Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session N00: Poster Session II (11:30am-2:30pm CST)
11:30 AM,
Wednesday, March 6, 2024
Room: Hall BC
Sponsoring
Unit:
APS/SPS
Abstract: N00.00151 : Yielding Transition in Active Systems*
Presenter:
Leonardo L Relmucao
(PontificiaUniversidad Catolica de Chile)
Authors:
Leonardo L Relmucao
(PontificiaUniversidad Catolica de Chile)
Carlos J Villarroel
(PontificiaUniversidad Catolica de Chile)
Gustavo Düring
(Pontif Univ Catolica de Chile)
Previous works found significant differences between passive and active systems in the study of amorphous materials at close-to-yielding transition[2]. Otherwise, those differences disappeared when we studied isolated avalanches through quasistatic models. This discrepancy may arise from the dynamic. In order to solve this, we present a model which brings together both regimes: Controlled Relaxation Time Model (CRTM). It allows the system to relax until a fixed time instead of total relaxation.
Using CRTM, we modeled an active system composed of soft disks. We characterized the dynamic through avalanche size and its correlation length and times to establish a scale relation.
[1] Vicsek, T., Zafeiris, A. (2012). Collective motion. Physics reports, 517(3-4), 71-140.
[2] Villarroel, C., D ̈uring, G. (2021). Critical yielding rheology: from externally deformed glasses to active systems. Soft Matter, 17(43), 9944-9949.
*Agencia Nacional de Investigación y Desarrollo (ANID) for the PhD scholarship and funds to attend this conference
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