深弹引信错位式隔爆机构设计与仿真研究

Design and Simulation on Dislocated Flame-proof Mechanism of Fuze of Depth Charge Bombs

为了提高引信隔爆机构的安全和可靠性,设计一种新型的泄爆式隔爆机构。应用非线性有限元软件LS-DYNA对隔爆机构的可靠性进行了数值模拟分析,通过试验对比分析数值模拟结果,试验与数值模拟结果基本一致。试验和仿真结果表明,带有导流槽的隔爆机构对水压杆的破坏作用不明显,导爆管没有发生殉爆,能够很好的实现隔爆的目的。采用导流槽式的隔爆机构满足了传爆序列的安全设计要求,并且在实现隔爆目的的条件下铝制水压杆比钢制式的更有着易加工和低成本优势。

In order to improve the safety and reliability of fuze＇s flame-proof mechanism, a novel explosion venting mechanism was de- signed. A nonlinear finite element software ANSYS/LS-DYNA was applied to perform numerical simulation of reliability of the mechanism. The measurement results of experiment essentially agree with the simulations. The results show that after accidental detonator explosion there is no evident damage on the hydraulic lever by using blast deflector and the detonating tube is fully isolated without being affected. This no- vel mechanism can meet the demands of safety design of explosive train. Moreover, under the condition of achieving flame proof, alumin- ium hydraulic lever has the advantages of easy processing and low cost over the steel equivalent.