基于Adams的低过载激活机构运动学建模仿真分析

Kinematic Modeling and Simulation Analysis of Low-Overload Activation Mechanism Based on ADAMS

摘要: 针对某型火箭弹化学电源激活机构存在低过载发射工况可靠激活、高过载跌落勤务安全二者难以兼顾，以及膛内早炸危及阵地人员安全的问题，本文针对该型火箭弹的化学电源，设计了一种小型低过载激活机构。该机构针对其约50 g长脉宽低后坐与低离心转速的发射环境，构建蛇形槽–内惯性件–离心球三级顺序保险机构，通过后坐环境与旋转环境的序列耦合，实现低过载可靠激活、短脉冲跌落不解保的同时，有效减少了机构的轴向空间占用，确保了激活装置的安全性和小型化。仿真表明，该机构能够兼顾低过载发射可靠激活与高过载跌落勤务安全，并可避免膛内早炸引发的阵地安全隐患。

Abstract: To address the failure of conventional activation mechanisms for rocket projectile chemical power sources to reconcile reliable activation under low-overload launch conditions with service safety under high-overload drop, as well as the risk of in-bore premature detonation endangering personnel safety at the launch site, a compact low-overload activation mechanism is proposed. Tailored to a launch environment characterized by approximately 50 g long-pulse low setback and low centrifugal rotation speed, the mechanism employs a three-stage sequential safety architecture comprising a serpentine slot, an internal inertial component, and a centrifugal ball. Through the sequential coupling of setback and rotational stimuli, it achieves reliable low-overload activation while remaining unarmed under short-pulse drop, effectively reducing axial space occupation and ensuring both safety and miniaturization. Simulation results demonstrate that the mechanism reconciles reliable low-overload launch activation with high-overload drop service safety and mitigates position safety hazards arising from in-bore premature detonation.