Includes bibliographical references.
|Statement||by W. Shapiro and J. H. Rumbarger.|
|Series||Flexible rotor-bearing system dynamics,, # 2|
|Contributions||Rumbarger, J. H., joint author.|
|LC Classifications||TJ1058 .F58 vol. 2|
|The Physical Object|
|Number of Pages||23|
|LC Control Number||73156290|
The Purposes and Objectives of Rotor Dynamics Analyses; The Importance of Accurately Modeling a Rotor-Bearing System Modeling Bearings and Support Structures in a Rotor Bearing System; We’ve finally made it to the analysis part of the rotor dynamics and bearing analysis intro series! Let’s get into it, this blog will have a lot to cover! The purpose of this book is to give a basic understanding of rotor dynamics phenomena with the help of simple rotor models and subsequently, the modern analysis methods for real life rotor systems. This background will be helpful in the identification of rotor-bearing system parameters and its use in futuristic model-based condition monitoring and, fault diagnostics and prognostics. The book. S. Singhal, in 10th International Conference on Vibrations in Rotating Machinery, ABSTRACT. Rotor dynamics analysis is an important calculation step to design efficient and reliable rotating equipment. When calculating the rotor dynamics of systems with hydrodynamic bearings, the non-linear fluid film forces are reduced to linearize stiffness and damping coefficients. The author will show that there is a high agreement between simulated and measured friction losses. In the second step; the TC model is detached from the virtual test bench and a variation of the essential parameters are carried out to identify the influence of the non-linear rotor dynamics on the bearing .
Abstract. This work presents a methodology to analyse the influence of the foundation or supporting structure on the rotor-bearings system. A frequency response analysis of the complete system was accomplished by considering physical co-ordinates for the rotor-bearings system and principal co-ordinates for the foundation. Influence of Preload on the Dynamic Coefficients in Tilt Pad Bearings. Influence of the Bearing Length or Pad Length. Influence of the Pivot Offset. Influence of the Number of Pads. Ball and Rolling Element Bearings. Case Study: Bearing Support Design for a Rocket Engine Turbopump. Squeeze Film Dampers. Applications of Squeeze Film Dampers. Fluid film bearing technology is presented in this tutorial as it applies to turbomachinery equipment. The focus here is on the 1 6 1 practical aspects of fluid film journal bearings, as opposed to theoretical analysis. Failure modes and the mechanisms leading to these failures wi l l be discussed, along with techniques used to identify and cure them. The influence of different bearing. Introduction Equations of motion Structural analysis Case studies References History and scientists History and scientists 7 / 27 • –ankine R – On the centrifugal force on rotating shafts steam turbines notion of critical speed • –öppl F, – Belluzo, Stodola notion of supercritical speed • –effcott J – The lateral vibration of loaded shafts in the neighborhod.
Dynamics of Rotors and Foundations, Erwin Kramer, Springer-Verlag Berlin Heidelberg Vibration Analysis of Rotors, Chong-Won Lee, Center for Noise and Vibration Control (NOVIC), Korea, , Springer Rotordynamics of Automotive Turbochargers-Linear and Nonlinear Rotordynamics -Bearing Design -Rotor. developed into a coupled rotor-bearing model. 3. Modal analysis of the stationary rotor. Typically, the first step in modeling the dynamics of a rotor bearing system is the modal analysis of the stationary rotor. This means that the influence of the bearings is excluded first. The rotor geometry is discretized using finite elements. Rotor Dynamics and Fluid Film Bearing Analysis. Development of Software Programs. All of the software programs used by Rotating Machinery Consulting were developed using the ABSOFT Fortran compiler. The programs are written using 64 bit, Double Precision code which gives a 15 digit accuracy. from book IUTAM Symposium on Emerging Trends in Rotor Dynamics: Proceedings of the IUTAM Symposium on Emerging Trends in Rotor Dynamics, held in New Delhi, India, March 23 - Ma (pp).