摘要
空间站电源产品为适应产品小型化发展趋势,多引脚器件被广泛使用。为保证电源产品在力学环境下的高可靠性需求,针对多引脚器件的引脚疲劳断裂问题,提出疲劳寿命分析方法。在Miner累计损伤理论的基础上,建立了根据仿真数据判定器件疲劳寿命的策略,并对主要的影响因素进行优化改进,合理控制器件在设计周期内力学试验中的疲劳寿命损耗,经过计算分析表明,通过该方法得到的器件疲劳寿命,可确保空间站电源产品使用的多引脚器件可以长期稳定使用。
In order to meet the trend of miniaturization in space station power supply products,multi-pin devices are used in many places.In order to ensure the high reliability of power supply products under mechanical environment,a fatigue life analysis method is proposed for the pin fatigue fracture problem of multi-pin devices.Based on the Miner cumulative damage theory,a strategy to determine the fatigue life of devices based on simulation data is established,and the main influencing factors are optimized and improved,and by reasonably controlling the fatigue life loss of devices in mechanical tests during the design cycle,the calculation and analysis show that the fatigue life of devices obtained by this method can ensure that multi-pin devices used in space station power supply products can still be used stably for a long time after experiencing the mechanical environment.The calculation analysis shows that the fatigue life of the device obtained by this method can ensure that the multi-pin devices used in space station power supply products can still be used stably for a long time after experiencing mechanical environment.
作者
金磊
郑江涛
屈诚志
王诚
陈天石
黄忞
JIN Lei;ZHENG Jiangtao;QU Chengzhi;WANG Cheng;CHEN Tianshi;HUANG Min(Shanghai Institute of Space Power-Sources,Shanghai 200245,China)
出处
《上海航天（中英文）》
CSCD
2022年第S02期183-189,共7页
Aerospace Shanghai（Chinese&English）
关键词
疲劳寿命
拉应力
剪切力
相对位移
动态应力
fatigue life
tensile stresses
shear stress
relative displacement
dynamic stresses
