航天器电子元器件疲劳寿命分析  

Fatigue life-span analysis on spacecraft electronic components

作　　者：代锋[1] 唐德效[1] 付永辉[1] 邵兆申[1] 

机构地区：[1]中国空间技术研究院西安分院结构技术研究室,西安710000

出　　处：《计算机辅助工程》2010年第2期56-59,共4页Computer Aided Engineering

摘　　要：为研究空间环境效应对航天器电子设备元器件疲劳寿命的影响,应用Miner累积损伤理论及三带宽技术,根据表贴元器件经历的试验、发射和在轨运行等实际环境进行振动及热疲劳寿命分析.给出振动及热循环疲劳寿命的计算方法,并以某BGA(Ball Grid Array)器件为例进行分析.该方法可为长寿命、高可靠的航天器电子设备抗力学及热设计提供分析途径.To study the effect of space environment on the fatigue life of spacecraft electronic components, the Miner cumulative damage theory and the three-band technology are used to analyze the vibration and thermal fatigue life-span according to the experienced environment such as test, launch, motion on orbit and so on. A calculation method on the analysis of vibration and thermal fatigue life is proposed and a BGA （Ball Grid Array） component is taken as an example to perform the analysis. The method is an analysis way for the anti-mechanics and thermal design on long life space electronic equipment with high reliability.

关 键 词：航天器电子元器件 振动 热循环 Miner累积损伤理论 三带宽技术 疲劳寿命因子 

分 类 号：V443[航空宇航科学与技术—飞行器设计]