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A platform for research: civil engineering, architecture and urbanism
Influence of friction on the dynamic increase factor of concrete compressive strength in a split Hopkinson pressure bar test
https://orcid.org/0000-0002-4787-4990
https://orcid.org/0000-0002-8768-936X
https://orcid.org/0000-0001-7259-9209
Abstract This study includes the experimental and numerical research conducted to establish a standardized lubrication technique for a concrete split Hopkinson pressure bar (SHPB) test. Concrete SHPB tests were conducted using different quantities of high-vacuum grease, petroleum jelly, and Teflon to determine a desirable lubrication method. Subsequently, follow-up concrete SHPB tests with different specimen dimensions were performed to validate the proposed lubrication method and obtain a dynamic increase factor (DIF) exclusively with respect to the rate effect (that is, pure rate DIF). Furthermore, the pure rate DIF was verified through finite element analysis of the SHPB tests. The experimental and numerical outcomes demonstrated that the frictional effect was eliminated in the concrete SHPB test when a lubricant more than or equal to 12 mg/cm2 was applied to the specimen irrespective of the lubricant type.
Highlights The effect of lubrication on friction in a concrete SHPB test was examined. A lubrication technique to remove the frictional effect in SHPB test was suggested. Pure rate DIF without frictional and inertial effects was obtained. The lubrication method and pure rate DIF were verified through numerical analysis.
Influence of friction on the dynamic increase factor of concrete compressive strength in a split Hopkinson pressure bar test
https://orcid.org/0000-0002-4787-4990
https://orcid.org/0000-0002-8768-936X
https://orcid.org/0000-0001-7259-9209
Abstract This study includes the experimental and numerical research conducted to establish a standardized lubrication technique for a concrete split Hopkinson pressure bar (SHPB) test. Concrete SHPB tests were conducted using different quantities of high-vacuum grease, petroleum jelly, and Teflon to determine a desirable lubrication method. Subsequently, follow-up concrete SHPB tests with different specimen dimensions were performed to validate the proposed lubrication method and obtain a dynamic increase factor (DIF) exclusively with respect to the rate effect (that is, pure rate DIF). Furthermore, the pure rate DIF was verified through finite element analysis of the SHPB tests. The experimental and numerical outcomes demonstrated that the frictional effect was eliminated in the concrete SHPB test when a lubricant more than or equal to 12 mg/cm2 was applied to the specimen irrespective of the lubricant type.
Highlights The effect of lubrication on friction in a concrete SHPB test was examined. A lubrication technique to remove the frictional effect in SHPB test was suggested. Pure rate DIF without frictional and inertial effects was obtained. The lubrication method and pure rate DIF were verified through numerical analysis.
Influence of friction on the dynamic increase factor of concrete compressive strength in a split Hopkinson pressure bar test
https://orcid.org/0000-0002-4787-4990
https://orcid.org/0000-0002-8768-936X
https://orcid.org/0000-0001-7259-9209
Abstract This study includes the experimental and numerical research conducted to establish a standardized lubrication technique for a concrete split Hopkinson pressure bar (SHPB) test. Concrete SHPB tests were conducted using different quantities of high-vacuum grease, petroleum jelly, and Teflon to determine a desirable lubrication method. Subsequently, follow-up concrete SHPB tests with different specimen dimensions were performed to validate the proposed lubrication method and obtain a dynamic increase factor (DIF) exclusively with respect to the rate effect (that is, pure rate DIF). Furthermore, the pure rate DIF was verified through finite element analysis of the SHPB tests. The experimental and numerical outcomes demonstrated that the frictional effect was eliminated in the concrete SHPB test when a lubricant more than or equal to 12 mg/cm2 was applied to the specimen irrespective of the lubricant type.
Highlights The effect of lubrication on friction in a concrete SHPB test was examined. A lubrication technique to remove the frictional effect in SHPB test was suggested. Pure rate DIF without frictional and inertial effects was obtained. The lubrication method and pure rate DIF were verified through numerical analysis.
Influence of friction on the dynamic increase factor of concrete compressive strength in a split Hopkinson pressure bar test
Kim, Kyoung-Min (author) / Lee, Sangho (author) / Cho, Jae-Yeol (author)
2022-03-27
Article (Journal)
Electronic Resource
English
Dynamic Brazilian test of concrete using split Hopkinson pressure bar
| Springer Verlag | 2016
Dynamic Brazilian test of concrete using split Hopkinson pressure bar
| Online Contents | 2017
Dynamic Brazilian test of concrete using split Hopkinson pressure bar
| Online Contents | 2016