Abstract
Dynamical oscillations of a vertical, free‐standing magnetoelastic ribbon clamped at the base are induced by parametric driving. The Young's modulus is a nonlinear function of an externally applied axial magnetic field, H = H0 + H1 cos 2πft, where H0 and H1 are dc and ac amplitudes, respectively, of the drive, and f is the applied frequency. Field parameters and ribbon length are chosen so that gravitational buckling occurs. A variety of nonlinear dynamical effects have been observed, including crisis‐induced intermittency [W. L. Ditto et al., Phys. Rev. Lett. 63, 923 (1989)] and strange (fractal attractor), nonchaotic (no positive Lyapunov exponents) behavior [W. L. Ditto et al., Phys. Rev. Lett. 65 (1990)]. The experiments, some of the results, and a simple model (if time permits) are described.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call