Experimental Study on Jet Formation and Penetration Characteristics of Square cross-section Shaped Charge
- Resource Type
- article
- Authors
- Wang, Yuting; Huang, Zhengxiang; Zu, Xudong; Ma, Bin; Cai, You-er
- Source
- Latin American Journal of Solids and Structures. January 2021 18(5)
- Subject
- square cross-section
shaped charge
jet formation
penetration
- Language
- English
- ISSN
- 1679-7825
The jet morphology of square and circular cross-section shaped charge with same inscribed circle diameter were observed by conducting an X-ray experiment. Depth-of-penetration tests at standoffs 80 and 160 mm were also carried out. The jet formation was studied by using AUTODYN software. The results showed that the jet of square cross-section shaped charge consists of a condensed part and a non-condensed part. The condensed part has similar characteristics to the corresponding part of circular cross-section shaped charge. And the non-condensed part is distributed at the jet tail. The non-condensed part consists of a main fluid moving along the axis and four off-axis fluids with off-axis velocity along the symmetry plane. The non-condensing of jet reduces the penetration depth of square cross-section shaped charge, the decreasing rate increased from 2.67% to 17.3% when the standoff is increased from 80 mm to 160 mm. When the inscribed circle diameter of the charge cross-section increases to 67.2 mm (1.2 times of 56 mm) and the liner structure remains the same, the square cross-section shaped charge will form a cohesive jet.