李晨现, 高芳清, 舒文皓, 邓鹤轩. QFP焊点形态模拟及随机振动疲劳寿命预测[J]. 机械研究与应用, 2023, 36(5): 41-44. DOI: 10.16576/j.ISSN.1007-4414.2023.05.011
引用本文: 李晨现, 高芳清, 舒文皓, 邓鹤轩. QFP焊点形态模拟及随机振动疲劳寿命预测[J]. 机械研究与应用, 2023, 36(5): 41-44. DOI: 10.16576/j.ISSN.1007-4414.2023.05.011
LI Chen-xian, GAO Fang-qing, SHU Wen-hao, DENG He-xuan. Simulation of QFP Solder Joint Geometry and Random Vibration Fatigue Life Prediction[J]. Mechanical Research & Application, 2023, 36(5): 41-44. DOI: 10.16576/j.ISSN.1007-4414.2023.05.011
Citation: LI Chen-xian, GAO Fang-qing, SHU Wen-hao, DENG He-xuan. Simulation of QFP Solder Joint Geometry and Random Vibration Fatigue Life Prediction[J]. Mechanical Research & Application, 2023, 36(5): 41-44. DOI: 10.16576/j.ISSN.1007-4414.2023.05.011

QFP焊点形态模拟及随机振动疲劳寿命预测

Simulation of QFP Solder Joint Geometry and Random Vibration Fatigue Life Prediction

  • 摘要: 针对电子设备中翼型焊点的振动可靠性问题, 介绍了电子设备元器件焊点在随机振动载荷下的仿真分析的通用方法。通过Surface Evolver软件得到了某机载电子设备元器件焊点的形态预测模型, 然后结合Hypermesh将模型导入到ABAQUS有限元软件中完成有限元模型搭建; 在有限元软件中, 对模型加载随机振动载荷, 采用Steinberg模型, 结合Manson高周疲劳经验公式及Palmgren-Miner线性疲劳损伤累计准则; 得到了焊点随机振动载荷下的可靠性寿命, 研究成果对电子设备元器件焊点的失效分析具有实用价值。

     

    Abstract: Aiming at the vibration reliability problem of airfoil solder joints in electronic equipment, the general method of simulation analysis for the solder joints of electronic equipment components under random vibration load is introduced. The Surface Evolver software is used to obtain the shape prediction model of solder joints of an airborne electronic device. The finite element model is built by importing Hypermesh into ABAQUS finite element software. Random vibration loads are added to the model in finite element software, and then the Steinberg model is adopted to obtain the reliability life of solder joints under the random vibration loads by combining the Manson's high cycle fatigue empirical formula with the Palmgren-Miner's linear fatigue damage accumulation criterion. The research results have practical value for failure analysis of solder joints of electronic equipment components.

     

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