Coupling of dynamic ductile damage and melting in shock-induced micro-spalling: Modeling and applications

doi:10.1016/j.ijplas.2020.102849

	Coupling of dynamic ductile damage and melting in shock-induced micro-spalling: Modeling and applications
	Xiang, Meizhen 1; Jiang, Songqing 1; Cui, Junzhi 2; Xu, Yun 1; Chen, Jun 1
刊名	INTERNATIONAL JOURNAL OF PLASTICITY
	2021
卷号	136 页码:33
关键词	Ductile damage Temperature effects Melting kinetics Spalling Shock
ISSN号	0749-6419
DOI	10.1016/j.ijplas.2020.102849
英文摘要	Micro-spalling is a dynamic fragmentation process that is coupled with shock-induced overheating and melting. It has been observed in series of shock experiments and in several modern industrial applications such as inertial confinement fusion and laser-shock surface micromachining. Modeling micro-spalling is beyond the scope of traditional damage mechanics which ignores solid-liquid transformation. Here, for the first time, we develop a continuum model of micro-spalling by coupling hydroelastic-plastic-damage mechanics and high-pressure melting kinetics. A two-scale framework is proposed for modeling mechanical responses of partially melted materials in shock-induced micro-spalling. Temperature and pressure dependence of shock-induced melting rate is formulated. In modeling dynamic ductile damage, temperature and (partial) melting effects are involved. The model is implemented into a finite element code and used as a predictive tool to simulate plate impact spalling experiments on aluminum. The simulations reveal typical characteristics of micro-spalling resulted from coupling effects of dynamic damage and melting, concerning evolutions of damage and phase distributions and thermodynamic paths. The simulations are in good agreement with previous experiments and molecular dynamics simulations. Particularly, the calculated free surface velocity profiles and spall strengths are quantitatively consistent with experimental measurements in a wide range of initial temperature up to the melting point. These results indicate that the present model is a reasonable uniform description of spalling process, covering transition from classical solid spalling to melting-accomplished micro-spalling.
资助项目	National Natural Science Foundation of China[11772068] ; Presidential Foundation of China Academy of Engineering Physics[YZJJLX2017011]
WOS研究方向	Engineering ; Materials Science ; Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000595364000004
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/52513]
专题	中国科学院数学与系统科学研究院
通讯作者	Xiang, Meizhen; Chen, Jun
作者单位	1.Inst Appl Phys & Computat Math, Lab Computat Phys, Beijing 100088, Peoples R China 2.Chinese Acad Sci, Acad Math & Syst Sci, ICMSEC, LSEC, Beijing 100090, Peoples R China
推荐引用方式 GB/T 7714	Xiang, Meizhen,Jiang, Songqing,Cui, Junzhi,et al. Coupling of dynamic ductile damage and melting in shock-induced micro-spalling: Modeling and applications[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2021,136:33.
APA	Xiang, Meizhen,Jiang, Songqing,Cui, Junzhi,Xu, Yun,&Chen, Jun.(2021).Coupling of dynamic ductile damage and melting in shock-induced micro-spalling: Modeling and applications.INTERNATIONAL JOURNAL OF PLASTICITY,136,33.
MLA	Xiang, Meizhen,et al."Coupling of dynamic ductile damage and melting in shock-induced micro-spalling: Modeling and applications".INTERNATIONAL JOURNAL OF PLASTICITY 136(2021):33.