Impact Deformation Model of Thin-Walled Shell Filled with Explosive under High Axial Shock Overload

Abstract:

The thin-walled shell axial impact deformation of one-leg electric detonator with different density charge was studied. The impact stress was analyzed, and on the basis of kinetic theory the impact deformation model was established for the thin-walled shell filled with explosive. The experiments were verified at 60 000g, 80 000g, 100 000g and 120 000g by gas gun. The results show that shell length decreases and the plastic deformation zone diameter increases after impact. Damage deformation degree decreases with increased shell strength, reduced shell and internal charging mass summation and reduced impact velocity square. The model calculated value agrees well with the test data. The deformation model can be used to predict overload damage deformation for such detonator.

• Periodical: Applied Mechanics and Materials (Volume 455)
• Pages: 279-285
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.455.279
• Online since: November 2013
• Authors: Xiao Xia Sun*, Wei Liu, Rui Qi Shen, Ying Hua Ye, Li Zhi Wu
• Keywords: Damage Model, Detonator, Gas Gun, High Overload, Thin-Walled Shell

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