Vibration of beams and rotating shafts under thermal effects

Avsec, Jurij

| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

First page > Show document

Show document

Title:	Vibration of beams and rotating shafts under thermal effects
Authors:	ID Avsec, Jurij (Author)
Files:	http://www.jve.lt/Vibro/JVE-2009-11-4/JVE-2009-11-4-511-Avsec.pdf
Language:	English
Work type:	Unknown
Typology:	1.01 - Original Scientific Article
Organization:	FE - Faculty of Energy Technology
Abstract:	Temperature variations can significantly change the dynamic characteristics of structures. In the presented paper we have studied the clamped isotropic rotor under thermal effects. We have studied aluminium and copper beam. Because the expansion is restrained by the clamping, the beam undergoes internal stresses, which induce changes in dynamic characteristics. We have also expanded and developed Marques and Inman model as well as Bahzad and Bastami model. We have taken into account the compound influence of thermal force, axial force in rotating shaft and gyroscopic effect. The behavior of rotating shaft is studied in the temperature range of 250-700 K. The influence of temperature-dependent material properties was considered primarily with respect to temperature variations. The presented research work demonstrates a very good agreement between experimental data and results from our vibrational model. On the basis of the proposed analytical model it is possible to determine the vibrational characteristics in very wide range of temperatures. The reported paper is the first one in scientific literature to consider collectively the combined influence of temperature, gyroscopic effects and rotor speeds on shaft and beam vibrations.
Keywords:	beam vibrations, rotor vibrations, temperature effects, mechanics, thermomechanics
Year of publishing:	2009
PID:	20.500.12556/DKUM-31309
UDC:	539.433
ISSN on article:	1392-8716
COBISS.SI-ID:	1024010076
NUK URN:	URN:SI:UM:DK:SKKVWNUD
Publication date in DKUM:	05.06.2012
Views:	4007
Downloads:	74
Metadata:
Categories:	Misc.
:	AVSEC, Jurij, 2009, Vibration of beams and rotating shafts under thermal effects. Journal of vibroengineering [online]. 2009. [Accessed 28 March 2025]. Retrieved from: http://www.jve.lt/Vibro/JVE-2009-11-4/JVE-2009-11-4-511-Avsec.pdf Copy citation