The dynamic response of an axially accelerating string is investigated. The time dependent velocity is assumed to vary harmonically about a constant mean velocity. Approximate analytical solutions are sought using two different approaches. In the first approach, the equations are discretized first a
STABILITY OF AN ACCELERATING BEAM
β Scribed by G. CHAKRABORTY; A.K. MALLIK
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 135 KB
- Volume
- 227
- Category
- Article
- ISSN
- 0022-460X
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β¦ Synopsis
Lyapunov's method has been used to derive a su$cient condition for the transverse stability of an axially accelerating beam. A multiple-time-scale formulation is also presented to study the stability when the beam has constant axial acceleration/deceleration. In such situations, an accelerating beam is found to be always stable, whereas a decelerating beam may undergo ephemeral instability. The non-linear terms do not a!ect the stability condition; they only change the frequency of oscillation.
π SIMILAR VOLUMES
Transverse vibrations of an axially moving beam are considered. The axial velocity is harmonically varying about a mean velocity. The equation of motion is expressed in terms of dimensionless quantities. The beam e!ects are assumed to be small. Since, in this case, the fourth order spatial derivativ
The linear dynamic behaviour of a uniform beam with its cross-section having at least two symmetry axes (the shear centre is coincident with the centroid), rotating with constant velocity about its longitudinal axis and carrying an axial dead load is analyzed. Internal damping is also considered by