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导弹整机贮存寿命加速试验建模与评估技术

张生鹏, 唐宇彬, 张安琪, 马小兵, 李宏民

张生鹏, 唐宇彬, 张安琪, 等. 导弹整机贮存寿命加速试验建模与评估技术[J]. 航天器环境工程, 2024, 41(6): 742-750 DOI: 10.12126/see.2024055
引用本文: 张生鹏, 唐宇彬, 张安琪, 等. 导弹整机贮存寿命加速试验建模与评估技术[J]. 航天器环境工程, 2024, 41(6): 742-750 DOI: 10.12126/see.2024055
ZHANG S P, TANG Y B, ZHANG A Q, et al. Modeling and evaluation for accelerated storage life test of assembly missile equipment[J]. Spacecraft Environment Engineering, 2024, 41(6): 742-750. DOI: 10.12126/see.2024055
Citation: ZHANG S P, TANG Y B, ZHANG A Q, et al. Modeling and evaluation for accelerated storage life test of assembly missile equipment[J]. Spacecraft Environment Engineering, 2024, 41(6): 742-750. DOI: 10.12126/see.2024055

导弹整机贮存寿命加速试验建模与评估技术

基金项目: 装备预先研究共用技术项目(编号:50904060202)
详细信息
    作者简介:

    张生鹏,研究员,主要从事环境与可靠性试验、加速寿命试验技术研究

  • 中图分类号: TB114.3; V416.6

Modeling and evaluation for accelerated storage life test of assembly missile equipment

  • 摘要:

    针对多失效模式、多失效机理、小子样导弹整机产品贮存寿命加速试验与评估面临的难题,提出整机贮存寿命加速试验建模方法,通过建立基于竞争失效的整机贮存寿命模型,综合考虑零部组件产品的贮存寿命信息,开展整机加速因子综合计算;提出基于试验长度因子的小子样整机贮存可靠度评估方法,通过加长试验时间达到利用小子样验证高贮存可靠度的目的。最后给出典型伺服机构加速试验案例分析,证明方法的有效性。该方法可为开展小子样整机产品贮存寿命加速试验与寿命评估提供一种新的技术途径。

    Abstract:

    This paper addresses the challenges associated with conducting accelerated storage life tests and evaluations for assembly missile equipment that exhibits multiple failure modes and mechanisms, particularly under the constraint of small missile sample size. A novel method for modeling the accelerated storage life test of such equipment was proposed. The method involved establishing a storage life model based on competitive failures and incorporated the storage life information of individual components. An integrated approach for dermining the acceleration factor of assembly missile equipment was developed. Furthermore, a method for evaluating the storage reliability of assembly missile equipment with small sample sizes was introduced, utilizing a test length factor to validate high storage reliability by prolonging the test duration. The effectiveness of the proposed method was demonstrated through a case study of a servo mechanism acceleration test. This research offers an innovotive technical approach for carrying out accelerated storage life tests and evaluations on assembly missile equipment when sample sizes are limited.

  • 图  1   整机贮存失效分析

    Figure  1.   Failure analysis for storage of assembly equipment

    图  2   整机加速贮存试验模型建立

    Figure  2.   Modeling for accelerated storage test of assembly equipment

    图  3   典型导弹贮存剖面

    Figure  3.   Typical storage profile of a missile

    图  4   伺服机构组成及工作原理

    Figure  4.   Composition and working principle of the servo mechanism

    图  5   伺服机构整机贮存可靠度曲线

    Figure  5.   Reliability curve for the storage of servo mechanism

    图  6   某型伺服机构基准贮存环境剖面(1年)

    Figure  6.   Reference storage environment profile of a servo mechanism (one year)

    图  7   伺服机构加速验证试验剖面(等效贮存1年)

    Figure  7.   Acceleration verification test profile of the servo mechanism (equivalent storage for one year)

    表  1   伺服机构典型贮存失效模式及机理

    Table  1   Typical storage failure modes and mechanisms of the servo mechanism

    部组件 失效模式 失效机理
    电动机 输出力过小 绝缘老化,内电阻压降增大
    橡胶
    密封圈
    油液泄漏  密封圈老化,同时周期性温度循环应力作用下材料变形,导致密封失效
    伺服阀 参数零偏过大  长期应力作用导致弹簧老化蠕变,材料应力释放等
    线性位移
    传感器
    参数漂移导致
    线性度超差
    导电基体树脂材料老化变形
    下载: 导出CSV

    表  2   某型伺服机构贮存薄弱部组件贮存寿命试验数据

    Table  2   Life test data of weak-storage components in a servo mechanism during storage

    部组件 数量 寿命分布 分布参数 激活能/eV
    电动机(含电连接器) 1 威布尔分布 η=49.0 a;m=3.8 0.53
    密封件 增压活塞 1 威布尔分布 η=21.3 a,m=4.0 0.61
    往复阀 2
    油缸 1
    油箱盖部件 1
    油滤盖板部件 1
    导向密封部件 1
    管接头部件 2
    堵头 14
    伺服阀 1 威布尔分布 η=58.0 a;m=4.2 0.47
    线性位移传感器 1 威布尔分布 η=95.6 a;m=3.3 0.92
    下载: 导出CSV

    表  3   伺服机构寿命分布参数

    Table  3   Life distribution parameters of the servo mechanism

    温度应力/℃形状参数特征寿命/a相关系数加速因子
    213.749.750.996
    653.740.420.99823.5
    下载: 导出CSV

    表  4   伺服机构加速试验剖面参数

    Table  4   Parameters of the servo mechanism acceleration test profile

    贮存阶段 基准贮存环境剖面 加速验证试验剖面
    敏感应力 持续时间 模拟条件 加速条件 加速因子 加速时间
    库房贮存 温度 4380 h 21 ℃ 65 ℃ 23.5 186 h
    战备值班 温度 4380 h 21℃ 65 ℃ 23.5 186 h
    温度循环 183个循环 温差15 ℃ -20~65 ℃ 11.3 16个循环
    定期检测 电应力 2次/年 1 2次
    下载: 导出CSV
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出版历程
  • 收稿日期:  2024-05-07
  • 修回日期:  2024-12-06
  • 网络出版日期:  2024-12-24
  • 刊出日期:  2024-12-25

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