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The Hopkinson Bar

Parry, D. J.

Abstract Most materials show a significant change in mechanical behaviour as the rate of strain (the deformation rate) is increased1 (see High Strain Rate Effects). This is particularly evident at the high strain rates (>102 s −1) which occur under impact or explosive loading conditions. For polymeric materials, both the elastic modulus and the flow stress can increase substantially with strain rate. The split-Hopkinson pressure bar (SHPB) technique is the best established method for determining these dynamic properties of solids at high strain rates in the range of about 102 to 104 s−1 (see refs. 2 and 3). In its various forms, the SHPB technique can produce stress/strain/strain rate data in compression, tension and torsion.

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The Hopkinson Bar

Parry, D. J.

Abstract Most materials show a significant change in mechanical behaviour as the rate of strain (the deformation rate) is increased1 (see High Strain Rate Effects). This is particularly evident at the high strain rates (>102 s −1) which occur under impact or explosive loading conditions. For polymeric materials, both the elastic modulus and the flow stress can increase substantially with strain rate. The split-Hopkinson pressure bar (SHPB) technique is the best established method for determining these dynamic properties of solids at high strain rates in the range of about 102 to 104 s−1 (see refs. 2 and 3). In its various forms, the SHPB technique can produce stress/strain/strain rate data in compression, tension and torsion.

The Hopkinson Bar

Parry, D. J.

Abstract Most materials show a significant change in mechanical behaviour as the rate of strain (the deformation rate) is increased1 (see High Strain Rate Effects). This is particularly evident at the high strain rates (>102 s −1) which occur under impact or explosive loading conditions. For polymeric materials, both the elastic modulus and the flow stress can increase substantially with strain rate. The split-Hopkinson pressure bar (SHPB) technique is the best established method for determining these dynamic properties of solids at high strain rates in the range of about 102 to 104 s−1 (see refs. 2 and 3). In its various forms, the SHPB technique can produce stress/strain/strain rate data in compression, tension and torsion.

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Title:

The Hopkinson Bar

Contributors:

Parry, D. J. (author)

Published in:

Mechanical Properties and Testing of Polymers ; 123-126

Polymer Science and Technology Series ; 3

Publication date:

1999-01-01

Size:

4 pages

ISBN:

978-94-015-9231-4 , 978-90-481-4024-4

ISSN:

DOI:

https://doi.org/10.1007/978-94-015-9231-4_26

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Flow Stress , High Strain Rate , Maraging Steel , Transmitted Pulse , Stress Pulse Chemistry , Industrial Chemistry/Chemical Engineering , Characterization and Evaluation of Materials , Mechanics , Polymer Sciences

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