High Impact Dynamic Simulation of Planar S-Form Micro-Spring

Abstract

This paper describes the research status of MEMS spring used in fuze. For the Nickel planar S-form micro-spring, according to its application environment and design requirements, the length of the straight beam was taken as the only variable to study the variation of the micro-spring dynamic stiffness under high impact load. These researches can provide some reference views to design applications and reliability analysis of micro-spring used in the munitions, and also can lay the foundation for the response characteristics of the micro-scale elastic components under impact load.

Design, test and analysis of a threshold-value judging mechanism in silicon-based MEMS safety and arming device

“…The traditional safety and arming (S&A) device is a key component of fuze to achieve S&A functions, but it is not available for modern weaponry because of its large size, low accuracy and poor anti-overload capability, Based on the above problems, many research institutes have launched the design of S&A devices, For example, the design of the threshold determination mech anism for S&A device by nickel [1][2][3]. Dynamic simulation analysis [4][5] and system reliability were settled by means of finite element analysis [6].…”

Design and Analysis of the Elastic-Beam Delaying Mechanism in a Micro-Electro-Mechanical Systems Device

“…The MEMS S&A system is composed of threshold-value judging mechanism, lock-releasing mechanism, elastic-beam delaying mechanism, centrifugal lock, setback lock, sub-centrifugal slider, and main centrifugal slider. It has two functions [18,19,20,21,22,23,24,25,26,27,28]: one function is that after the ammunition goes out of the antiaircraft gun, it needs a certain time delay to ensure that the main centrifugal slider does not move to the designated position, so as to ensure that the ammunition does not explode at the muzzle or launch area, which can guarantee the safety of the ammunition. The other function is that when ammunition arrives at the designated area, it needs the main centrifugal slider to move to the designated position to ensure the reliable function of ammunition.…”

Design of High-Reliability Micro Safety and Arming Devices for a Small Caliber Projectile

“…Fuse is an important part of the ammunition to achieve precision aim and efficient damaging ability [ 1 , 2 , 3 ]. Once certain conditions such as rotary speed have been reached, the safety and arming (S & A) device must arm reliably and the fuse enters the state of readiness [ 4 , 5 , 6 ]. Traditional S & A devices can accomplish the safety and arming functions of a fuse, however, this is not available for modern weapon because of its large size, low accuracy, and poor anti-overload capability [ 7 , 8 , 9 , 10 ].…”