Limit of strain growth in a spherical explosion vessel

Liu Wenxiang; Zhang Dezhi; Cheng Shuai; Zhong Fangping; Zhang Qingming

doi:10.11883/1001-1455(2017)06-0901-06

Volume 37 Issue 6

Sep. 2017

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Article Navigation > Explosion And Shock Waves > 2017 > 37(6): 901-906

Liu Wenxiang, Zhang Dezhi, Cheng Shuai, Zhong Fangping, Zhang Qingming. Limit of strain growth in a spherical explosion vessel[J]. Explosion And Shock Waves, 2017, 37(6): 901-906. doi: 10.11883/1001-1455(2017)06-0901-06

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Liu Wenxiang, Zhang Dezhi, Cheng Shuai, Zhong Fangping, Zhang Qingming. Limit of strain growth in a spherical explosion vessel[J]. Explosion And Shock Waves, 2017, 37(6): 901-906. doi: 10.11883/1001-1455(2017)06-0901-06

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Limit of strain growth in a spherical explosion vessel

doi: 10.11883/1001-1455(2017)06-0901-06

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2.
Key Laboratory of Intense Dynamic Loading and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024, Shaanxi, China

Received Date: 2017-01-12
Rev Recd Date: 2017-02-13
Publish Date: 2017-11-25

Abstract

Abstract

As the strain growth poses a potential hazard for the safety of an explosion vessel, it is of great importance to figure out its limit. The experiment, which was carried out in a spherical explosion vessel, shows that the maximum strain growth factor is up to 6.1. Numerical simulation was conducted to analyze the limit of the strain growth induced by the superposition of different vibration modes in the spherical vessel with elastic deformation. The following conclusions were reached: First, the strain growth phenomenon obeys the law of geometric similarity. The strain growth factor is related to the perturbation type, the ratio of the perturbation radius to the spherical shell radius, the ratio of the spherical shell thickness to the spherical shell radius, the first strain peak and so on. The perturbation type and the ratio of the perturbation radius to the spherical shell radius are the main influencing factors. Second, the largest strain growth factor is up to 12 when the perturbation is fully constrained and the perturbation radius is equal to the spherical shell radius.
- strain growth,
- spherical explosion vessel,
- superposition of different vibration modes,
- explosive loading

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References(6)

References

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