高速旋转弹载加速度计失效分析  

Failure analysis of high-speed rotating missile-borne micro-accelerometer

作　　者：马喜宏[1] 王威 秦立君 何程 MA Xihong;WANG Wei;QIN Lijun;HE Cheng(MOE Key Laboratory of Instrumentation Science and Dynamic Measurement,North University of China,Taiyuan 030051,China;School of Instrument and Electronics,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051 [2]中北大学仪器与电子学院,山西太原030051

出　　处：《现代电子技术》2018年第15期114-118,共5页Modern Electronics Technique

基　　金：国家自然科学基金项目(51075374):振动驱动MEMS压电-磁电复合微能源技术研究~~

摘　　要：弹载微加速度计在使用过程中会因旋转弹丸的高速旋转而受到高速旋转环境应力的影响。针对微加速度计在弹载高速旋转环境下的失效分析缺乏理论依据等情况,提出一种通过研究离心力对微加速度计结构影响的方法。利用ANSYS有限元分析软件仿真模拟微加速度计封装结构在高速旋转环境下的受力情况,并进行分析。通过ANSYS有限元分析设计出的微加速度计得到,该微加速度计在弹载高速旋转环境下的失效模式只会发生疲劳失效与磨损失效,并不会引起过度的粘附失效与断裂失效,并且具体的失效影响受到离心应力与结构角度的影响。The missile-borne micro-accelerometer is affected by high-speed rotating environment stress due to the high-speed rotation of rotating projectile in usage process,and the failure analysis of micro-accelerometer under missile-borne high-speed rotating environment lacks of theoretical basis.Therefore,a method is proposed to study the influence of centrifugal force on the structure of micro-accelerometer.The ANSYS finite element analysis software is used to simulate the stress condition of micro-accelerometer package structure in high-speed rotating environment.The fatigue failure and wear failure of the micro-accelerometer designed by ANSYS finite element analysis occur in the missile-borne high-speed rotating environment,and the excessive adhesion failure and fracture failure are excluded.The specific failure is affected by both centrifugal stress and structural angle.

关 键 词：高g值微加速度计 高速旋转弹 有限元分析 结构应力 失效机理 可靠性 

分 类 号：TN98-34[电子电信—信息与通信工程] TP212[自动化与计算机技术—检测技术与自动化装置]