Dynamic shear characteristics of titanium alloy Ti-6Al-4V at large strain rates by the split Hopkinson pressure bar test

Tianfeng Zhou; Junjie Wu; Jiangtao Che; Ying Wang; Xibin Wang

doi:10.1016/j.ijimpeng.2017.06.007

Dynamic shear characteristics of titanium alloy Ti-6Al-4V at large strain rates by the split Hopkinson pressure bar test

Tianfeng Zhou^*, Junjie Wu, Jiangtao Che, Ying Wang, Xibin Wang

^*Corresponding author for this work

School of Mechanical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

68 Citations (Scopus)

Abstract

The focus of this paper is the dynamic shear characteristics of titanium alloy Ti-6Al-4V at large strain rates. Dynamic load testing of titanium alloy Ti-6Al-4V are performed by the split Hopkinson pressure bar (SHPB) at different strain rates, which involve the SHPB compression test and the SHPB shear test. The material behaviour during the tests are measured and recorded. The strain rates for the compression and shear tests range from 5.0 × 10² s⁻¹ to 9.0 × 10³ s⁻¹ and 1.0 × 10⁴ s⁻¹ to 3.0 × 10⁵ s⁻¹, respectively. The effect of competing mechanisms—strain rate hardening and thermal softening—on the adiabatic shear band is analysed. A size effect on shear band width is also found. According to the results, a modified Johnson–Cook (J–C) constitutive model is applied to tests at an ultrahigh strain rate. Furthermore, a finite element method (FEM) simulation is conducted to validate different aspects of the methodology. The SHPB shear test is confirmed as a process of pure shear. A comparison of the shear stress-strain curves from the mechanical tests and simulation show good agreement based on the modified J-C constitutive model.

Original language	English
Pages (from-to)	167-177
Number of pages	11
Journal	International Journal of Impact Engineering
Volume	109
DOIs	https://doi.org/10.1016/j.ijimpeng.2017.06.007
Publication status	Published - Nov 2017

Keywords

FEM simulation
Johnson–Cook constitutive model
SHPB test
Shear band
Strain rate

Access to Document

10.1016/j.ijimpeng.2017.06.007

Cite this

@article{a422103cf28241aa8859ac98548e8e9a,

title = "Dynamic shear characteristics of titanium alloy Ti-6Al-4V at large strain rates by the split Hopkinson pressure bar test",

abstract = "The focus of this paper is the dynamic shear characteristics of titanium alloy Ti-6Al-4V at large strain rates. Dynamic load testing of titanium alloy Ti-6Al-4V are performed by the split Hopkinson pressure bar (SHPB) at different strain rates, which involve the SHPB compression test and the SHPB shear test. The material behaviour during the tests are measured and recorded. The strain rates for the compression and shear tests range from 5.0 × 102 s−1 to 9.0 × 103 s−1 and 1.0 × 104 s−1 to 3.0 × 105 s−1, respectively. The effect of competing mechanisms—strain rate hardening and thermal softening—on the adiabatic shear band is analysed. A size effect on shear band width is also found. According to the results, a modified Johnson–Cook (J–C) constitutive model is applied to tests at an ultrahigh strain rate. Furthermore, a finite element method (FEM) simulation is conducted to validate different aspects of the methodology. The SHPB shear test is confirmed as a process of pure shear. A comparison of the shear stress-strain curves from the mechanical tests and simulation show good agreement based on the modified J-C constitutive model.",

keywords = "FEM simulation, Johnson–Cook constitutive model, SHPB test, Shear band, Strain rate",

author = "Tianfeng Zhou and Junjie Wu and Jiangtao Che and Ying Wang and Xibin Wang",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = nov,

doi = "10.1016/j.ijimpeng.2017.06.007",

language = "English",

volume = "109",

pages = "167--177",

journal = "International Journal of Impact Engineering",

issn = "0734-743X",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - Dynamic shear characteristics of titanium alloy Ti-6Al-4V at large strain rates by the split Hopkinson pressure bar test

AU - Zhou, Tianfeng

AU - Wu, Junjie

AU - Che, Jiangtao

AU - Wang, Ying

AU - Wang, Xibin

PY - 2017/11

Y1 - 2017/11

N2 - The focus of this paper is the dynamic shear characteristics of titanium alloy Ti-6Al-4V at large strain rates. Dynamic load testing of titanium alloy Ti-6Al-4V are performed by the split Hopkinson pressure bar (SHPB) at different strain rates, which involve the SHPB compression test and the SHPB shear test. The material behaviour during the tests are measured and recorded. The strain rates for the compression and shear tests range from 5.0 × 102 s−1 to 9.0 × 103 s−1 and 1.0 × 104 s−1 to 3.0 × 105 s−1, respectively. The effect of competing mechanisms—strain rate hardening and thermal softening—on the adiabatic shear band is analysed. A size effect on shear band width is also found. According to the results, a modified Johnson–Cook (J–C) constitutive model is applied to tests at an ultrahigh strain rate. Furthermore, a finite element method (FEM) simulation is conducted to validate different aspects of the methodology. The SHPB shear test is confirmed as a process of pure shear. A comparison of the shear stress-strain curves from the mechanical tests and simulation show good agreement based on the modified J-C constitutive model.

AB - The focus of this paper is the dynamic shear characteristics of titanium alloy Ti-6Al-4V at large strain rates. Dynamic load testing of titanium alloy Ti-6Al-4V are performed by the split Hopkinson pressure bar (SHPB) at different strain rates, which involve the SHPB compression test and the SHPB shear test. The material behaviour during the tests are measured and recorded. The strain rates for the compression and shear tests range from 5.0 × 102 s−1 to 9.0 × 103 s−1 and 1.0 × 104 s−1 to 3.0 × 105 s−1, respectively. The effect of competing mechanisms—strain rate hardening and thermal softening—on the adiabatic shear band is analysed. A size effect on shear band width is also found. According to the results, a modified Johnson–Cook (J–C) constitutive model is applied to tests at an ultrahigh strain rate. Furthermore, a finite element method (FEM) simulation is conducted to validate different aspects of the methodology. The SHPB shear test is confirmed as a process of pure shear. A comparison of the shear stress-strain curves from the mechanical tests and simulation show good agreement based on the modified J-C constitutive model.

KW - FEM simulation

KW - Johnson–Cook constitutive model

KW - SHPB test

KW - Shear band

KW - Strain rate

UR - http://www.scopus.com/inward/record.url?scp=85021378855&partnerID=8YFLogxK

U2 - 10.1016/j.ijimpeng.2017.06.007

DO - 10.1016/j.ijimpeng.2017.06.007

M3 - Article

AN - SCOPUS:85021378855

SN - 0734-743X

VL - 109

SP - 167

EP - 177

JO - International Journal of Impact Engineering

JF - International Journal of Impact Engineering

ER -

Dynamic shear characteristics of titanium alloy Ti-6Al-4V at large strain rates by the split Hopkinson pressure bar test

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this