed or supporting material is travelling through the system. Examples of such applications include paper making, transmission cables, band saws, printing presses, manufacturing of plastic films and sheets, and extrusion of aluminium foil, textiles and other materials. The work focuses on out-of-plane dynamics and stability analysis for isotropic and orthotropic travelling elastic and viscoelastic materials, with and without fluid-structure interaction, using analytical and semi-analytical approaches. Also topics such as fracturing and...
Numerical Methods for Differential Equations, Optimization, and Technological Problems
This book contains the results in numerical analysis and optimization presented at the ECCOMAS thematic conference “Computational Analysis and Optimization” (CAO 2011) held in Jyväskylä, Finland, June 9–11, 2011. Both the conference and this volume are dedicated to Professor Pekka Neittaanmäki on the occasion of his sixtieth birthday. It consists of five parts that are closely related to his scientific activities and interests: Numerical Methods for Nonlinear Problems; Reliable Methods for Computer Simulation; Analysis of Noised and Uncertain Data; Optimization Methods; Mathematical Models Generated by Modern Technological Problems. The book also includes a short biography of Professor Neittaanmäki.
Stability of Axially Moving Materials
This book discusses the stability of axially moving materials, which are encountered in process industry applications such as papermaking. A special emphasis is given to analytical and semianalytical approaches. As preliminaries, we consider a variety of problems across mechanics involving bifurcations, allowing to introduce the techniques in a simplified setting. In the main part of the book, the fundamentals of the theory of axially moving materials are presented in a systematic manner, including both elastic and viscoelastic material models, and the connection between the beam and panel models. The issues that arise in formulating boundary conditions specifically for axially moving materials are discussed. Some problems involving axially moving isotropic and orthotropic elastic plates are analyzed. Analytical free-vibration solutions for axially moving strings with and without damping are derived. A simple model for fluid--structure interaction of an axially moving panel is presented in detail. This book is addressed to researchers, industrial specialists and students in the fields of theoretical and applied mechanics, and of applied and computational mathematics.
Advanced Problems in Mechanics
This book focuses on original theories and approaches in the field of mechanics. It reports on both theoretical and applied research, with a special emphasis on problems and solutions at the interfaces of mechanics and other research areas. The respective chapters highlight cutting-edge works fostering development in fields such as micro- and nanomechanics, material science, physics of solid states, molecular physics, astrophysics, and many others. Special attention has been given to outstanding research conducted by young scientists from all over the world. Based on the 47th edition of the international conference “Advanced Problems in Mechanics”, held on June 24–29, 2019, in St. Petersburg, Russia, and organized by Peter the Great St. Petersburg Polytechnic University and Institute for Problems in Mechanical Engineering of Russian Academy of Sciences under the patronage of Russian Academy of Sciences, the book provides researchers and graduate students with an extensive overview of the latest research and a source of inspiration for future developments in various fields of mechanics.
후츠파
작은 나라 이스라엘은 전 세계적으로 매우 경쟁력 있는 나라 중 하나이다. ‘중동의 실리콘밸리’라는 별명을 지닌 이스라엘은 2017-2018 세계경제포럼 국가 경쟁력 보고서 혁신 부문에 3위로 이름을 올렸다. 무엇이 이스라엘의 놀라운 성취를 가능하게 만들었는가? 이스라엘 사람들은 어떤 비밀을 지니고 있을까? 이스라엘 첨단기술 산업의 중심에 서 있는 인발 아리엘리는 이스라엘이 뛰어난 경제적 성과를 거둘 수 있었던 이유가 훌륭한 군대 문화 또는 유대인의 오랜 지혜에 있다는 통념에 반대한다. 창의적으로 사고하고 실패...
Chutzpah: Por que Israel É um Hub de Inovação e Empreendedorismo
Inovação, empreendedorismo, start-up, Israel. Tudo a ver. Por quê? A resposta está aqui. A especialista em tecnologia, Inbal Arieli relembra sua própria trajetória e a de outras lideranças israelenses para explicar a origem de uma cultura fortemente inovadora e que, em 2022, contava com 91 empresas listadas na Nasdaq, num valor total superior a 116 bilhões de dólares. Trata-se de uma cultura singular, que apoia o pensamento criativo e a tomada de risco, o que ajudou os israelenses a desenvolver a coragem para perseguir abordagens pouco ortodoxas, muitas vezes revolucionárias, que são o segredo do seu sucesso econômico.
The International Handbook on the Sociology of Education
This handbook discusses the social context of education, outlining the challenges as well as the advances in public and private education systems at the start of the new millennium. It presents an integrated account of social theory and methodologies, along with applied perspectives.
