Motion of rotor at rundown under special conditions of summands of total moment of rotational drag
Journal Title: Технічна механіка, Техническая механика, Technical Mechanics - Year 2016, Vol 3, Issue 3
Abstract
The study focuses on the pressing problem of an analytical validation of the integral characteristics of the rotor systems for further balancing the rotors at rundown (at start). This allows dismissing the contact vibration pickups and other special instruments for monitoring the balancing process. The work aim is to develop an algo-rithm of the determination of the integral characteristics of the rundown rotor system in the presence of a special relation (a positive discriminant) of the coefficients of moments, which are summands of a total moment of rotational drag. A one-to-one sequent algorithm is built to determine an axial moment of the rotor inertia, the needed coefficients of the equation of a total moment of rotational drag, a total frictional characteristic, a reduced mass of the rotor, and an axial location of the center of mass. Four starts would suffice to determine these magnitudes. The presented disturbances of the rotor system are graded. A general approach to the solution of the problem without the method of least squares in full measure is presented. This obviates the solution of the multi-modal optimization problems and a choice of an optimization criterion.
Authors and Affiliations
I. Taran, M. Trubitsin
Keywords
Related Articles
- EP ID EP352870
- DOI -
- Views 98
- Downloads 0
Dynamics of elastic half-space with cylindrical cavity supported by shell at axymmetrical loads
Attention focusses on the study of a dynamic stressed-strained state of the linear-elastic isotropic homoge-neous half-space, which contains the cylindrical cavity supported by a thin elastic shell, under the action of d...
Effects of high-speed cooling on physical and mechanical properties of AMg6 aluminum alloy after high-temperature heating
The effects of high-speed cooling on the physical and mechanical properties of the AMg6 aluminum alloy after high-temperature heating have been examined. An experimental procedure for improving the material viscosity in...
Numerical studies of paralleling test particles method using statistic independent tests
The test particles method (TPM) as a version of the Monte-Carlo statistic method for the stationary state-ment is considered. Nonparalleling a sequential algorithm of the TPM as large independent subproblems (LISs) has b...
Рrediction of changes in wheel profile of railway vehicle due to operational wear
The investigation objective was to develop the technique for predicting railway vehicle wheels wear and changes in their profiles in operation. Methods of mathematical and computer simulation, numerical integration, osci...
On the determination of the tether length for an experimental elec-trodynamic system
The aim of this paper is to analyze the dependence of the tether length of a small experimental electrody-namic space tether system (EDSTS) without additional contactors required for the EDSTS operation in the anode-cath...