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Theoretical And Experimental Investigations Of Internal Resonances And Related Behavior In Nonlinear Aeroelastic Systems
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Book Synopsis Theoretical and Experimental Investigations of Internal Resonances, and Related Behavior, in Nonlinear Aeroelastic Systems by : Thomas W. Strganac
Download or read book Theoretical and Experimental Investigations of Internal Resonances, and Related Behavior, in Nonlinear Aeroelastic Systems written by Thomas W. Strganac and published by . This book was released on 2004 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theoretical and Experimental Investigations of Internal Resonances, and Related Behavior, in Nonlinear Aeroelastic Systems by :
Download or read book Theoretical and Experimental Investigations of Internal Resonances, and Related Behavior, in Nonlinear Aeroelastic Systems written by and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adverse aeroelastic responses and related instabilities may affect the performance of many advanced air vehicle configurations. These responses are linked to nonlinearities within the aeroelastic system and have resulted in responses such as store-induced limit cycle oscillations (LCOs) and residual pitch oscillations (RPOs). As concepts for future aircraft designs are pursued, the source of these instabilities must be characterized. The primary objectives of this research are to investigate the presence of nonlinear pathologies such as LCOs and system resonances in aeroelastic systems; characterize the signature of such responses in the coupled nonlinear aerodynamic, structure, structural dynamic system; and, and examine passive suppression concepts. These research activities have been directed toward an explanation of nonlinear behavior found in aircraft systems. In particular, interest has been focused on store-induced limit cycle oscillations ("wing-with-store flutter") that exist, but not predicted with current approaches. We considered an aeroelastic system that was coupled by nonlinearities, possessed an external forcing, and satisfied conditions in which the frequencies were commensurate. Also, we examined LCO's induced by continuous hardening-type nonlinearities in structural stiffness.
Book Synopsis Investigations of Internal Resonance Phenomena and Related Nonlinear Pathologies in Aeroelastic Systems by : Heather Colleen Gilliatt
Download or read book Investigations of Internal Resonance Phenomena and Related Nonlinear Pathologies in Aeroelastic Systems written by Heather Colleen Gilliatt and published by . This book was released on 1997 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical and Experimental Random Vibration of Nonlinear Aeroelastic Structures by : Raouf A. Ibrahim
Download or read book Analytical and Experimental Random Vibration of Nonlinear Aeroelastic Structures written by Raouf A. Ibrahim and published by . This book was released on 1987 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analytical part deals with the nonlinear response of a three degree of freedom aeroelastic structural model in the neighborhood of combination internal resonance condition. The Fokker Planck equation approach is used to derive a general differential equation for the response statistical joint moments. The equations are solved by using numerical integration. The solution shows that the response coordinates are non-stationary random processes and the three normal modes are in complete nonlinear interaction. The interaction is found to be very strong at a region of internal detuning which is shifted from the exact internal resonance condition. This result is under further investigation by using a non-gaussian closure scheme. The experimental investigation is conducted out on a two degree of freedom model. When the first normal mode is externally excited by a band-limited random excitation, the system mean square response is found to be linearly proportional to the excitation spectral density level up to a certain level above which the two normal modes exhibit discontinuity governed mainly by the internal detuning parameter and the system damping ratios. The results are completely different when the second normal mode is excited. For small levels of excitation spectral density the response is dominated by the second normal mode. For higher levels of excitation spectral density the first normal mode attends and interacts nonlinearly with the second mode in a form of energy exchange.
Book Synopsis A Modern Course in Aeroelasticity by : Earl H. Dowell
Download or read book A Modern Course in Aeroelasticity written by Earl H. Dowell and published by Springer Nature. This book was released on 2021-10-16 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the sixth edition. It is suitable for one or more courses at the advanced undergraduate level and graduate level to cover the field of aeroelasticity. It is also of value to the research scholar and engineering practitioner who wish to understand the state of the art in the field. This book covers the basics of aeroelasticity or the dynamics of fluid–structure interaction. While the field began in response to the rapid development of aviation, it has now expanded into many branches of engineering and scientific disciplines and treats physical phenomena from aerospace engineering, bioengineering, civil engineering, and mechanical engineering in addition to drawing the attention of mathematicians and physicists. The basic questions addressed are dynamic stability and response of fluid structural systems as revealed by both linear and nonlinear mathematical models and correlation with experiment. The use of scaled models and full-scale experiments and tests play a key role where theory is not considered sufficiently reliable.
