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Energy dissipation in pearlitic steel under impact loading

文献类型：期刊论文

作者Wang J(王军)4; Ma ZW(马知未)3; Ding G(丁淦)4; Yang R(杨荣)4; Cai SL(蔡松林)4; Dai LH(戴兰宏)2,4; Jiang MQ(蒋敏强)2,4; Lu, Chunsheng1
刊名ACTA MATERIALIA
出版日期2025
卷号284页码:12
关键词Pearlitic steel Impact loading Energy dissipation Heat Molecular dynamics
ISSN号1359-6454
DOI10.1016/j.actamat.2024.120599
通讯作者Jiang, Minqiang(mqjiang@imech.ac.cn) ; Lu, Chunsheng(C.Lu@curtin.edu.cn)
英文摘要Energy dissipation plays a crucial role in the mechanical performance of pearlitic steel, particularly as structural materials subjected to impact loading. However, quantitatively distinguishing various dissipative mechanisms remains a great challenge due to the extremely short temporal and small spatial scales of shock deformation. In this paper, we address this challenge by performing molecular dynamics simulations of pearlitic steel under planar shock waves, generated by a piston moving at constant velocities. It is revealed that, the ratio of energy dissipation to input energy is inversely correlated with the piston velocity. The shock energy dissipates via the heat and structural contributions. The former accounts for 100 % of the dissipation for pure elastic deformation, while it still consumes >93 % of the dissipation when the deformation occurs beyond elasticity. In structural dissipation, the main contributor is the formation of new surfaces due to voids and spallation.
分类号一类
WOS关键词MOLECULAR-DYNAMICS ; STRENGTH ; THERMODYNAMICS ; CEMENTITE ; DAMAGE ; SIZE
资助项目CAS Project for Young Scientists in Basic Research[YSBR-096] ; National Outstanding Youth Science Fund Project[12125206] ; Basic Science Center for Multiscale Problems in Nonlinear Mechanics[11988102] ; Major International Joint Research Project[W2411003] ; General Project of NSFC[11972345] ; National Key Basic Research Program of China[2020YFA0406101] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0620101] ; Australian Government ; Government of Western Australia
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001374411700001
资助机构CAS Project for Young Scientists in Basic Research ; National Outstanding Youth Science Fund Project ; Basic Science Center for Multiscale Problems in Nonlinear Mechanics ; Major International Joint Research Project ; General Project of NSFC ; National Key Basic Research Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Australian Government ; Government of Western Australia
其他责任者Jiang, Minqiang ; Lu, Chunsheng
源URL[http://dspace.imech.ac.cn/handle/311007/97792]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Curtin Univ, Sch Civil & Mech Engn, Perth, WA 6845, Australia
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China;
3.Yuncheng Univ, Dept Phys & Elect Engn, Yuncheng 044000, Peoples R China;
4.Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Inst Mech, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Wang J,Ma ZW,Ding G,et al. Energy dissipation in pearlitic steel under impact loading[J]. ACTA MATERIALIA,2025,284:12.
APA 王军.,马知未.,丁淦.,杨荣.,蔡松林.,...&Lu, Chunsheng.(2025).Energy dissipation in pearlitic steel under impact loading.ACTA MATERIALIA,284,12.
MLA 王军,et al."Energy dissipation in pearlitic steel under impact loading".ACTA MATERIALIA 284(2025):12.

入库方式： OAI收割

来源：力学研究所

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