摘要
利用Eshelby等效夹杂法(equivalent inclusion method, EIM)处理非均匀夹杂.考虑了固有本征应变的影响,显式地推导出了不同种类位错与非均匀夹杂的相互作用能.以空洞为例,将所得结果与分子动力学(molecular dynamics, MD)模拟计算值进行了比较,验证了模型的有效性.充分讨论了模型的应用范围,并系统比较了夹杂本征应变与弹性常数对位错-夹杂体系反应能的影响.
Eshelby’s equivalent inclusion method(EIM)were used to address the inhomogeneous inclusion problem while considering the effects of the intrinsic eigenstrain.The interaction energy between screw/edge dislocations and inhomogeneous inclusions were explicitly derived.To validate the model,the results of dislocation-void interactions were compared with the results of molecular dynamics(MD)simulations.The model’s capacity were fully evaluated and the effects of inclusion parameters were discussed,including the intrinsic eigenstrain and elastic constant.
作者
丁高文
李志远
李阳
DING Gaowen;LI Zhiyuan;LI Yang(School of Mechanics and Engineering Science,Shanghai University,Shanghai 200444,China;Shanghai Institute of Applied Mathematics and Mechanics,Shanghai University,Shanghai 200072,China;Shanghai Institute of Aircraft Mechanics and Control,Shanghai 200092,China)
出处
《上海大学学报（自然科学版）》
CAS
CSCD
北大核心
2024年第5期890-903,共14页
Journal of Shanghai University:Natural Science Edition
基金
国家自然科学基金资助项目(12302279)
上海高校Ⅳ类高峰学科建设资助项目。
关键词
本征应变
位错
非均匀夹杂
Eshelby等效夹杂法
eigenstrain
dislocation
inhomogeneous inclusion
Eshelby’s equivalent inclusion method(EIM)
