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    Modeling Free‐Field Conditions in Centrifuge Models

    Source: Journal of Geotechnical Engineering:;1990:;Volume ( 116 ):;issue: 009
    Author:
    J. A. Cheney
    ,
    R. K. Brown
    ,
    N. R. Dhat
    ,
    O. Y.Z. Hor
    DOI: 10.1061/(ASCE)0733-9410(1990)116:9(1347)
    Publisher: American Society of Civil Engineers
    Abstract: Stress waves generated by local excitation from machines travel away from a source and eventually are absorbed in the earth. Centrifuge models are plagued by the fact that such waves reflect off the sides of the sample container and distort the desired experimental conditions. The use of Duxseal in treating the boundaries of the container is tested and evaluated as to its efficacy in alleviating the reflection problem for a class of foundation vibration problems. The results are positive for small‐size sand centrifuge models subject to free surface vertical excitation, especially if the wall coverings are grooved. The prototype size corresponds to a depth and radius of 25–50 ft. A formula for the influence of a rigid substratum on natural frequency of vertical oscillation of a circular foundation is found.
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      Modeling Free‐Field Conditions in Centrifuge Models

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/20690
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    • Journal of Geotechnical Engineering

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    contributor authorJ. A. Cheney
    contributor authorR. K. Brown
    contributor authorN. R. Dhat
    contributor authorO. Y.Z. Hor
    date accessioned2017-05-08T20:35:49Z
    date available2017-05-08T20:35:49Z
    date copyrightSeptember 1990
    date issued1990
    identifier other%28asce%290733-9410%281990%29116%3A9%281347%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/20690
    description abstractStress waves generated by local excitation from machines travel away from a source and eventually are absorbed in the earth. Centrifuge models are plagued by the fact that such waves reflect off the sides of the sample container and distort the desired experimental conditions. The use of Duxseal in treating the boundaries of the container is tested and evaluated as to its efficacy in alleviating the reflection problem for a class of foundation vibration problems. The results are positive for small‐size sand centrifuge models subject to free surface vertical excitation, especially if the wall coverings are grooved. The prototype size corresponds to a depth and radius of 25–50 ft. A formula for the influence of a rigid substratum on natural frequency of vertical oscillation of a circular foundation is found.
    publisherAmerican Society of Civil Engineers
    titleModeling Free‐Field Conditions in Centrifuge Models
    typeJournal Paper
    journal volume116
    journal issue9
    journal titleJournal of Geotechnical Engineering
    identifier doi10.1061/(ASCE)0733-9410(1990)116:9(1347)
    treeJournal of Geotechnical Engineering:;1990:;Volume ( 116 ):;issue: 009
    contenttypeFulltext
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