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    A Condensation Method for the Dynamic Analysis of Vertical Vehicle–Track Interaction Considering Vehicle Flexibility

    Source: Journal of Vibration and Acoustics:;2015:;volume( 137 ):;issue: 004::page 41010
    Author:
    Chen, Yuanchang
    ,
    Zhang, Bangji
    ,
    Zhang, Nong
    ,
    Zheng, Minyi
    DOI: 10.1115/1.4029947
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper is aimed at developing a computationally efficient approach to simulate the vertical dynamic behavior of vehicle–track coupled system. With the finite element method, the car body, bogies, and rail are modeled as Euler beams supported by springs and dashpots, which can investigate the influence of flexibility of the vehicle on structural dynamic response. By a variant of componentmode synthesis (CMS), the degreesoffreedom (DOFs) within the substructures are condensed and the two substructures are coupled through nonlinear Hertzian theory. Although the system matrix is updated and factorized during the calculation, the total computational efficiency is significantly improved due to the much smaller size of the equations of motion and direct solution algorithm instead of iterative procedure. Compared with an existing model, the accuracy and efficiency of the method are investigated. Application of the model is shown by numerical example.
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      A Condensation Method for the Dynamic Analysis of Vertical Vehicle–Track Interaction Considering Vehicle Flexibility

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    http://yetl.yabesh.ir/yetl1/handle/yetl/160074
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    contributor authorChen, Yuanchang
    contributor authorZhang, Bangji
    contributor authorZhang, Nong
    contributor authorZheng, Minyi
    date accessioned2017-05-09T01:25:07Z
    date available2017-05-09T01:25:07Z
    date issued2015
    identifier issn1048-9002
    identifier othervib_137_04_041010.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/160074
    description abstractThis paper is aimed at developing a computationally efficient approach to simulate the vertical dynamic behavior of vehicle–track coupled system. With the finite element method, the car body, bogies, and rail are modeled as Euler beams supported by springs and dashpots, which can investigate the influence of flexibility of the vehicle on structural dynamic response. By a variant of componentmode synthesis (CMS), the degreesoffreedom (DOFs) within the substructures are condensed and the two substructures are coupled through nonlinear Hertzian theory. Although the system matrix is updated and factorized during the calculation, the total computational efficiency is significantly improved due to the much smaller size of the equations of motion and direct solution algorithm instead of iterative procedure. Compared with an existing model, the accuracy and efficiency of the method are investigated. Application of the model is shown by numerical example.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleA Condensation Method for the Dynamic Analysis of Vertical Vehicle–Track Interaction Considering Vehicle Flexibility
    typeJournal Paper
    journal volume137
    journal issue4
    journal titleJournal of Vibration and Acoustics
    identifier doi10.1115/1.4029947
    journal fristpage41010
    journal lastpage41010
    identifier eissn1528-8927
    treeJournal of Vibration and Acoustics:;2015:;volume( 137 ):;issue: 004
    contenttypeFulltext
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian
     
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian