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柔性双层隔振系统振动能量解耦方法及应用

宋世哲 董大伟 黄燕 徐昉晖 张伟 闫兵

宋世哲, 董大伟, 黄燕, 徐昉晖, 张伟, 闫兵. 柔性双层隔振系统振动能量解耦方法及应用[J]. 西南交通大学学报, 2023, 58(2): 304-313. doi: 10.3969/j.issn.0258-2724.20210993
引用本文: 宋世哲, 董大伟, 黄燕, 徐昉晖, 张伟, 闫兵. 柔性双层隔振系统振动能量解耦方法及应用[J]. 西南交通大学学报, 2023, 58(2): 304-313. doi: 10.3969/j.issn.0258-2724.20210993
SONG Shizhe, DONG Dawei, HUANG Yan, XU Fanghui, ZHANG Wei, YAN Bing. Vibration Energy Decoupling Method and Application for Flexible Double-Layer Vibration Isolation Systems[J]. Journal of Southwest Jiaotong University, 2023, 58(2): 304-313. doi: 10.3969/j.issn.0258-2724.20210993
Citation: SONG Shizhe, DONG Dawei, HUANG Yan, XU Fanghui, ZHANG Wei, YAN Bing. Vibration Energy Decoupling Method and Application for Flexible Double-Layer Vibration Isolation Systems[J]. Journal of Southwest Jiaotong University, 2023, 58(2): 304-313. doi: 10.3969/j.issn.0258-2724.20210993

柔性双层隔振系统振动能量解耦方法及应用

doi: 10.3969/j.issn.0258-2724.20210993
基金项目: 国家自然科学基金(51875482)
详细信息
    作者简介:

    宋世哲(1993—),男,博士研究生,研究方向为车辆系统振动控制,E-mail:songshizhe@my.swjtu.edu.cn

    通讯作者:

    黄 燕(1987—),女,讲师,研究方向为振动噪声及其控制,E-mail:huangyan8791@swjtu.edu.cn

  • 中图分类号: TB533.2;O326

Vibration Energy Decoupling Method and Application for Flexible Double-Layer Vibration Isolation Systems

  • 摘要:

    为解决难以利用能量解耦法设计柔性双层隔振系统的问题,提出一种能够表示柔性设备和中间质量弹性模态特点的多自由度模型;基于该模型,提出采用广义弹性力对柔性隔振系统进行解耦的方法,并推广到柔性结构中;以某内燃动车动力总成双层隔振系统为例,基于所提方法探讨了构架弹性模态下刚体振动与弹性振动的耦合情况;最后通过振动实验台验证了该方法的有效性. 研究结果表明:机组一级隔振系统垂向频率从12 Hz降低到8 Hz后,系统所有模态频率均得到不同幅度的下降,前两阶刚体振动模态频率下降最明显,分别下降50.00%和49.98%;构架弹性模态频率比机组弹性模态频率更低,影响更大,构架弹性模态频率下降8.32%,机组弹性模态频率下降0.80%;在构架弹性振动模态振动中,构架弹性振动能量所占比例提高14.88%,刚体振动能量所占比例降低90.64%,降低一级隔振系统垂向频率能够提高振动解耦效果,减少振动传递.

     

  • 图 1  双层隔振系统多自由度模型

    Figure 1.  Multi-degree-of-freedom model of double-layer vibration isolation system

    图 2  内燃动力总成双层隔振系统结构

    Figure 2.  Physical diagram of the double-layer isolation system for powertrain of DMU

    图 3  双层隔振系统4自由度扭转振动动力学模型

    Figure 3.  4-degree-of-freedom torsional vibration dynamic model of double-layer vibration isolation system

    图 4  扭转振动各阶振型

    Figure 4.  Diagram torsional vibration modes of each order

    图 5  弹性模态频率变化

    Figure 5.  Elastic mode frequency variation

    图 6  构架弹性模态的振动能量百分比分布

    Figure 6.  Percentage distribution of vibration energy for the elastic mode of the intermediate frame

    图 7  不同机组垂向频率下的系统振动响应

    Figure 7.  Vibration response of the system with various vertical frequencies of powertrain

    图 8  测试现场

    Figure 8.  Test site

    表  1  机组垂向频率变化对系统频率和解耦情况的影响

    Table  1.   Effect of vertical vibration frequencies of powertrain change on frequencies and decoupling of the system

    fg/Hz模态频率/
    Hz
    振动能量百分比/%
    刚体
    振动
    构架弹
    性振动
    机组弹
    性振动
    8低阶刚体11.54100.0000
    高阶刚体29.33100.0000
    构架弹性78.1113.8986.060.04
    机组弹性107.821.250.0198.74
    10低阶刚体14.43100.0000
    高阶刚体36.6699.990.010
    构架弹性81.1023.2976.540.17
    机组弹性108.202.400.0597.56
    12低阶刚体17.31100.0000
    高阶刚体43.9999.990.010
    构架弹性84.6126.4873.250.26
    机组弹性108.682.880.0797.05
    下载: 导出CSV

    表  2  双层隔振系统振动烈度测试结果

    Table  2.   Test results for vibration intensity of double-layer isolation system

    工况/
    (r·min−1
    功率/
    kW
    机组构架
    振动烈度/
    (mm·s−1
    评定等级振动烈度/
    (mm·s−1
    评定等级
    900 37 6.35 A 3.93 A
    1000 53 5.59 A 3.45 A
    1100 70 7.02 A 3.90 A
    1200 91 8.74 B 4.13 A
    1400 144 9.07 B 4.46 A
    1650 237 13.91 B 8.28 B
    1800 307 15.45 B 8.54 B
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-11-30
  • 修回日期:  2022-03-10
  • 网络出版日期:  2022-12-10
  • 刊出日期:  2022-03-17

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