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采用统一性能衰退轨迹模型的润滑和密封材料加速寿命预测

吕向飞 陈进

吕向飞,陈进. 采用统一性能衰退轨迹模型的润滑和密封材料加速寿命预测[J]. 机械科学与技术,2023,42(5):802-807 doi: 10.13433/j.cnki.1003-8728.20200628
引用本文: 吕向飞,陈进. 采用统一性能衰退轨迹模型的润滑和密封材料加速寿命预测[J]. 机械科学与技术,2023,42(5):802-807 doi: 10.13433/j.cnki.1003-8728.20200628
LYU Xiangfei, CHEN Jin. Accelerated Life Prediction of Lubricating and Sealing Materials Using Unified Performance Degradation Trajectory Model[J]. Mechanical Science and Technology for Aerospace Engineering, 2023, 42(5): 802-807. doi: 10.13433/j.cnki.1003-8728.20200628
Citation: LYU Xiangfei, CHEN Jin. Accelerated Life Prediction of Lubricating and Sealing Materials Using Unified Performance Degradation Trajectory Model[J]. Mechanical Science and Technology for Aerospace Engineering, 2023, 42(5): 802-807. doi: 10.13433/j.cnki.1003-8728.20200628

采用统一性能衰退轨迹模型的润滑和密封材料加速寿命预测

doi: 10.13433/j.cnki.1003-8728.20200628
基金项目: 重庆市教委科学技术研究项目(KJ1503006)
详细信息
    作者简介:

    吕向飞(1984−),博士,研究方向为智能制造、车辆故障诊断技术,xiangfei113072@163.com

  • 中图分类号: TH117.1

Accelerated Life Prediction of Lubricating and Sealing Materials Using Unified Performance Degradation Trajectory Model

  • 摘要: 润滑和密封材料寿命评估和预测方法是工程研究中亟待突破的瓶颈问题。为了在保证加速寿命评估精度的同时,提高加速寿命评估的效率,在传统的加速寿命评估方法的基础上,提出基于时间尺度优化的加速寿命评估方法。首先,建立含时间尺度的性能衰退轨迹统一模型,以均方误差最小化为优化目标,获取最优时间尺度因子;其次,通过非线性最小二乘法识别出轨迹模型的参数,进而建立起衰退速率的加速模型,对常温下的衰退速率进行外推估计;最后,建立老化时间-温度-性能衰退量的三维模型,通过与实测数据的对比,验证了模型的准确性。
  • 图  1  统一性能衰退轨迹建模方法流程图

    图  2  润滑脂退化轨迹的时间尺度因子与拟合优度

    图  3  润滑脂衰退量实测数据与预测结果对比

    图  4  润滑脂衰退速率随温度的变化

    图  5  润滑脂时间-温度-衰退量的预测效果

    图  6  密封橡胶退化轨迹的时间尺度因子与拟合优度

    图  7  密封橡胶衰退量实测数据与预测结果对比

    图  8  密封橡胶衰退速率随温度的变化

    图  9  密封橡胶时间-温度-衰退量的预测效果

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出版历程
  • 收稿日期:  2021-05-18
  • 刊出日期:  2023-05-25

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