Research on the responsive characteristics of isolation mechanisms in MEMS safety systems

In response to issues such as the unclear characteristics of isolation mechanisms, explosion-proof ability, high dynamic environmental response characteristics in MEMS safety systems, and insufficient design verification basis, the basic theory of the motion process of the explosion-proof mechanism was analyzed starting from the working principle of the explosion-proof mechanism. The explosion-proof performance and response characteristics of the explosion-proof mechanism under different preset conditions were studied through simulation calculation and experimental verification. The results show that when the thickness of the nickel material partition is less than 0.3 mm, it can block the high-speed impact of titanium flying plates with a design size of Φ 0.75 mm ×0.025 mm and the speed not exceeding 2,800 m/s; when the projectile speed is not less than 20,000 r/min, the isolation mechanism can move in place normally and lock successfully, while also having the ability to resist high overload impact. Under the action of not more than 50,000 g rear seat overload, the structure of the explosion-proof mechanism is intact without any failure.