Figure 1. (a) A freely vibrating Timoshenko beam mounted on Pasternak foundation. The foundation is modelled as an in"nite series of massless vertical springs of sti!ness k 5 per unit length, connected at top by a shearing layer of shearing sti!ness k . per unit length. (b) A small element of the be
Dynamics of Timoshenko beams on Pasternak foundation under moving load
β Scribed by M.H. Kargarnovin; D. Younesian
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 380 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0093-6413
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π SIMILAR VOLUMES
In a recent and comprehensive Letter to the Editor [1] approximate explicit formulae have been derived by El-Mously for the fundamental natural frequency for vibration of Timoshenko beams mounted on Pasternak foundation. It is the purpose of this note to mention other previous works in which the ap
The dynamic sti!ness matrix of an in"nite Timoshenko beam on viscoelastic foundation in the moving co-ordinate system travelling at a constant velocity is established in this paper. The dynamic sti!ness matrix is essentially a function of the velocity of a moving load applied to the beam system. Thi
The dynamic stability of a stepped beam subjected to a moving mass is investigated in this study. The equations of motion for transverse vibrations of the beam are developed in distributed parameter and "nite element forms. The impulsive parametric excitation theory is used to predict the stability
The dynamic sti!ness matrix of an in"nite Timoshenko beam on viscoelastic foundation to a harmonic moving load is established. This dynamic sti!ness matrix is essentially a function of the velocity and frequency of the harmonic moving load. The critical velocities and the resonant frequencies can be