3D-Hopkinson bar: New experiments for dynamic testing on soils

Jean François Semblat; Minh Phong Luong; Gerard Gary

doi:10.3208/sandf.39.1

3D-Hopkinson bar: New experiments for dynamic testing on soils

Jean François Semblat, Minh Phong Luong, Gerard Gary

Research output: Contribution to journal › Article › peer-review

Abstract

The Split Hopkinson Pressure Bar method (S.H.P.B) provides a ready means for direct analysis of material dynamic response. Soil specimens generally present poor mechanical properties, thus the classical experimental device has to be adapted. An original experimental arrangement "Three-Dimensional Split Hopkinson Pressure Bar" (3D-SHPB) is proposed. It allows measurement of the complete three-dimensional dynamic response of soils. Experiments are oedometric type tests (rigid confining cylinder) involving dynamic radial stress measurement. Pseudo Poisson's ratio is then determined and the influence of strain rate is shown. In addition, other types of confining systems are used: soft and semi-rigid confinement and low impedance tests are performed. Results on different loading paths are compared with others on sands and clays. Analysis at grain-size level gives further elements on the comminution process.

Original language	English
Pages (from-to)	1-10
Number of pages	10
Journal	Soils and Foundations
Volume	39
Issue number	1
DOIs	https://doi.org/10.3208/sandf.39.1
Publication status	Published - 1 Jan 1999
Externally published	Yes

Keywords

Dynamic response
Fracture energy
Granular material
Hopkinson bar
Pseudo poisson's ratio
Soil dynamics
Stress path (IGC: D7/e8)

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10.3208/sandf.39.1

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abstract = "The Split Hopkinson Pressure Bar method (S.H.P.B) provides a ready means for direct analysis of material dynamic response. Soil specimens generally present poor mechanical properties, thus the classical experimental device has to be adapted. An original experimental arrangement {"}Three-Dimensional Split Hopkinson Pressure Bar{"} (3D-SHPB) is proposed. It allows measurement of the complete three-dimensional dynamic response of soils. Experiments are oedometric type tests (rigid confining cylinder) involving dynamic radial stress measurement. Pseudo Poisson's ratio is then determined and the influence of strain rate is shown. In addition, other types of confining systems are used: soft and semi-rigid confinement and low impedance tests are performed. Results on different loading paths are compared with others on sands and clays. Analysis at grain-size level gives further elements on the comminution process.",

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T2 - New experiments for dynamic testing on soils

AU - Semblat, Jean François

AU - Luong, Minh Phong

AU - Gary, Gerard

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AB - The Split Hopkinson Pressure Bar method (S.H.P.B) provides a ready means for direct analysis of material dynamic response. Soil specimens generally present poor mechanical properties, thus the classical experimental device has to be adapted. An original experimental arrangement "Three-Dimensional Split Hopkinson Pressure Bar" (3D-SHPB) is proposed. It allows measurement of the complete three-dimensional dynamic response of soils. Experiments are oedometric type tests (rigid confining cylinder) involving dynamic radial stress measurement. Pseudo Poisson's ratio is then determined and the influence of strain rate is shown. In addition, other types of confining systems are used: soft and semi-rigid confinement and low impedance tests are performed. Results on different loading paths are compared with others on sands and clays. Analysis at grain-size level gives further elements on the comminution process.

KW - Dynamic response

KW - Fracture energy

KW - Granular material

KW - Hopkinson bar

KW - Pseudo poisson's ratio

KW - Soil dynamics

KW - Stress path (IGC: D7/e8)

U2 - 10.3208/sandf.39.1

DO - 10.3208/sandf.39.1

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JO - Soils and Foundations

JF - Soils and Foundations

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ER -

3D-Hopkinson bar: New experiments for dynamic testing on soils

Abstract

Keywords

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