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制造误差对盘鼓组合转子模态特性影响分析

邹存建 韩清凯 张昊 卢崇劭 翟敬宇

邹存建, 韩清凯, 张昊, 等. 制造误差对盘鼓组合转子模态特性影响分析[J]. 航空动力学报, 2024, 39(9):20220727 doi: 10.13224/j.cnki.jasp.20220727
引用本文: 邹存建, 韩清凯, 张昊, 等. 制造误差对盘鼓组合转子模态特性影响分析[J]. 航空动力学报, 2024, 39(9):20220727 doi: 10.13224/j.cnki.jasp.20220727
ZOU Cunjian, HAN Qingkai, ZHANG Hao, et al. Analysis of the influence of manufacturing error on the modal characteristics of disc-drum combined rotor[J]. Journal of Aerospace Power, 2024, 39(9):20220727 doi: 10.13224/j.cnki.jasp.20220727
Citation: ZOU Cunjian, HAN Qingkai, ZHANG Hao, et al. Analysis of the influence of manufacturing error on the modal characteristics of disc-drum combined rotor[J]. Journal of Aerospace Power, 2024, 39(9):20220727 doi: 10.13224/j.cnki.jasp.20220727

制造误差对盘鼓组合转子模态特性影响分析

doi: 10.13224/j.cnki.jasp.20220727
基金项目: 中国航空发动机集团产学研合作项目(HFZL2019CXY021-1)
详细信息
    作者简介:

    邹存建(1990-),男,博士生,主要从事转子动力学与振动方面的研究。E-mail:zcj727@mail.dlut.edu.cn

    通讯作者:

    翟敬宇(1984-),男,副教授,博士,主要从事航空发动机结构强度、刚度及振动方面的研究。E-mail:zhaijy@dlut.edu.cn

  • 中图分类号: V232.2

Analysis of the influence of manufacturing error on the modal characteristics of disc-drum combined rotor

  • 摘要:

    为了探究制造误差对转子模态特性的影响规律,基于转子动力学和摄动理论对转子模态局部化、振型阶跃和频率转向特性发生机理进行了阐述;从转子装配工程实际出发,采用自定义函数对典型配合面制造误差形式进行表征,并生成点云数据;采用皮肤模型法将制造误差引入到转子有限元模型中,并针对该模型开展了制造误差对其频率转向、振型阶跃以及模态振型局部化特性分析;采用振型位移局部化因子对制造误差引起的转子振动模态局部化程度进行了量化分析。结果表明:当考虑制造误差且达到一定程度时,会诱发转子失谐,导致转子系统刚度发生变化,加剧频率转向特性;同时通过模态置信准则图分析可知,模态振型发生了错位阶跃和顺序阶跃现象;制造误差导致的失谐效应会使振动能量在转子的部分区域进行聚集,使某些在理想模型下落在频率通带的频率在失谐后落到了频率禁带内,出现了模态振型局部化现象;进一步对其量化分析表明,采用振型位移局部化因子能够有效表征振动模态局部化程度。论文研究方法和结果可为复杂转子装配技术提供参考。

     

  • 图 1  盘鼓组合转子结构

    Figure 1.  Structure of disc-drum combined rotor

    图 2  支撑刚度修正

    Figure 2.  Support stiffness correction

    图 3  单高和双高跳动误差表征

    Figure 3.  Single-high and double-high runout error characterization

    图 4  止口跳动误差表征

    Figure 4.  Runout error characterization of lip

    图 5  引入制造误差的皮肤模型法

    Figure 5.  Skin model method with a manufacturing error

    图 6  不考虑制造误差的盘鼓组合转子有限元模型

    Figure 6.  Finite element model of disc-drum combined rotor without considering manufacturing error

    图 7  引入典型制造误差的配合面网格模型

    Figure 7.  Mesh models of the mating surface with typical manufacturing errors

    图 8  误差模型与理想模型前20阶振型向量夹角变化

    Figure 8.  Variation of the angles between the error models and the first 20 mode vectors of the ideal model

    图 9  盘鼓组合转子前4阶正反进动频率曲线

    Figure 9.  Front and back precession frequency curves for the first four orders of disc-drum combined rotor

    图 10  MAC图

    Figure 10.  MAC diagrams

    图 11  盘鼓组合转子前20阶振型局部化因子

    Figure 11.  Localization factor of the first 20th order vibration mode of disc-drum composite rotor

    表  1  理想模型与制造误差模型前20阶固有频率对比

    Table  1.   Comparison of first twenty order natural frequencies of ideal model and manufacturing error models Hz

    模态阶次理想模型单高误差模型双高误差模型止口正弦误差模型止口偏斜误差模型
    142.1141.9541.9342.0041.98
    242.1341.9741.9542.1242.18
    398.1598.3398.3098.0498.31
    498.1698.3498.3198.1098.40
    5399.18251.39251.52346.94266.77
    6410.88255.18255.85436.50337.41
    7453.21434.43434.97452.95448.15
    8606.46583.52583.46595.29585.86
    9610.13583.70583.95618.38594.38
    10666.36602.28603.52661.49627.53
    11778.16653.44655.55777.21747.37
    12806.83785.52785.47798.58789.83
    13809.49785.72786.13814.05796.85
    14898.89837.31835.52896.68891.36
    15945.56839.17856.42936.92897.83
    16955.75887.40890.94944.47913.14
    171085.50918.24951.781085.601046.50
    181121.301084.201084.201120.001085.80
    191143.501085.201085.801142.601129.40
    201417.101122.601122.701450.301131.30
    注:表中加粗数字表示转子的禁频值。
    下载: 导出CSV

    表  2  转子1阶、6阶和20阶振型云图对比

    Table  2.   Comparison of 1st、6th and 20th order vibration mode nephograms of the rotor

    模型 1阶 6阶 20阶
    理想模型
    单高误差
    模型
    双高误差
    模型
    止口正弦
    误差模型
    止口偏斜
    误差模型
    下载: 导出CSV
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  • 收稿日期:  2022-09-26
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