Dynamic deformation of 921A steel pure shear hat-shaped specimens in SHPB test

Ji Cheng Li; Xiao Wei Chen; Gang Chen

Dynamic deformation of 921A steel pure shear hat-shaped specimens in SHPB test

Ji Cheng Li, Xiao Wei Chen^*, Gang Chen

^*此作品的通讯作者

China Academy of Engineering Physics

科研成果: 期刊稿件 › 文章 › 同行评审

7 引用（Scopus）

摘要

A series of numerical simulations of SHPB test using 921A steel pure shear hat-shaped specimens are conducted with ANSYS/LS-DYNA and validated by the SHPB tests. Integrated with the theory of stress wave in a SHPB system, the wave propagation in the bars and the dynamic deformations of the specimen under different loading rate v₀ (or stress pulse σ_I(t)) are analyzed, and typical wave shapes are identified for different loading rates. Numerical test of SHPB under ultrahigh strain rate (10⁶ s^-1) are specially conducted, which is unable to be done realistically. The different deformation and failure of the hat-shaped specimens under different loading rate are distinguished, and the applicability of strain waves in the bars under ultrahigh loading rate is also discussed.

源语言	英语
页（从-至）	239-246
页数	8
期刊	Baozha Yu Chongji/Expolosion and Shock Waves
卷	30
期	3
出版状态	已出版 - 5月 2010
已对外发布	是

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title = "Dynamic deformation of 921A steel pure shear hat-shaped specimens in SHPB test",

abstract = "A series of numerical simulations of SHPB test using 921A steel pure shear hat-shaped specimens are conducted with ANSYS/LS-DYNA and validated by the SHPB tests. Integrated with the theory of stress wave in a SHPB system, the wave propagation in the bars and the dynamic deformations of the specimen under different loading rate v0 (or stress pulse σI(t)) are analyzed, and typical wave shapes are identified for different loading rates. Numerical test of SHPB under ultrahigh strain rate (106 s-1) are specially conducted, which is unable to be done realistically. The different deformation and failure of the hat-shaped specimens under different loading rate are distinguished, and the applicability of strain waves in the bars under ultrahigh loading rate is also discussed.",

keywords = "921A steel, Dynamic deformation, Mechanics of explosion, Pure shear hat-shaped specimen, SHPB",

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T1 - Dynamic deformation of 921A steel pure shear hat-shaped specimens in SHPB test

AU - Li, Ji Cheng

AU - Chen, Xiao Wei

AU - Chen, Gang

PY - 2010/5

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N2 - A series of numerical simulations of SHPB test using 921A steel pure shear hat-shaped specimens are conducted with ANSYS/LS-DYNA and validated by the SHPB tests. Integrated with the theory of stress wave in a SHPB system, the wave propagation in the bars and the dynamic deformations of the specimen under different loading rate v0 (or stress pulse σI(t)) are analyzed, and typical wave shapes are identified for different loading rates. Numerical test of SHPB under ultrahigh strain rate (106 s-1) are specially conducted, which is unable to be done realistically. The different deformation and failure of the hat-shaped specimens under different loading rate are distinguished, and the applicability of strain waves in the bars under ultrahigh loading rate is also discussed.

AB - A series of numerical simulations of SHPB test using 921A steel pure shear hat-shaped specimens are conducted with ANSYS/LS-DYNA and validated by the SHPB tests. Integrated with the theory of stress wave in a SHPB system, the wave propagation in the bars and the dynamic deformations of the specimen under different loading rate v0 (or stress pulse σI(t)) are analyzed, and typical wave shapes are identified for different loading rates. Numerical test of SHPB under ultrahigh strain rate (106 s-1) are specially conducted, which is unable to be done realistically. The different deformation and failure of the hat-shaped specimens under different loading rate are distinguished, and the applicability of strain waves in the bars under ultrahigh loading rate is also discussed.

KW - 921A steel

KW - Dynamic deformation

KW - Mechanics of explosion

KW - Pure shear hat-shaped specimen

KW - SHPB

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JF - Baozha Yu Chongji/Expolosion and Shock Waves

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Dynamic deformation of 921A steel pure shear hat-shaped specimens in SHPB test

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