Issue
DYMAT 2009
Volume 2, 2009
DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
Page(s) 1685 - 1692
Section Numerical Simulations
DOI https://doi.org/10.1051/dymat/2009238
Published online 15 September 2009
DYMAT 2009 (2009) 1685-1692
DOI: 10.1051/dymat/2009238

Numerical simulations of SHPB tests using 921A steel pure shear hat-shaped specimens

J.C. Li, X.W. Chen and G. Chen

Institute of Structural Mechanics, China Academy of Engineering Physics, PO Box 919-401, Mianyang City, Sichuan Province 621900, P.R. China

chenxiaoweintu@yahoo.com

Published online: 15 September 2009

Abstract
A series of numerical simulations of SHPB tests using 921A steel pure shear hat-shaped specimens are conducted with ANSYS/LS-DYNA and validated by the SHPB tests in the present paper. Integrated with the theory of stress wave propagation in a SHPB system, the wave propagation in the bars and the dynamic deformations of the specimen under different loading rates V0 (or stress pulses σI(t)) are analyzed, and typical strain wave shapes are identified for different loading rates. Numerical tests of SHPB under ultra-high strain rates (~106 s−1) are specially conducted, which is unable to do realistically. The different deformations and failures of the specimens under different loading rates are also distinguished.



© EDP Sciences 2009