Structural dynamics in engineering design / [edited by]Nuno M.M. Maia, Dario Di Maio, Alex Carrella, Francesco Marulo, Chaoping Zang, Jonathan E. Cooper, Keith Worden, Tiago A.N. Silva.

Includes bibliographical references and index.

Table of Contents
Acronyms xv
Preface xix

List of Authors xxi

Chapter 1 Theoretical Background 1

Chapter 2 Vibration Testing and Analysis 81

Chapter 3 Numerical Methods 131

Chapter 4 Linear System Identification 211

Chapter 5 Nonlinearity in Engineering Dynamics 295

Chapter 6 Updating of Numerical Models 387

Chapter 7 Industrial Case Studies 457

Appendices 519

Appendix A 519

Appendix B 537

Appendix C 539

Index 543

"The very first idea for this book came, some years ago, from Alex Carrella, who at the time was a young postdoctoral researcher, working within a University Technology Centre, integrating a group focused on applied research for a specific industry. In that case it was about vibration of helicopters. The partnership between academia and industry meant that an academic had to use the engineering pragmatism to solve some pressing issues, while practising engineers embrace the more rigorous and lengthier yet innovative practice of academia. Needless to say, the result is a fast transfer of technology to the industry and a much- needed flow of funds to academia to advance knowledge, as resources are of primary importance. For instance, in the process of preparing, carrying out and post-processing the data of a Ground Vibration Test (GVT) there were many questions to be answered, all within the science of structural dynamics, but related to different disciplines, each of them in a different book (or several books on the subject). A pragmatic approach would have been to have one tome with all that was needed enabling the counterpart in the industry to have a book on one's desk where he/she could dig a little deeper and have a more theoretical notion on a specific subject. Hence the idea of creating a volume to be kept on the desk of practising engineers and 'appliedresearchers' for having a reference for most topics related to structural dynamics. However, to create a book on the subject of structural dynamics particularly interesting to the industry is quite an ambitious objective to achieve, as the industry seeks the necessary knowledge to make things happen in a relatively fast way, the so-called "know-how", whereas academics explore the theoretical foundations to explain the physical phenomena, what one may call the "know-why". To find the right balance between these two perspectives is not an easy task. Although most of the co-authors of this textbook are scholars, they have the notion of the industrial environment and of the needs of those involved in the daily practice, sometimes due to some industrial experience, or because of close participation in research projects involving various types of companies. Structural Dynamics is a vast world and no book can encompass the wide variety of themes. Each subject can become a book on its own. Therefore, a judicious choice had to be made and it was decided that the book would have 7 chapters, where Chapter 1 underlines the main fundamental aspects of vibration theory, from the very simple single degree of freedom system to the more general multiple degree of freedom, pointing out relevant aspects that are used in practice; Chapter 2 addresses the main practical problems that may be found in testing a structure, analysing the results and how to tackle the encountered issues in order to solve them; Chapter 3 presents the most important numerical tools that are commonly used and provides the necessary insight on how the various methods work; Chapter 4 describes in detail methods of analysing the results from dynamic tests and how to identify the dynamic properties, so to build a reliable mathematical model that represents the behaviour of a structure when in real operational conditions; Chapter 5 gives a comprehensive and solid background on the nonlinear behaviour of a system, as often the nonlinear aspects cannot be ignore by the analyst engineer"-- Provided by publisher.

Nuno Maia

Nuno M. M. Maia is Professor of Mechanical Engineering at Instituto Superior T?cnico (IST), University of Lisbon. He has an MSc. in Mechanical Engineering from IST (1985), a Ph.D in Mechanical Vibrations from Imperial College London (1989) and Habilitation from IST (2001). He has authored around 230 publications, including two textbooks. He has organized 10 international conferences on Structural Dynamics, supervised 10 Ph.D students and coordinated national and international research projects.

Dario Di Maio

Dario Di Maio is Associate Professor of Mechanical Engineering at the Engineering Technology Faculty of University of Twente, The Netherlands. He has an MSc. in Mechanical Engineering from University Politecnica delle Marche, Italy (2001), and a Ph.D. in Mechanical Vibrations from Imperial College London (2007). He had a long collaboration with Rolls-Royce plc. through the Vibration and Composite University Technology Centre at Imperial College London and University of Bristol in the research areas of structural dynamics and composite fatigue failure. He authored around 100 publications. He was a leading figure of the Society of Experimental Mechanics (SEM) in the International Modal Analysis Conference (IMAC). He supervised 10 PhD students and more than 50 MSc. Students.

Alessandro ‘Alex’ Carrella

Alessandro ‘Alex’ Carrella has a degree in Aerospace Engineering from the University of Naples (Italy) and was awarded a PhD in Structural Dynamics at the ISVR (University of Southampton, UK). He was a lecturer in Structural Dynamics at the Dept of Aerospace Engineering at the University of Bristol when he left academia to join LMS (now Siemens) as Product Manager for Dynamic Environmental Test solutions first and then as manager of Aerospace & Defense Business development. Today he runs his own vibration and acoustic consultancy firm as well as directing the international operations at MSI-DFAT. Alex is an active member of the international space testing community and serves on technical and managing boards of major conferences.