FEM analysis on the &quot;self-sharpening&quot; behavior of tungsten   fiber/metallic glass matrix composite long rod

doi:10.1016/j.ijimpeng.2015.07.006

CORC > 北京大学 > 工学院

	FEM analysis on the "self-sharpening" behavior of tungsten fiber/metallic glass matrix composite long rod
	Li, J. C. ; Chen, X. W. ; Huang, F. L.
刊名	INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
	2015
关键词	Tungsten fiber/metallic glass matrix (WF/MG) composite Penetration Self-sharpening FEM simulation ENERGY PENETRATOR MATERIALS BULK METALLIC GLASSES BALLISTIC PENETRATORS STRAIN RATES INHOMOGENEOUS DEFORMATION DYNAMIC DEFORMATION WIDE-RANGE ALLOY ROD IMPACT SIMULATIONS
DOI	10.1016/j.ijimpeng.2015.07.006
英文摘要	In the present manuscript the geornetrical model of tungsten fiber/metallic glass matrix (WF/MG) composite long rod is established based on the microstructure of composite, and a modified coupled thermo-mechanical constitutive model is employed to describe the high strength and high shear sensitivity of metallic glass (MG) matrix. Then the finite element method (FEM) simulations on the penetration of WF/MG composite long rod into the steel targets are conducted by integrating with related penetrating tests. The effects of impact velocity, target strength and initial shape of rod nose on the "self-sharpening" property of rod and the consequent penetrating performance are discussed in detail. Corresponding analysis shows that due to the high shear sensitivity of MG matrix, a significant "self-sharpening" behavior occurs in the composite rod, and the rod nose maintains as a sharp shape during the penetration. Comparatively, for-the tungsten heavy alloy (WHA) rod, the nose blunts as a "mushroom" shape due to the relatively high plasticity of material. The "self-sharpening" behavior leads to a relatively lower resistance for the rod, and thus the composite rod achieves a much better penetrating performance compared with the WHA one. Moreover, the impact velocity and the target strength play an important role for the "self-sharpening" property and the consequent penetrating performance of the WF/MG composite long rod, whereas the initial nose shape has a relatively slight effect. (C) 2015 Elsevier Ltd. All rights reserved.; Science and Technology Development Foundation [2015B0201025]; key subject "Computational Solid Mechanics" of China Academy of Engineering Physics; National Outstanding Young Scientists Foundation of China [11225213]; National Natural Science Foundation of China [11221202]; SCI(E); EI; ARTICLE; chenxiaoweintu@yahoo.com; 67-83; 86
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/424650]
专题	工学院
推荐引用方式 GB/T 7714	Li, J. C.,Chen, X. W.,Huang, F. L.. FEM analysis on the "self-sharpening" behavior of tungsten fiber/metallic glass matrix composite long rod[J]. INTERNATIONAL JOURNAL OF IMPACT ENGINEERING,2015.
APA	Li, J. C.,Chen, X. W.,&Huang, F. L..(2015).FEM analysis on the "self-sharpening" behavior of tungsten fiber/metallic glass matrix composite long rod.INTERNATIONAL JOURNAL OF IMPACT ENGINEERING.
MLA	Li, J. C.,et al."FEM analysis on the "self-sharpening" behavior of tungsten fiber/metallic glass matrix composite long rod".INTERNATIONAL JOURNAL OF IMPACT ENGINEERING (2015).