Vibration Analysis of Gas Turbine Rotors - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Vibration Analysis of Gas Turbine Rotors write by Srinivasa Rao Dokku. This book was released on 2018-09-20. Vibration Analysis of Gas Turbine Rotors available in PDF, EPUB and Kindle. Master's Thesis from the year 2016 in the subject Engineering - Mechanical Engineering, , language: English, abstract: The purpose of this report is to determine the lateral and torsional dynamic characteristics of the complete system under synchronous conditions of excitation and response. A damped natural response study was made in order to investigate the combined effect of oil film stiffness and damping coefficients on system damping and stability characteristics at all damped natural resonance speeds. An unbalance response analysis is also performed to study the system sensitivity. This study was performed to investigate the lateral vibration characteristics of the subject system in order to avoid vibration problems that might interfere with the smooth and reliable operation of the system. Total system studies are important in that often the coupling effects of marrying driver and driven equipment result in resonant speeds that are not calculable when investigating the response of the separate components. Oil film stiffness and damping for all bearings must be properly considered in the system calculations along with the effective stiffness and damping of pedestal supports as required. The above effects are in the following calculation to ensure the proper calculation of resonant speeds.The following study concerns itself with the lateral analysis of gas turbine, load coupling, and 50 Hz/15.75Kva generator. This study reports the lateral natural frequencies and mode shapes calculated from the mass and stiffness distribution of the beam elements modeled using the DYROBES software. An unbalanced response analysis is also performed to study the system sensitivity. The significance of torsional vibration in high speed rotating machinery is well established. It is desirable to keep all torsional natural frequencies away from operating speed as well as twice the electrical frequency of the system. However, this is not always feasible and, therefore torsional criticals can be tolerated within these regions provided the response to excitation levels are low enough to keep the alternating shear stress within acceptable levels The following study concerns itself with the complete torsional analysis of gas turbine rotor including load coupling, gear box and 50Hz/15.75KVA generator rotor. This study reports the torsional natural frequencies, mode shapes and Campbell diagram by using transfer matrix method. The transient response shear stresses were also calculated for fault condition.
Turbomachine Blade Vibration
Turbomachine Blade Vibration - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Turbomachine Blade Vibration write by J. S. Rao. This book was released on 1991. Turbomachine Blade Vibration available in PDF, EPUB and Kindle. Fatigue Failures Of Blades Is One Of The Most Vexing Problems Of Turbomachine Manufacturers, Ever Since The Steam Turbine Became The Main Stay For Power Generating Equipment And Gas Turbines Are Increasingly Used In The Air Transport. The Problem Is Very Complex, Involving The Excitation Due To Aerodynamic Stage Interaction; Damping Due To Material Deformation, Friction At Slip Surfaces And Aerodynamic Damping; Vibration Of An Asymmetric Aerofoil Tapered Along Its Length And Mounted On A Rotating Disc At A Stagger Angle. The Problem Is Also Governed By Heat Transfer Analysis And Thermal Stresses.His Book Deals With A Basic Understanding Of Free Vibratory Behaviour Of Turbine Blades- Free Standing, Packetted, And Bladed-Discs. The Analysis Is Based On Continuous And Discrete Models Using Energy Principles And Finite Element Techniques. A Clear Understanding Of The Interference Phenomenon In A Thin Cambered Airfoil Stage In Subsonic Flow Is Presented To Determine The Nonsteady Excitation Forces Acting On The Blades. A Comprehensive Treatment On The Blade Damping Phenomenon That Occurs In Turbines Is Given. The Nonlinear Damping Models Account For Material Damping And Friction Damping As A Function Of Rotational Speed For Each Mode. Resonant Response Calculation Procedures For The Steadily Running As Well As Accelerating Blades Are Given.Cumulative Damage Calculations Are Then Outlined For Fatigue Life Estimation Of Turbomachine Blades. The Book Also Deals With Heat Transfer Analysis And Thermal Stress Calculations Which Help In A Comprehensive Understanding Of The Blade Problems.
Vibration Analysis and System Identification of Mistuned Multistage Turbine Engine Rotors
Vibration Analysis and System Identification of Mistuned Multistage Turbine Engine Rotors - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Vibration Analysis and System Identification of Mistuned Multistage Turbine Engine Rotors write by Sang Heon Song. This book was released on 2006. Vibration Analysis and System Identification of Mistuned Multistage Turbine Engine Rotors available in PDF, EPUB and Kindle.
Vibration Analysis of Rotor - Coupling -bearing System with Misaligned Shafts
Vibration Analysis of Rotor - Coupling -bearing System with Misaligned Shafts - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Vibration Analysis of Rotor - Coupling -bearing System with Misaligned Shafts write by A. Sreenivasa Rao. This book was released on 1996. Vibration Analysis of Rotor - Coupling -bearing System with Misaligned Shafts available in PDF, EPUB and Kindle. Presented at the International Gas Turbine and Aeroengine Congress &Exhibition Birmingham, UK - June 10-13, 1996.
Advances in Acoustics and Vibration
Advances in Acoustics and Vibration - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Advances in Acoustics and Vibration write by Tahar Fakhfakh. This book was released on 2016-09-01. Advances in Acoustics and Vibration available in PDF, EPUB and Kindle. The book provides readers with a snapshot of recent research and industrial trends in field of industrial acoustics and vibration. Each chapter, accepted after a rigorous peer-review process, reports on a selected, original piece of work presented and discussed at International Conference on Acoustics and Vibration (ICAV2016), which was organized by the Tunisian Association of Industrial Acoustics and Vibration (ATAVI) and held March 21-23, in Hammamet, Tunisia. The contributions, mainly written by north African authors, covers advances in both theory and practice in a variety of subfields, such as: smart materials and structures; fluid-structure interaction; structural acoustics as well as computational vibro-acoustics and numerical methods. Further topics include: engines control, noise identification, robust design, flow-induced vibration and many others.This book provides a valuable resource for both academics and professionals dealing with diverse issues in applied mechanics. By combining advanced theories with industrial issues, it is expected to facilitate communication and collaboration between different groups of researchers and technology users.
