Beta
ManageSearchChatDiscover
117617

EXPERIMENTAL STUDY FOR DISPERSION AND ATTENUATION CORRECTION IN VISCOELASTIC SPLIT HOPKINSON PRESSURE BAR ARRANGEMENT

Article

Last updated: 26 Dec 2024

OverviewSimilar Items

Subjects

-

Tags

Mechanical, Power, Production, Design and Mechatronics Engineering.

Abstract

Split Hopkinson pressure Bar (SHPB) arrangement is the most practical and accurate method for studying dynamic mechanical behavior of materials under high strain rate. However in case of studying foams, and soft tissues (low impedance materials) a modified version of SHPB with bars made from a viscoelastic material like Poly methyl methacrylate PMMA acrylate is commonly used .so a good prediction of the stress waves and particle velocity acting at the interface between bars and specimen taking into account the dispersion and attenuation effect is essential. In this study the wave propagation coefficient as a function of the phase velocity and the attenuation coefficient in relation to the frequency are calculated experimentally by a set of free end bar tests using a cylindrical projectile to the circumstances of stepped velocity and different firing pressure. Correction processes for longitudinal stains related to incident and reflected waves are preceded in frequency domain using Fast Fourier Transformer (FFT) technique.

DOI

10.21608/jesaun.2016.117617

Keywords

Split Hopkinson pressure Bar (SHPB), viscoelastic, dispersion, attenuation coefficient

Authors

First Name

Reda M.

Last Name

Othman

MiddleName

-

Affiliation

Mechanical Engineering Department, Faculty of Engineering, Assiut University

Email

-

City

-

Orcid

-

First Name

Wael M.

Last Name

Khier

MiddleName

-

Affiliation

Mechanical Engineering Department, Faculty of Engineering, Assiut University

Email

-

City

-

Orcid

-

First Name

Abu-bakr A.

Last Name

Naser

MiddleName

-

Affiliation

Mechanical Engineering Department, Faculty of Engineering, Assiut University

Email

-

City

-

Orcid

-

Volume

44

Article Issue

No 5

Related Issue

16861

Issue Date

2016-09-01

Receive Date

2016-08-03

Publish Date

2016-09-01

Page Start

566

Page End

576

Print ISSN

1687-0530

Online ISSN

2356-8550

Article File

JESAUN_Volume 44_Issue No 5_Pages 566-576.pdf

PDF . 1.0MB

Link

https://jesaun.journals.ekb.eg/article_117617.html

Detail API

https://jesaun.journals.ekb.eg/service?article_code=117617

Order

5

Type

Research Paper

Type Code

1,438

Publication Type

Journal

Publication Title

JES. Journal of Engineering Sciences

Publication Link

https://jesaun.journals.ekb.eg/

MainTitle

EXPERIMENTAL STUDY FOR DISPERSION AND ATTENUATION CORRECTION IN VISCOELASTIC SPLIT HOPKINSON PRESSURE BAR ARRANGEMENT

Details

Type

Article

Created At

23 Jan 2023