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本文以冲击响应理论作为计算引信膛内点火机构平时安全性和可靠发火性的基础,分别对运动零件击针和火帽的二种情况,提出了膛内点火机构优化设计的数学模型。目标函数中综合了平时安全性与发火可靠性二个方面;约束条件中充分考虑了结构参数的公差散布对机构性能的影响。作为这一数学模型的实际应用,对一种低速弹引信膛内点火机构的具体改进进行了优化设计计算。计算结果进一步说明了适当增大弹簧抗力可以提高低速弹引信膛内点火机构的戳击能量。根据计算结果,在分析了工艺性的基础上,提出了该引信膛内点火机构的改进方案。
In this paper, the impulse response theory is used as the basis to calculate the usual safety and reliable ignitability of the ignition mechanism in the fusebox. The mathematical model of the optimal design of the ignition mechanism in the bore is put forward for the two cases of the firing pin and the cap of the moving parts respectively. The objective function integrates two aspects of usual safety and ignition reliability; the constraint conditions fully take into account the influence of the dispersion of structural parameters on the performance of the mechanism. As a practical application of this mathematical model, the optimization of the ignition mechanism in a low-speed missile's pilot chamber was optimized. The calculation results further illustrate that increasing the spring resistance appropriately can increase the impact energy of the ignition mechanism in the low-speed missile fusebox. Based on the calculation results, based on the analysis of the processability, an improved scheme of the ignition mechanism in the fuze chamber is proposed.