Experimental and numerical investigation on the deformation and failure behavior in the Taylor test

被引：47

作者：

Xiao, Xinke ^{[1
]}

Zhang, Wei ^{[1
]}

Wei, Gang ^{[1
]}

Mu, Zhongcheng ^{[1
]}

Guo, Zitao ^{[1
]}

机构：

[1] Harbin Inst Technol, Hyperveloc Impact Res Ctr, Harbin 150080, Peoples R China

来源：

MATERIALS & DESIGN | 2011年 / 32卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Non-ferros metals and alloys; Fracture; Impact and ballistic; HIGH-VELOCITY PERFORATION; DUCTILE FRACTURE; ELEVATED-TEMPERATURES; STRESS TRIAXIALITY; STRAIN RATES; STEEL PLATES; IMPACT TEST; PROJECTILES; MECHANISMS; STRENGTH;

D O I：

10.1016/j.matdes.2011.01.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present paper presents an experimental and numerical study concerning the deformation and failure behavior in the Taylor impact test. Projectiles manufactured from a commercial high strength and superhard aluminum alloy 7A04-T6 with a nominal diameter of 12.6 mm and a length of 50.8 mm were fired against a hardened tool steel plate by a one- and two-stage compressed gas gun within the velocity range of 175-370 m/s. Three different deformation and failure modes were observed from the test: mushrooming, shear cracking and fragmentation. Individual velocity ranges and the transitions between the deformation/failure modes are identified by both experiments and numerical simulations. Slightly modified Johnson-Cook models of strength and accumulative damage failure are employed in 3D numerical simulations to describe material behavior of the striking cylinders. Good agreement between the numerical simulations and the experimental results was found. Detailed computational results of each scenario are offered to understand the deformation and failure mechanisms. (C) 2011 Elsevier Ltd All rights reserved.

引用

页码：2663 / 2674

页数：12

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