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    Implementation of the Critical Unstable Condition in Extended Finite-Element Analysis to Calculate the Safety Factor of a Predefined Slip Surface

    Source: International Journal of Geomechanics:;2019:;Volume ( 019 ):;issue: 003
    Author:
    Lu Shi; Bing Bai; Xiaochun Li
    DOI: 10.1061/(ASCE)GM.1943-5622.0001356
    Publisher: American Society of Civil Engineers
    Abstract: This study incorporated the critical unstable condition into extended finite-element analysis to determine the safety factor of a slip surface that is regarded as a discontinuity embedded into the slope mesh. The displacement field and the safety factor can be obtained simultaneously by directly solving the final nonlinear equations. Moreover, the augmented Lagrange multiplier method and the vital vertex algorithm were used to improve the accuracy of the normal stress on the slip surface. Three examples were presented to demonstrate various aspects of the proposed method, including its efficiency in searching for the critical slip surface without remeshing and sensitivity to the finite-element mesh.
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      Implementation of the Critical Unstable Condition in Extended Finite-Element Analysis to Calculate the Safety Factor of a Predefined Slip Surface

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    contributor authorLu Shi; Bing Bai; Xiaochun Li
    date accessioned2019-03-10T12:07:40Z
    date available2019-03-10T12:07:40Z
    date issued2019
    identifier other%28ASCE%29GM.1943-5622.0001356.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4254933
    description abstractThis study incorporated the critical unstable condition into extended finite-element analysis to determine the safety factor of a slip surface that is regarded as a discontinuity embedded into the slope mesh. The displacement field and the safety factor can be obtained simultaneously by directly solving the final nonlinear equations. Moreover, the augmented Lagrange multiplier method and the vital vertex algorithm were used to improve the accuracy of the normal stress on the slip surface. Three examples were presented to demonstrate various aspects of the proposed method, including its efficiency in searching for the critical slip surface without remeshing and sensitivity to the finite-element mesh.
    publisherAmerican Society of Civil Engineers
    titleImplementation of the Critical Unstable Condition in Extended Finite-Element Analysis to Calculate the Safety Factor of a Predefined Slip Surface
    typeJournal Paper
    journal volume19
    journal issue3
    journal titleInternational Journal of Geomechanics
    identifier doi10.1061/(ASCE)GM.1943-5622.0001356
    page04018200
    treeInternational Journal of Geomechanics:;2019:;Volume ( 019 ):;issue: 003
    contenttypeFulltext
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