Morton-Newkirk Effect in Overhung Rotor Supported in.
Rotordynamic analysis was used to derive a correlation between measured vibration levels and temperature rise resulting in predictable bowing of the shaft in a 45,000 RPM fixed speed 250 kW microturbine having an overhung rotor supported by two rolling element bearings.
Rotordynamic Analysis of Asymmetric Turbofan Rotor Due to Fan Blade-out Event with Contact-Impact Rub Loads.
Effective analysis tools have been developed for predicting the nonlinear rotordynamic behavior of the SSME turbopumps under steady and transient operating conditions. Using these methods, preliminary parametric studies have been conducted on both generic and actual HPOTP (high pressure oxygen turbopumps) models. In particular.
In this work, the Design Exploration (DE) and Taguchi Methods along with unforced Rotordynamic analysis have been used to find the optimal levels of factors affecting the QLc. Under definite constraints, the mathematical models are developed for an optimization problem and then utilized to develop Machine Motorized Spindle (MMS).
The rotordynamic analysis of an eight-stage centrifugal pump which utilized serrated (grooved) seals is discussed. Using the corrections for serrated seals as suggested by Black and Cochrane (7), the first critical speed was calculated to be above the running speed of 3550 rprn. When the shop acceptance.
Introduction to Rotordynamics Analysis. John Vance. Search for more papers by this author. Fouad Zeidan. Search for more papers by this author. Brian Murphy. Search for more papers by this author. Book Author(s): John Vance.. Rotordynamic Effects of the Force Coefficients—A Summary.
Bearings Plus has a long history of expertise in the design and performance of fluid film bearings and seals. Download our technical papers for deeper insights.
Rotordynamics Analysis Recommended guidelines for rotordynamic characteristics are given in specifications such as The American Petroleum Institute (API) Standards. These guidelines include definitions of terms, recommended separation margins from critical speeds, allowable shaft vibration, allowable residual unbalances and stability acceptance criteria.
Rotordynamic Analysis Rotordynamics tools have been developed and applied by Southwest Research Institute (SwRI) since the 1960s to predict and rectify problems with rotating machinery and to allow design of new equipment.
Browse through a list of free utilities, drivers, software, and links to topic-related sites. RMA also maintains rotordynamics.org, a technical library of nearly 25,000 books and papers covering virtually all aspects of rotordynamic analysis. Read More.
An in-depth analysis of machine vibration in rotating machinery Whether its a compressor on an offshore platform, a turbocharger in a truck or automobile, or a turbine in a jet airplane, rotating machinery is the driving force behind almost anything that produces or uses energy. Counted on daily to perform any number of vital societal tasks, turbomachinery uses high rotational speeds to.
The focus of this literature survey and review is model reduction methods and their application to rotor dynamic systems. Rotor dynamic systems require careful consideration in their dynamic models as they include unsymmetric stiffness, localized nonproportional damping, and frequency-dependent gyroscopic effects. The literature reviewed originates from both controls and mechanical systems.
Dyrobes is a complete rotordynamics software tool that is powerful and versatile, yet easy to learn. Developed for the working engineer, Dyrobes offers complete rotordynamic analysis, vibration analysis, bearing performance and balancing calculations based in Finite Element Analysis.
