Stress Wave Anisotropy in Centered Square Highly Nonlinear Granular Systems
- Creators
- Leonard, A.
-
Daraio, C.
Abstract
Highly ordered, close packed granular systems present a nonlinear dynamic behavior stemming from the Hertzian contact interaction between particles. We investigated the propagation of elastic stress waves in an uncompressed, centered square array of spherical and cylindrical particles. We show, via experiments and numerical simulations, that systematic variations of the mass and stiffness ratios of the spherical and cylindrical particles lead to large variations in the characteristics of the propagating stress wave fronts traveling through the system. The ability to control the stress wave front properties in these granular systems may allow for the development of new wave-tailoring materials including systems capable of redirecting impact energy.
Additional Information
© 2012 American Physical Society. Received 12 October 2011; revised manuscript received 30 January 2012; published 21 May 2012. This work was supported by an award from the Department of Energy Office of Science (DOE SCGF), the NSF (844540), and Army Research Office MURI grant US ARO W911NF-09-1-0436.Attached Files
Published - Leonard2012p18502Phys_Rev_Lett.pdf
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Additional details
- Eprint ID
- 31969
- Resolver ID
- CaltechAUTHORS:20120620-083550560
- Department of Energy (DOE)
- NSF
- CMMI-844540
- Army Research Office (ARO)
- W911NF-09-1-0436
- Created
-
2012-06-20Created from EPrint's datestamp field
- Updated
-
2021-11-09Created from EPrint's last_modified field