title: Tunability of solitary wave properties in one-dimensional strongly nonlinear phononic crystals.
abstract: One-dimensional strongly nonlinear phononic crystals were assembled from chains of PTFE (polytetrafluoroethylene) and stainless-steel spheres with gauges installed inside the beads. Trains of strongly nonlinear solitary waves were excited by impacts. A significant modification of the signal shape and an increase of solitary wave speed up to two times (at the same magnitude of dynamic contact force) were achieved through a noncontact magnetically induced precompression of the chains. The data for the PTFE based chains are presented for the first time and the data for the stainless-steel beads chains are extended into a range of maximum dynamic forces more than one order of magnitude lower than previously reported. Experimental results agreed reasonably well with the long-wave approximation and numerical calculations based on the Hertz interaction law for particles interactions.
authors.affiliation: Materials Science and Engineering Program, University of California at San Diego, La Jolla, California 92093-0418, USA.
authors.forename: C
authors.initials: C
authors.lastname: Daraio
authors.forename: V F
authors.initials: VF
authors.lastname: Nesterenko
authors.forename: E B
authors.initials: EB
authors.lastname: Herbold
authors.forename: S
authors.initials: S
authors.lastname: Jin