Civil Engineering and Symmetry
Civil Engineering and Symmetry

Author: Edmundas Kazimieras Zavadskas

Publisher: MDPI

Published: 2019-06-14

Total Pages: 198

ISBN-13: 3039210025

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A topic of utmost importance in civil engineering is finding optimal solutions throughout the life cycle of buildings and infrastructural objects, including their design, manufacturing, use, and maintenance. Operational research, management science, and optimization methods provide a consistent and applicable groundwork for engineering decision-making. These topics have received the interest of researchers and, after a rigorous peer-review process, eight papers have been published in this Special Issue. The articles in this Printed Edition demonstrate how solutions in civil engineering, which bring economic, social, and environmental benefits, are obtained through a variety of methodologies and tools. Usually, decision-makers need to take into account not just a single criterion, but several different criteria and, therefore, multi-criteria decision-making (MCDM) approaches have been suggested for application in five of the published papers; the rest of the papers apply other research methods. Most approaches suggested decision models under uncertainty, proposing hybrid MCDM methods in combination with fuzzy or rough set theory, as well as D-numbers. The application areas of the proposed MCDM techniques mainly cover production/manufacturing engineering, logistics and transportation, and construction engineering and management. We hope that a summary of the Special Issue as provided here will encourage a detailed analysis of the papers included in the Printed Edition.

Vibration Analysis and Structural Dynamics for Civil Engineers
Vibration Analysis and Structural Dynamics for Civil Engineers

Author: Alphose Zingoni

Publisher: CRC Press

Published: 2018-10-08

Total Pages: 276

ISBN-13: 1482264072

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Appeals to the Student and the Seasoned Professional While the analysis of a civil-engineering structure typically seeks to quantify static effects (stresses and strains), there are some aspects that require considerations of vibration and dynamic behavior. Vibration Analysis and Structural Dynamics for Civil Engineers: Essentials and Group-Theoretic Formulations is relevant to instances that involve significant time-varying effects, including impact and sudden movement. It explains the basic theory to undergraduate and graduate students taking courses on vibration and dynamics, and also presents an original approach for the vibration analysis of symmetric systems, for both researchers and practicing engineers. Divided into two parts, it first covers the fundamentals of the vibration of engineering systems, and later addresses how symmetry affects vibration behavior. Part I treats the modeling of discrete single and multi-degree-of-freedom systems, as well as mathematical formulations for continuous systems, both analytical and numerical. It also features some worked examples and tutorial problems. Part II introduces the mathematical concepts of group theory and symmetry groups, and applies these to the vibration of a diverse range of problems in structural mechanics. It reveals the computational benefits of the group-theoretic approach, and sheds new insights on complex vibration phenomena. The book consists of 11 chapters with topics that include: The vibration of discrete systems or lumped parameter models The free and forced response of single degree-of-freedom systems The vibration of systems with multiple degrees of freedom The vibration of continuous systems (strings, rods and beams) The essentials of finite-element vibration modelling Symmetry considerations and an outline of group and representation theories Applications of group theory to the vibration of linear mechanical systems Applications of group theory to the vibration of structural grids and cable nets Group-theoretic finite-element and finite-difference formulations Vibration Analysis and Structural Dynamics for Civil Engineers: Essentials and Group-Theoretic Formulations acquaints students with the fundamentals of vibration theory, informs experienced structural practitioners on simple and effective techniques for vibration modelling, and provides researchers with new directions for the development of computational vibration procedures.

Symmetry in Engineering Sciences II
Symmetry in Engineering Sciences II

Author: Francisco G. Montoya

Publisher: MDPI

Published: 2020-12-16

Total Pages: 320

ISBN-13: 3039367145

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This book presents a sample of theoretical and practical advances in symmetry in multidisciplinary engineering applications. It covers several applications, such as mechanical analysis of tunnel lining, prediction methods for the ring damper used in gears, calibration methods for manipulators, design methods for wheel configurations of mobile robots, analysis of elastic plastic damaged zones, 3D printed corneal models, analysis of multibody system dynamic networks, structural elements in architecture, railway transportation, transportation of hazardous materials, cable-driven mechanisms, and image processing. The contributions included in this book describe the state-of-the-art advances in this field and demonstrate the possibilities of the study of symmetry in multidisciplinary applications in the field of engineering.

