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Open AccessArticle

Modeling and Design of SHPB to Characterize Brittle Materials under Compression for High Strain Rates

1
Institute of Structural Analysis, Poznan University of Technology, Piotrowo 5, 60-965 Poznań, Poland
2
Laboratory of Microstructure Studies and Mechanics of Materials, UMR-CNRS 7239, Lorraine University, 7 rue Félix Savart, BP 15082, 57073 Metz CEDEX 03, France
3
Department of Mechanical Engineering, Chair of Excellence Universidad Carlos III de Madrid, Avda. de la Universidad 30, 28911 Leganés, Madrid, Spain
4
Computational Solid Mechanics Laboratory, Louisiana State University, Baton Rouge, LA 70803, USA
*
Author to whom correspondence should be addressed.
Materials 2020, 13(9), 2191; https://doi.org/10.3390/ma13092191
Received: 2 April 2020 / Revised: 3 May 2020 / Accepted: 6 May 2020 / Published: 10 May 2020
(This article belongs to the Special Issue High Performance Concrete)
This paper presents an analytical prediction coupled with numerical simulations of a split Hopkinson pressure bar (SHPB) that could be used during further experiments to measure the dynamic compression strength of concrete. The current study combines experimental, modeling and numerical results, permitting an inverse method by which to validate measurements. An analytical prediction is conducted to determine the waves propagation present in SHPB using a one-dimensional theory and assuming a strain rate dependence of the material strength. This method can be used by designers of new SPHB experimental setups to predict compressive strength or strain rates reached during tests, or to check the consistencies of predicted results. Numerical simulation results obtained using LS-DYNA finite element software are also presented in this paper, and are used to compare the predictions with the analytical results. This work focuses on an SPHB setup that can accurately identify the strain rate sensitivities of concrete or brittle materials. View Full-Text
Keywords: concrete; dynamic compression; Split Hopkinson Pressure Bars (SPHB); brittle materials; simulation concrete; dynamic compression; Split Hopkinson Pressure Bars (SPHB); brittle materials; simulation
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MDPI and ACS Style

Jankowiak, T.; Rusinek, A.; Voyiadjis, G.Z. Modeling and Design of SHPB to Characterize Brittle Materials under Compression for High Strain Rates. Materials 2020, 13, 2191.

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