Dispersive wave propagation in disordered flexible fibers enhances stress attenuation

Abstract

We experimentally and computationally analyze impact-shock-induced stress wave propagation in packings of disordered flexible fibers. We find that dispersive wave propagation, associated with large stress attenuation, occurs much more prevalently in systems with larger fiber aspect ratios and moderate fiber flexibility. We trace these features to the microstructural properties of fiber contact chains and the energy-trapping abilities of deformable fibers. These findings provide new insights into physics of the shock-impacted flexible fiber packings and open the way towards an improved granular-material-based damping technology.

6 pages, 6 figures

References in corpus (6)

• Highly Nonlinear Wave Propagation in Elastic Woodpile Periodic Structures
• Jamming of 3D Prolate Granular Materials
• Jamming of semiflexible polymers
• Traveling Waves and their Tails in Locally Resonant Granular Systems
• Micromechanical origin of plasticity and hysteresis in nest-like packings
• Self-Ordering of Buckling, Bending, Bumping Beams