VIBRATION OF A BEAM INDUCED BY HARMONIC MOTION OF A HEAT SOURCE

✍ Scribed by J. Kidawa-Kukla

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 208 KB
• Volume: 205
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1997.0980

✦ Synopsis

In this paper, a solution to the problem of thermally induced vibration of a uniform, simply supported beam is presented. The effect of internal damping on the vibration is considered. The temperature of the rectangular beam changes as a result of heating by a laser beam. The centre of the laser spot moves harmonically around a fixed point of the beam. The exact solution of the problem is obtained by using a Green function method.

From the investigation, it can be concluded that if a frequency of the beam vibration is a multiple of the harmonic motion frequency of the heat source, then resonance can occur in the system. A numerical calculation is carried out to illustrate the theory.