Dynamics and Fault Diagnosis of Nonlinear Rotors and Impellers

The book discusses recent developments in nonlinear dynamics applied to engineering, including stability and bifurcation in large-scale rotor dynamic systems, periodic motions and bifurcations in nonlinear circuit systems, fault diagnosis of complex engineering systems, singularities in fluid-machinery, and nonlinear behaviors in fluid-structure interaction.

Format: Paperback / softback
Length: 276 pages
Publication date: 29 April 2023
Publisher: Springer Nature Switzerland AG

This comprehensive volume explores recent advancements in nonlinear dynamics applied to engineering. The authors delve into diverse topics, including stability and bifurcation in large-scale, complex rotor dynamic systems, periodic motions and their bifurcations in nonlinear circuit systems, fault diagnosis of complex engineering systems through nonlinear approaches, singularities in fluid-mechanics and bifurcation analysis, nonlinear behaviors in rotor dynamic systems with multi-mistuned blades, mode localization induced by mistuning in impellers with periodical and cyclic symmetry, and nonlinear behaviors in fluid-structure interaction and their control. By presenting these cutting-edge findings, the book aims to enhance readers' understanding of the recent progress in nonlinear dynamics applied to large-scale, engineering systems, particularly in the realm of nonlinear rotors and impellers.

Introduction:
In recent years, nonlinear dynamics has gained significant attention in various fields of engineering, including mechanical, electrical, and aerospace. The study of complex systems characterized by nonlinearity has become crucial in understanding their behavior and designing efficient control strategies. This contributed volume aims to present the latest developments in nonlinear dynamics applied to engineering.

Stability and Bifurcation in Large-Scale, Complex Rotor Dynamic Systems:
One of the key areas of research in nonlinear dynamics is the study of stability and bifurcation in large-scale, complex rotor dynamic systems. These systems are commonly found in aircraft, wind turbines, and industrial machinery. The authors in this volume explore the stability analysis of these systems, considering factors such as geometric nonlinearity, material damping, and external disturbances. They also investigate the phenomenon of bifurcation, which occurs when a small change in the system parameters leads to a significant change in its behavior. By understanding bifurcation, engineers can predict and prevent system instability, ensuring safe and reliable operation.

Periodic Motions and Their Bifurcations in Nonlinear Circuit Systems:
Another important area of research is the study of periodic motions and their bifurcations in nonlinear circuit systems. These systems are characterized by their ability to exhibit stable and unstable periodic orbits. The authors in this volume discuss the theoretical foundations of periodic motions and their bifurcations, including the concept of Poincare maps and Lyapunov functions. They also explore the application of these concepts to various engineering systems, such as electrical circuits, mechanical systems, and biological systems. By understanding the dynamics of periodic motions, engineers can design efficient control strategies to stabilize and control complex systems.

Fault Diagnosis of Complex Engineering Systems with Nonlinear Approaches:
Fault diagnosis is a critical aspect of maintaining the reliability and safety of complex engineering systems. Nonlinear approaches have been increasingly used in fault diagnosis due to their ability to capture the complex behavior of these systems. The authors in this volume present various nonlinear fault diagnosis techniques, including neural networks, genetic algorithms, and fuzzy logic. They discuss the advantages and limitations of these techniques and their application to different engineering systems, such as power systems, transportation systems, and industrial machinery. By developing accurate and efficient fault diagnosis algorithms, engineers can improve the reliability and performance of these systems.

Singularities in Fluid-Mechanics and Bifurcation Analysis:
Fluid-mechanics is an important field of engineering that involves the study of the behavior of fluids in various applications. Nonlinear behavior in fluid-mechanics is particularly important due to its complex and unpredictable nature. The authors in this volume explore the singularities in fluid-mechanics, including the concept of shock waves and their interactions with solid boundaries. They also discuss the application of bifurcation analysis to fluid-mechanics problems, including the stability analysis of fluid-structure interactions and the control of fluid flows. By understanding the dynamics of fluid-mechanics systems, engineers can design innovative solutions to complex problems in industries such as aerospace, marine, and energy.

Nonlinear Behaviors in Rotor Dynamic System with Multi-Mistuned Blades:
Rotor dynamic systems are critical components of many engineering systems, including aircraft engines and wind turbines. Multi-mistuned blades have been increasingly used to improve the performance and efficiency of these systems. However, the presence of multi-mistuned blades can lead to nonlinear behaviors, such as mode localization and chattering. The authors in this volume discuss the theoretical foundations of mode localization and chattering in multi-mistuned blades. They also explore the application of control strategies, such as passive and active control, to mitigate these behaviors and improve the performance of rotor dynamic systems.

Mode Localization Induced by Mistuning in Impellers with Periodical and Cyclic Symmetry:
Mode localization is a phenomenon that occurs in rotating machinery, such as wind turbines and water turbines. It occurs when the rotating blades induce periodic or cyclic motions in the surrounding fluid, leading to the formation of localized regions of high flow velocity. The authors in this volume discuss the theoretical foundations of mode localization and its application to different engineering systems. They also explore the use of experimental techniques, such as particle image velocimetry and hot-wire anemometry, to study the dynamics of mode localization and its control. By understanding the dynamics of mode localization, engineers can design efficient control strategies to improve the performance and stability of rotating machinery.

Nonlinear Behaviors in Fluid-Structure Interaction and Their Control:
Fluid-structure interaction is an important area of engineering that involves the study of the interactions between fluids and solid structures. Nonlinear behavior in fluid-structure interaction can lead to complex and unpredictable behavior, which can have significant impacts on the performance and safety of engineering systems. The authors in this volume discuss the theoretical foundations of fluid-structure interaction and its application to different engineering systems. They also explore the use of control strategies, such as active and passive control, to mitigate the nonlinear behavior and improve the performance of fluid-structure interactions. By understanding the dynamics of fluid-structure interaction, engineers can design innovative solutions to complex problems in industries such as aerospace, marine, and energy.

Conclusion:
In conclusion, this contributed volume presents the latest developments in nonlinear dynamics applied to engineering. The authors have covered a wide range of topics, including stability and bifurcation in large-scale, complex rotor dynamic systems, periodic motions and their bifurcations in nonlinear circuit systems, fault diagnosis of complex engineering systems through nonlinear approaches, singularities in fluid-mechanics and bifurcation analysis, nonlinear behaviors in rotor dynamic systems with multi-mistuned blades, mode localization induced by mistuning in impellers with periodical and cyclic symmetry, and nonlinear behaviors in fluid-structure interaction and their control. By presenting these cutting-edge findings, the book aims to enhance readers' understanding of the recent progress in nonlinear dynamics applied to large-scale, engineering systems, particularly in the realm of nonlinear rotors and impellers. The future of nonlinear dynamics in engineering is promising, and this volume provides a valuable resource for researchers, engineers, and students interested in this field.

Weight: 438g
Dimension: 235 x 155 (mm)
ISBN-13: 9783030943035
Edition number: 1st ed. 2022