NAME

Zhang Yahui

Paper Publications

三维车桥耦合系统的非平稳随机振动分析
  • Hits:
  • Indexed by:

    期刊论文

  • First Author:

    张志超

  • Correspondence Author:

    Zhang, Z.; State Key Laboratory of Structural Analysis and Industrial Equipment, Dalian University of Technology, Dalian 116023, China; email: zhangzc@student.edu.cn

  • Co-author:

    张亚辉,林家浩

  • Date of Publication:

    2010-03-30

  • Journal:

    应用力学学报

  • Included Journals:

    Scopus、PKU、ISTIC、CSCD

  • Document Type:

    J

  • Volume:

    27

  • Issue:

    1

  • Page Number:

    151-158

  • ISSN No.:

    1000-4939

  • Key Words:

    车桥系统;虚拟激励法;轨道激励;非平稳随机振动;精细积分法

  • Abstract:

    推导了线性时变系统非平稳随机响应的多维虚拟激励法,研究了三维车桥耦合系统受轨道激励而产生的非平稳随机振动.桥梁模型采用空间Euler梁单元,轨道激励假设为均匀调制多点异相位非平稳随机激励.采用多维虚拟激励法把轨道不平度转化为一系列简谐不平度的叠加,通过简单分解精细积分格式进行迭代计算,最终得到系统随机响应的时变功率谱及均方根.数值算例中,用时间历程法验证了本文方法的正确性,并且分析了方向、高低,水平三类轨道激励同时作用下三维车桥耦合系统的非平稳随机振动特性.

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