Strongly nonlinear wave dynamics in a chain of polymer coated beads
arXiv:cond-mat/0510089 · doi:10.1103/PhysRevE.73.026612
Abstract
Strongly nonlinear phononic crystals were assembled from a chain of Parylene-C coated steel spheres in a polytetrafluoroethylene (PTFE) holder. This system exhibits strongly nonlinear properties and extends the range of materials supporting "sonic vacuum" type behavior. The combination of a high density core and a soft (low elastic modulus) coating ensures a relatively low velocity of wave propagation. The beads contact interaction caused by the deformation of the Parylene coating can be described as classical nonlinear Hertz theory despite the viscoelastic nature of the polymer and the high strain rate deformation of the contact area. Strongly nonlinear solitary waves excited by impacts were investigated experimentally and compared to chains composed of uniform steel beads. Fracture of the polumer coating was detected under relatively large pulse amplitude.
23 pages, 7 figures
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Cited by in corpus (6)
- Nonlinear Coherent Structures in Granular Crystals
- Solitary and shock waves in discrete double power-law materials
- Characterizing Traveling Wave Collisions in Granular Chains Starting from Integrable Limits: the case of the KdV and the Toda Lattice
- Power law scaling of early-stage forces during granular impact
- Travelling waves and conservation laws for highly nonlinear wave equations modelling Hertz chains
- Long wavelength solitary waves in Hertzian chains and their properties in different nonlinearity regimes