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Numerical Simulation the Stress Uniformity in Split Hopkinson Pressure Bar Testing

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Abstract:

The assumption of uniform stress in a test specimen is fundamental to SHPB test technique. In the present paper, a numerical simulation of wave propagation in SHPB is performed to validate the assumption. A one-dimensional model based on CSPM is firstly developed. Then the wave propagations in SHPB with various area ratios of bar/specimen are simulated. The results show that the condition of stress uniformity is not satisfied, especially at the beginning of wave propagation. For the large area specimen, the stress tends to be uniform. While for the small area specimen, the non-uniformity of stress is more apparent.

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Info:

Periodical:

Advanced Materials Research (Volumes 634-638)

Pages:

2861-2864

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.634-638.2861

Citation:

Cite this paper

Online since:

January 2013

Authors:

Hong Bin Jin

Keywords:

CSPM, Numerical Simulation, Split Hopkinson Pressure Bar (SHPB), Stress Uniformity

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