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

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

吕向飞^{1, 2,},
陈进²

1.
重庆大学机械传动国家重点实验室，重庆　400044
2.
重庆电子工程职业学院智能制造与汽车学院，重庆　401331

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
计量
- 文章访问数: 111
- HTML全文浏览量: 73
- PDF下载量: 12
- 被引次数: 0
出版历程
- 收稿日期: 2021-05-18
- 刊出日期: 2023-05-25

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

LYU Xiangfei^{1, 2
,},
CHEN Jin²

1.
State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China
2.
Intelligent Manufacturing and Automobile School, Chongqing College of Electronic Engineering, Chongqing 401331, China

摘要

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。
- 润滑 /
- 密封 /
- 加速试验 /
- 寿命评估 /
- 时间尺度优化
Abstract: Life evaluation and prediction methods for lubrication and sealing materials is a bottleneck that needs to be broken. In order to improve the efficiency of accelerated life assessment while ensuring the accuracy of accelerated life assessment, on the basis of traditional accelerated life assessment methods, an accelerated life assessment method based on time scale optimization is proposed. Firstly, a unified model for performance decay trajectory with time scaleis established, and the mean square error minimization as the optimization goal to obtain the optimal time scale coefficientis taken consideration. Secondly, the parameters of the trajectory model through the nonlinear least squares method isidentified, and then the decay rateis established. The acceleration model is used to extrapolate the decay rate at room temperature from accelerated high temperatures. Finally, a three-dimensional model for aging time-temperature-performance decay is established, with which the accuracy of the model is verified by comparing the measured data.
- lubrication /
- sealing /
- accelerated test /
- life evaluation /
- time scale optimization

HTML全文

图 1 统一性能衰退轨迹建模方法流程图

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图 2 润滑脂退化轨迹的时间尺度因子与拟合优度

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图 3 润滑脂衰退量实测数据与预测结果对比

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图 4 润滑脂衰退速率随温度的变化

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图 5 润滑脂时间-温度-衰退量的预测效果

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图 6 密封橡胶退化轨迹的时间尺度因子与拟合优度

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图 7 密封橡胶衰退量实测数据与预测结果对比

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图 8 密封橡胶衰退速率随温度的变化

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图 9 密封橡胶时间-温度-衰退量的预测效果

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