随机振动参数对SOP焊点疲劳寿命的影响  

The Effect of Random Vibration Parameters on the Fatigue Life of SOP Solder Joint

作　　者：刘文杰[1] 金健[1] 张航军[1] 黄思涵 LIU Wenjie;JIN Jian;ZHANG Hangjun;HUANG Sihan(School of Mechanical Science and Engineering,HuaZhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学机械科学与工程学院,湖北武汉430074

出　　处：《电子产品可靠性与环境试验》2019年第1期28-36,共9页Electronic Product Reliability and Environmental Testing

基　　金：高档数控系统关键共性技术创新能力平台项目(二期)(2015ZX04005007);配套国产数控系统的万台数控机床应用工程项目(2014ZX04015061);高档数控装备及工艺在导弹大型整体舱段集成制造中的示范应用项目(2015ZX04002202)资助

摘　　要：为了合理地设计环境应力筛选随机振动剖面,采用有限元方法分析了随机振动中振动量级、振动方向和随机振动频率范围对63Sn37Pb焊点应力分布和功率谱密度响应的影响。并基于Miner线性累积损伤理论和Dirlik模型,分析了不同随机振动剖面与焊点疲劳寿命之间的关系,为建立优化的环境应力筛选随机振动剖面提供了有价值的参考。In order to design the environmental stress screening random vibration profile properly,the finite element method is used to analyze the effect of random vibration level,direction and frequency range on the stress distribution and power spectral density response of63Sn37 Pb solder joint.Based on the Miner linear cumulative damage law and Dirlik model,the relationship between different random vibration profiles and fatigue life of solder joint is analyzed,and valuable references are provided for establishing the optimized environmental stress screening random vibration profile.

关 键 词：有限元分析 随机振动 焊点 疲劳寿命 Dirlik模型 

分 类 号：TB115.1[理学—数学]