Book Synopsis 35th Aerospace Sciences Meeting & Exhibit by :
Download or read book 35th Aerospace Sciences Meeting & Exhibit written by and published by . This book was released on 1997 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Aircraft written by and published by . This book was released on 1998 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nonlinear Dynamics, Volume 1 by : Gaëtan Kerschen
Download or read book Nonlinear Dynamics, Volume 1 written by Gaëtan Kerschen and published by Springer. This book was released on 2015-08-14 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonlinear Dynamics, Volume 1. Proceedings of the 33rd IMAC, A Conference and Exposition on Balancing Simulation and Testing, 2015, the first volume of ten from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Structural Dynamics, including papers on: Nonlinear Oscillations Nonlinear Simulation Using Harmonic Balance Nonlinear Modal Analysis Nonlinear System Identification Nonlinear Modeling & Simulation Nonlinearity in Practice Nonlinear Systems Round Robin on Nonlinear System Identification.
Book Synopsis A Modern Course in Aeroelasticity by : Robert Clark
Download or read book A Modern Course in Aeroelasticity written by Robert Clark and published by Springer Science & Business Media. This book was released on 2004-09-30 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this new edition, the fundamental material on classical linear aeroelasticity has been revised. Also new material has been added describing recent results on the research frontiers dealing with nonlinear aeroelasticity as well as major advances in the modelling of unsteady aerodynamic flows using the methods of computational fluid dynamics and reduced order modeling techniques. New chapters on aeroelasticity in turbomachinery and aeroelasticity and the latter chapters for a more advanced course, a graduate seminar or as a reference source for an entrée to the research literature.
Book Synopsis Theoretical Study of Fano Resonance in a Cubic Nonlinear Mechanical System by : Alexander Michael Alberts
Download or read book Theoretical Study of Fano Resonance in a Cubic Nonlinear Mechanical System written by Alexander Michael Alberts and published by . This book was released on 2019 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resonance conditions are a major area of study in theoretical and experimental investigation. Normally, a resonance condition is characterized by a symmetric shape on either side of the resonance. In some cases, we can observe an asymmetric resonance shape, which is referred to as a Fano resonance. Recently, experimental evidence of the appearance of Fano resonance in a purely mechan[ci]ical system has been found. We will form a theoretical study of the appearance of Fano resonance in such a system involving a primary system and a small attachment. The frequency response of the primary system is approximated using the method of multiple-scales. Using this, we investigate how the various parameters associated with the system influence the asymmetry in the resonance line-shape. We first focus on a linear system, and briefly extend the results to a cubic nonlinear system.
Book Synopsis Proceedings of the ... International Modal Analysis Conference & Exhibit by :
Download or read book Proceedings of the ... International Modal Analysis Conference & Exhibit written by and published by . This book was released on 1987 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research in Progress written by and published by . This book was released on 1992 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1966 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Nonlinear Aeroelastic Systems by : Grigorios Dimitriadis
Download or read book Investigation of Nonlinear Aeroelastic Systems written by Grigorios Dimitriadis and published by . This book was released on 1999 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nonlinear Oscillations by : Ali H. Nayfeh
Download or read book Nonlinear Oscillations written by Ali H. Nayfeh and published by John Wiley & Sons. This book was released on 2008-09-26 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonlinear Oscillations is a self-contained and thorough treatment of the vigorous research that has occurred in nonlinear mechanics since 1970. The book begins with fundamental concepts and techniques of analysis and progresses through recent developments and provides an overview that abstracts and introduces main nonlinear phenomena. It treats systems having a single degree of freedom, introducing basic concepts and analytical methods, and extends concepts and methods to systems having degrees of freedom. Most of this material cannot be found in any other text. Nonlinear Oscillations uses simple physical examples to explain nonlinear dispersive and nondispersive waves. The notation is unified and the analysis modified to conform to discussions. Solutions are worked out in detail for numerous examples, results are plotted and explanations are couched in physical terms. The book contains an extensive bibliography.
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
