The dynamic fracture and fragmentation of OFHC Cu under 1-D fast tension

GUI Yu-lin; SUN Cheng-wei; LU Zhong-hua; LI Qiang; ZHANG Guang-sheng

doi:10.11883/1001-1455(2007)01-0040-05

Volume 27 Issue 1

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GUI Yu-lin, SUN Cheng-wei, LU Zhong-hua, LI Qiang, ZHANG Guang-sheng. The dynamic fracture and fragmentation of OFHC Cu under 1-D fast tension[J]. Explosion And Shock Waves, 2007, 27(1): 40-44. doi: 10.11883/1001-1455(2007)01-0040-05

Citation:

GUI Yu-lin, SUN Cheng-wei, LU Zhong-hua, LI Qiang, ZHANG Guang-sheng. The dynamic fracture and fragmentation of OFHC Cu under 1-D fast tension[J]. Explosion And Shock Waves, 2007, 27(1): 40-44. doi: 10.11883/1001-1455(2007)01-0040-05

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The dynamic fracture and fragmentation of OFHC Cu under 1-D fast tension

doi: 10.11883/1001-1455(2007)01-0040-05

1.
Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China;
2.
Institute of Structural Mechanics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China

Publish Date: 2007-01-25

Abstract

Abstract

The dynamic tension experiments of OFHC Cu rings at different voltages were carried out by electromagnetically driven expansion technique. The plastic instability, i.e. multiple necking fracture before the fragmentation was fundamentally analyzed, and the fragments distribution was obtained from the energy balance theory. The 3-D numerical simulation shows that the temperature rise of necking region is higher than that of no-necking region. The multiple necking fracture distribution on the circumference yields to random Poisson distribution.
- solid mechanics,
- dynamic fracture and fragmentation,
- electromagnetically driven ring expansion,
- OFHC Cu,
- multiple necking fracture,
- numerical simulation