摘要
针对试验中引信微机电安全系统承受后坐/离心过载时,后坐/离心滑块卡头在进入基板卡座时出现较大变形导致滑块不能被基板卡座顺利闭锁的情况,提出了弹性支撑结构的MEMS滑块闭锁机构。该结构与原结构相反,卡头上是硬倒刺,弹性支撑臂做在基板上。ANSYS有限元仿真表明,基于弹性支撑结构的闭锁机构卡头和卡臂在承受过载时闭锁机构危险截面处的应力比原有机构降低了52%,避免了塑性变形,滑块能够顺利进入卡座并被闭锁。
When a fuze MEMS （micro electro mechanical system）safety system bears setback/centrifugal over-load in an experiment,the clamp of a setback/centrifugal slide block deforms considerably when entering the clamping seat of a base plate,so that the slide block cannot be locked successfully by the clamping seat of the base plate.Aiming at the problem,this paper presented an MEMS slide block locking mechanism on the basis of a flexible supporting structure.The structure of the mechanism was contrary to the original structure,that rigid barbs were arranged on the clamp,and a flexible supporting arm was arranged on the base plate.ANSYS finite element simulation showed that when the clamp and the clamping arm of the locking mechanism on the basis of the flexible supporting structure beared overload,the stress of the dangerous cross-section of the locking mechanism was reduced by 5 2%,compared with that of the original mechanism,so that plastic deformation was avoided,and the slide block can enter the clamping seat smoothly and locked.
出处
《探测与控制学报》
CSCD
北大核心
2014年第1期37-41,共5页
Journal of Detection & Control
关键词
引信
微机电系统
闭锁机构
fuze
MEMS （micro electro mechanical system）
locking mechanism