Symmetry in Engineering Sciences
Symmetry in Engineering Sciences

Author: Raúl Baños Navarro

Publisher: MDPI

Published: 2019-11-21

Total Pages: 220

ISBN-13: 3039218743

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This book presents interesting samples of theoretical and practical advances of symmetry in multidisciplinary engineering applications. It covers several applications, such as accessibility and traffic congestion management, path planning for mobile robots, analysis of shipment service networks, fault diagnosis methods in electrical circuits and electrical machines, geometrical issues in architecture, geometric modeling and virtual reconstruction, design of noise detectors, filters, and segmentation methods for image processing, and cyclic symmetric structures in turbomachinery applications, to name but a few. The contributions included in this book depict the state of the art in this field and lay the foundation for the possibilities that the study of symmetry has in multidisciplinary applications in the field of engineering.

Solution Models based on Symmetric and Asymmetric Information
Solution Models based on Symmetric and Asymmetric Information

Author: Edmundas Kazimieras Zavadskas

Publisher: MDPI

Published: 2019-06-05

Total Pages: 202

ISBN-13: 3039210068

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This Special Issue covers symmetry and asymmetry phenomena occurring in real-life problems. We invited authors to submit their theoretical or experimental research presenting engineering and economic problem solution models dealing with the symmetry or asymmetry of different types of information. The issue gained interest in the research community and received many submissions. After rigorous scientific evaluation by editors and reviewers, nine papers were accepted and published. The authors proposed different MADM and MODM solution models as integrated tools to find a balance between the components of sustainable global development, to find a symmetry axis concerning goals, risks, and constraints to cope with the complicated problems. Most approaches suggested decision models under uncertainty, combining the usual decision-making methods with interval-valued fuzzy or rough sets theory, also Z numbers. The application fields of the proposed models involved both problems of technological sciences and social sciences. The papers cover three essential areas: engineering, economy, and management. We hope that a summary of the Special Issue as provided here will encourage a detailed analysis of the papers included in the Printed Edition.

Introduction to AutoCAD 2025 for Civil Engineering Applications
Introduction to AutoCAD 2025 for Civil Engineering Applications

Author: Nighat Yasmin

Publisher: SDC Publications

Published:

Total Pages: 873

ISBN-13: 163057676X

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• Combines the theory of engineering graphics and the use of AutoCAD 2025 • Designed specifically for civil engineering students • Uses clearly defined objectives and step-by-step instructions • This edition features new and updated examples throughout the book There is an old saying that an engineer describes every idea with a drawing. With the advances in computer technology and drawing software, it has never been easier, or more important, to learn computer aided design. To be effective, however, a drawing must accurately convey your intended meaning and that requires more than just knowing how to use software. This book provides you with a clear presentation of the theory of engineering graphics and the use of AutoCAD 2025 as they pertain to civil engineering applications. This combination of theory and its practical application will give you the knowledge and skills necessary to create designs that are accurate and easily understood by others. Book Organization Each chapter starts with a bulleted list of chapter objectives followed by an introduction. This provides you with a general overview of the material that will be covered in the chapter. The contents of each chapter are organized into well-defined sections that contain step-by-step instructions and illustrations to help you learn to use the various AutoCAD commands. More importantly, you will also learn how and why you would use these tools in real world projects. This book has been categorized into 14 parts: • Introduction to AutoCAD 2025 ribbon interface (1-4) • AutoCAD and annotative objects (5) • AutoCAD and locks, layers, layouts, and template files (6-8) • Dimensions and tolerance using AutoCAD 2025 (9-10) • Use of AutoCAD in land survey data plotting (11-12) • The use of AutoCAD in hydrology (13-14) • Transportation engineering and AutoCAD (15-16) • AutoCAD and architecture technology (17-19) • Introduction to working drawings (20) • Plotting from AutoCAD (21) • External Reference Files - Xref (22) • Suggested drawing problems (23-24) • Bibliography (25) • Index (26)

Introduction to AutoCAD 2017 for Civil Engineering Applications
Introduction to AutoCAD 2017 for Civil Engineering Applications

Author: Nighat Yasmin

Publisher: SDC Publications

Published: 2016-09

Total Pages: 770

ISBN-13: 1630570397

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The main purpose of this book is to provide civil engineering students with a clear presentation of the theory of engineering graphics and the use of AutoCAD 2017. Each chapter starts with the chapter objectives followed by the introduction. The contents of each chapter are organized into well-defined sections that contain step-by-step instructions to carry out the AutoCAD commands. The drawings shown in this book are created using AutoCAD 2017 and Paint software.

