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刚性接触网-受电弓系统快速仿真方法

陈龙 刘志刚 段甫川 胡泽尧 徐钊 陈可

陈龙, 刘志刚, 段甫川, 胡泽尧, 徐钊, 陈可. 刚性接触网-受电弓系统快速仿真方法[J]. 西南交通大学学报. doi: 10.3969/j.issn.0258-2724.20230206
引用本文: 陈龙, 刘志刚, 段甫川, 胡泽尧, 徐钊, 陈可. 刚性接触网-受电弓系统快速仿真方法[J]. 西南交通大学学报. doi: 10.3969/j.issn.0258-2724.20230206
CHEN Long, LIU Zhigang, DUAN Fuchuan, HU Zeyao, XU Zhao, CHEN Ke. Fast Simulation Method for Rigid Pantograph and Overhead Conductor Rail System[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20230206
Citation: CHEN Long, LIU Zhigang, DUAN Fuchuan, HU Zeyao, XU Zhao, CHEN Ke. Fast Simulation Method for Rigid Pantograph and Overhead Conductor Rail System[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20230206

刚性接触网-受电弓系统快速仿真方法

doi: 10.3969/j.issn.0258-2724.20230206
基金项目: 国家自然科学基金项目(52172408,52102478)
详细信息
    作者简介:

    陈龙(1995—),男,博士研究生,研究方向为刚性接触网-受电弓系统动力学,E-mail:longchen@my.swjtu.edu.cn

    通讯作者:

    刘志刚(1975—),男,教授,博士,研究方向为高速铁路弓网动力学、状态检测与评估,E-mail:liuzg_cd@126.com

  • 中图分类号: U225.1

Fast Simulation Method for Rigid Pantograph and Overhead Conductor Rail System

  • 摘要:

    针对当前刚性接触网-受电弓系统有限元模型仿真速度慢、计算时间成本高的问题,本文对采用三维接触算法的弓网仿真方法与流程进行改进. 首先,采用中心差分思想,将求解弓网接触副相对运动速度时需迭代计算的方程转换为可直接计算的显式方程;然后,将刚性接触网在静平衡处进行线性化处理,以避免刚度矩阵组装耗时,并加快刚性网内力计算;其次,对弓网接触状态进行惰性判断以减少计算量;最后,对本文所提快速仿真方法在不同情况下的计算效率与精度进行分析. 研究结果表明:在30跨8 m跨距的刚性接触网-受电弓仿真算例中,快速仿真方法相比标准仿真方法节省97.67%的仿真时间,且接触力结果最大偏差仅为0.48%;随着模型规模的增大,其节省的时间迅速增加,计算效率优势愈发显著,同时接触力结果偏差均小于1.0%;且随着运行速度的提高,所节省的时间占比基本不变,接触力结果偏差略有增大趋势,在230 km/h以下的速度工况中,接触力标准差偏差均小于1.0%.

     

  • 图 1  全局三维接触示意

    Figure 1.  Global three-dimensional contact

    图 2  刚性接触网-受电弓系统整体仿真流程

    Figure 2.  Simulation flowchart of rigid pantograph and OCR system

    图 3  替换后总接触力结果对比

    Figure 3.  Comparison between total contact forces after replacing

    图 4  替换后仿真方法各环节耗时占比

    Figure 4.  Time proportion of each procedure in simulation method after replacing

    图 5  跨中点振动轨迹图

    Figure 5.  Vibration trajectory of mid-span point

    图 6  刚性接触网-受电弓系统快速仿真流程

    Figure 6.  Fast simulation flowchart of rigid pantograph and OCR system

    图 7  快速仿真方法与标准方法结果对比

    Figure 7.  Comparison of results from fast simulation method and standard method

    图 8  快速仿真方法环节耗时占比

    Figure 8.  Time proportion of each procedure in fast simulation method

    图 9  不同规模模型中快速仿真方法节省时间对比

    Figure 9.  Time saved for models in different scales by fast simulation method

    图 10  不同规模模型中结果偏差对比

    Figure 10.  Result error comparison of models in different scales

    图 11  不同速度下快速仿真方法节省时间对比

    Figure 11.  Time saved for models at different speeds by fast simulation method

    图 12  不同速度下快速仿真方法结果偏差对比

    Figure 12.  Result error comparison for models at different speeds by fast simulation method

    表  1  受电弓参数

    Table  1.   Parameters of pantograph

    参数 质量/kg 刚度/(N·m−1 阻尼/(N·s·m−1
    自由度1 7.12 9430.00 20
    自由度2 6.00 14100.00 20
    自由度3 5.80 0.01 70
    下载: 导出CSV

    表  2  各改进措施效果

    Table  2.   Effect of different improvement measures

    改进方法 总接触力 仿真时间
    最大相对偏差/% 平均相对偏差/% 标准差相对偏差/% 耗时/s 节省时间比/%
    标准方法 2092.89
    1 3.50 × 10−4 4.80 × 10−5 5.90 × 10−5 960.13 54.12
    1 + 2 0.48 0.10 0.06 496.64 76.27
    1 + 2 + 3 0.48 0.10 0.06 116.83 94.42
    1 + 2 + 3 + 4 0.48 0.10 0.06 56.53 97.30
    1 + 2 + 3 + 4 + 5 0.48 0.10 0.06 48.75 97.67
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-05-10
  • 修回日期:  2023-09-11
  • 网络出版日期:  2024-11-12

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