Elastic–Plastic Wave Propagation in Uniform and Periodic Granular Chains

Autor:	Hayden Burgoyne, Chiara Daraio
Rok vydání:	2015
Předmět:	Physics Bar (music) Wave propagation Mechanical Engineering Split-Hopkinson pressure bar Mechanics Plasticity Condensed Matter Physics Discrete element method Pulse (physics) Amplitude Classical mechanics Mechanics of Materials Laser Doppler vibrometer
Zdroj:	Journal of Applied Mechanics. 82
ISSN:	1528-9036 0021-8936
Popis:	We investigate the properties of high-amplitude stress waves propagating through chains of elastic–plastic particles using experiments and simulations. We model the system after impact using discrete element method (DEM) with strain-rate dependent contact interactions. Experiments are performed on a Hopkinson bar coupled with a laser vibrometer. The bar excites chains of 50 identical particles and dimer chains of two alternating materials. After investigating how the speed of the initial stress wave varies with particle properties and loading amplitude, we provide an upper bound for the leading pulse velocity that can be used to design materials with tailored wave propagation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb577851bbcb55ef3be78f0576d14411 https://doi.org/10.1115/1.4030458 Zobrazit plný text záznamu