Statistically heterogeneous size distribution of ejecta from shock-loaded Cu with a wedged surface groove. (12th January 2016)

• Record Type: Journal Article
• Authors: He, An-Min; Wang, Pei; Shao, Jian-Li
• Is Part Of: Modelling and simulation in materials science and engineering. Volume 24:Number 2(2016)
• Publication Date: 2016-01-12
• Subjects: molecular dynamics -- ejecta distribution -- heterogeneous fragmentation; Materials -- Mathematical models -- Periodicals; Matériaux -- Modèles mathématiques -- Périodiques; Materials -- Mathematical models; Periodicals; 620.00113
• DOI: 10.1088/0965-0393/24/2/025002
• Languages: English
• ISSNs: 0965-0393

Abstract

Abstract: Large-scale molecular dynamics simulations are performed to study the fragmentation of microsheets produced from single crystal Cu with a wedged surface groove. Heterogeneous fragmentation of the microsheet is observed and the ejecta size distribution in the large size limit obeys a bilinear exponential dependence, consistent with the geometric fragmentation model with statistical heterogeneity. The underlying mechanisms governing the statistical heterogeneity are illustrated within the frameworks of geometric fragmentation models.