首页|Anelasticity to plasticity transition in a model two-dimensional amorphous solid

Anelasticity to plasticity transition in a model two-dimensional amorphous solid

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Anelasticity,as an intrinsic property of amorphous solids,plays a significant role in understanding their relaxation and deformation mechanism.However,due to the lack of long-range order in amorphous solids,the structural origin of anelasticity and its distinction from plasticity remain elusive.In this work,using frozen matrix method,we study the transition from anelasticity to plasticity in a two-dimensional model glass.Three distinct mechanical behaviors,namely,elasticity,anelasticity,and plasticity,are identified with control parameters in the amorphous solid.Through the study of finite size effects on these mechanical behaviors,it is revealed that anelasticity can be distinguished from plasticity.Anelasticity serves as an intrinsic bridge connecting the elasticity and plasticity of amorphous solids.Additionally,it is observed that anelastic events are localized,while plastic events are subextensive.The transition from anelasticity to plasticity is found to resemble the entanglement of long-range interactions between element excitations.This study sheds light on the fundamental nature of anelasticity as a key property of element excitations in amorphous solids.

amorphous soliddeformation mechanismanelasticity to plasticity transitionmolecular dynamics simulation

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Songshan Lake Materials Laboratory,Dongguan 523808,China

Guangdong Major Project of Basic and Applied Basic Research,ChinaNational Natural Science Foundation of ChinaGuangdong Basic and Applied Basic Research,ChinaPearl River Talent Recruitment Program

2019B030302010521301082021B15151400052021QN02C04

2024

10.1088/1674-1056/acf82c

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(1)
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