基于仿真的多应力加速寿命试验优化设计  

Optimal Design of Multi-stress Accelerated Life Test Based on Simulation

作　　者：韩慧超 栾家辉[1] 代永德 石士进[1] 朱兴高[1] Han Huichao;Luan Jiahui;Dai Yongde;Shi Shijin;Zhu Xinggao(China Astronautics Standards Institute,Beijing 100071)

机构地区：[1]中国航天标准化与产品保证研究院,北京100071

出　　处：《航天制造技术》2020年第2期37-40,共4页Aerospace Manufacturing Technology

摘　　要：提出一种基于Monte-Carlo仿真的多应力加速寿命试验优化设计方法。选取某型航天用电容器作为研究对象,研究分析复杂环境应力下的故障模式和主要失效机理,确定其寿命分布和加速模型。基于预估加速模型关键参数,在试验约束条件下利用Monte-Carlo仿真方法优化设计试验方案,确定合理的样本分组和试验截尾时间,达到优化试验方案的目的。对于航天电子产品具有普遍适用性,对其他电子、机械类产品也存在一定意义。This paper presents an optimized design method for multi-stress accelerated life test based on Monte-Carlo simulation.A certain type of aerospace capacitor is selected as the research object,and the failure modes and main failure mechanisms under complex environmental stresses are studied and analyzed,and its life distribution and acceleration model are determined.Based on the key parameters of the estimated acceleration model,the Monte-Carlo simulation method was used to optimize the test plan under test constraints.The reasonable sample grouping and test cut-off time were determined to achieve the purpose of optimizing the test plan.This method has universal applicability to aerospace electronic products,and also has certain significance to other electronic and mechanical products.

关 键 词：蒙特卡罗仿真 多应力 试验优化 

分 类 号：V216[航空宇航科学与技术—航空宇航推进理论与工程]