Introduction to AutoCAD 2022 for Civil Engineering Applications
Introduction to AutoCAD 2022 for Civil Engineering Applications

Author: Nighat Yasmin

Publisher: SDC Publications

Published:

Total Pages: 838

ISBN-13: 1630574430

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There is an old saying that an engineer describes every idea with a drawing. With the advances in computer technology and drawing software, it has never been easier, or more important, to learn computer aided design. To be effective, however, a drawing must accurately convey your intended meaning and that requires more than just knowing how to use software. This book provides you with a clear presentation of the theory of engineering graphics and the use of AutoCAD 2022 as they pertain to civil engineering applications. This combination of theory and its practical application will give you the knowledge and skills necessary to create designs that are accurate and easily understood by others. Book Organization Each chapter starts with a bulleted list of chapter objectives followed by an introduction. This provides you with a general overview of the material that will be covered in the chapter. The contents of each chapter are organized into well-defined sections that contain step-by-step instructions and illustrations to help you learn to use the various AutoCAD commands. More importantly, you will also learn how and why you would use these tools in real world projects. This book has been categorized and ordered into 13 parts: • Introduction to AutoCAD 2022 ribbon interface (1-7) • Dimensioning and tolerancing using AutoCAD 2022 (8-9) • AutoCAD and annotation (10) • Use of AutoCAD in land survey data plotting (11-12) • The use of AutoCAD in hydrology (13-14) • Transportation engineering and AutoCAD (15-16) • AutoCAD and architecture technology (17-19) • Introduction to working drawings (20) • Plotting from AutoCAD (21) • External Reference Files - Xref (22) • Suggested drawing problems (23-24) • Bibliography (25) • Index (26) New in the 2022 Edition Several improvements were made to the current edition. The most significant improvements to this edition are the addition of a new chapter focusing on Annotation and the new examples for Chapters 10 – 17 (the civil engineering applications). PowerPoint presentations have been created and are available to instructors. The index was also improved. The contents of the book are based on the ribbon interface. Chapter 23 (Suggested In-Class Activities) provides in-class activities (or ICA). Some of the initial ICAs now include drawing examples with step-by-step instructions. Also, new problems have been added to the homework chapter. Furthermore, the contents and the drawings of every chapter are improved, and new examples are added.

Symmetry in Mechanical Engineering
Symmetry in Mechanical Engineering

Author: Adam Glowacz

Publisher: MDPI

Published: 2020-06-03

Total Pages: 372

ISBN-13: 3039362143

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Recent advancements in mechanical engineering are an essential topic for discussion. The topics relating to mechanical engineering include the following: measurements of signals of shafts, springs, belts, bearings, gears, rotors, machine elements, vibration analysis, acoustic analysis, fault diagnosis, construction, analysis of machine operation, analysis of smart-material systems, integrated systems, stresses, analysis of deformations, analysis of mechanical properties, signal processing of mechanical systems, and rotor dynamics. Mechanical engineering deals with solid and fluid mechanics, rotation, movements, materials, and thermodynamics. This book, with 15 published articles, presents the topic “Symmetry in Mechanical Engineering”. The presented topic is interesting. It is categorized into eight different sections: Deformation; Stresses; Mechanical properties; Tribology; Thermodynamic; Measurement; Fault diagnosis; Machine. The development of techniques and methods related to mechanical engineering is growing every month. The described articles have made a contribution to mechanical engineering. The proposed research can find applications in factories, oil refineries, and mines. It is essential to develop new improved methods, techniques, and devices related to mechanical engineering.