Study on explosive separation of titanium alloy plate with double hole charge structure
In order to explore the optimal charge diameter for explosive separation of titanium alloy plates under the double hole charge structure,numerical simulation combined with specific experiments was used to compare and analyze the separation situation of titanium alloy plates with different pore sizes.The fracture separation process of titanium alloy plates with double opening structures was analyzed by observing the point dispersion velocity and combining it with strength criteria to determine the fracture situation.The results indicate that for TC4 titanium alloy plates with a thickness of 23 mm,the size of the charge hole diameter directly affects the effectiveness of explosive separation.When the diameter of a single charge hole is not less than 4.75 mm,the titanium alloy plate can be completely separated.As the diameter of the charging hole increases,the damage to the titanium alloy plate becomes more severe,and the additional kinetic energy also increases.Compared to single hole charge structures with the same remaining thickness,double hole charge structures can reduce the charge by half and more effectively utilize the explosive energy of explosives,achieving the goal of separating titanium alloy plates,when using continuous coupling charge methods.Within a certain range,new technological solutions can be provided for the interstage separation of spacecraft.
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