Modification of SHPB setup based on wave separation technique and dynamic Saint-Venant's principle

Hui Meng; Qingming Li

doi:10.1117/12.429551

13 June 2001 Modification of SHPB setup based on wave separation technique and dynamic Saint-Venant's principle

Hui Meng, Qingming Li

Proceedings Volume 4317, Second International Conference on Experimental Mechanics; (2001) https://doi.org/10.1117/12.429551
Event: Second International Conference on Experimental Mechanics, 2000, Singapore, Singapore

Abstract

Split Hopkinson Pressure Bar (SHPB) has become a frequently used technique for measuring uniaxial compressive stress- strain relationship of various engineering material sunder high strain rate. By using the strain measurements on incident and transmit bars, the average stress, strain and strain rate histories within the specimen can be evaluated by given formulas based on 1D wave propagation theory. However, the 1D wave propagation assumption in pressure bars cannot been assured when large diameter or viscoelastic bars are used for testing brittle or cellular materials. One of the important error sources comes from the long time shift distance between the gauge position and the bar/specimen interface. This paper presents a modification of SHPB set-up based on wave separation technique and dynamic Saint- Venant's principles, which can greatly cut off the time shift distance and the pressure bar length. The proposed method is validated using numerical test based on FE simulations.

Citation Download Citation

Hui Meng and Qingming Li "Modification of SHPB setup based on wave separation technique and dynamic Saint-Venant's principle", Proc. SPIE 4317, Second International Conference on Experimental Mechanics, (13 June 2001); https://doi.org/10.1117/12.429551

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available