• Login
    View Item 
    •   Home
    • UA Graduate and Undergraduate Research
    • UA Theses and Dissertations
    • Dissertations
    • View Item
    •   Home
    • UA Graduate and Undergraduate Research
    • UA Theses and Dissertations
    • Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of UA Campus RepositoryCommunitiesTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournalThis CollectionTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournal

    My Account

    LoginRegister

    About

    AboutUA Faculty PublicationsUA DissertationsUA Master's ThesesUA Honors ThesesUA PressUA YearbooksUA CatalogsUA Libraries

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Disturbed state modeling for dynamic and liquefaction analysis

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    azu_td_9817355_sip1_m.pdf
    Size:
    2.918Mb
    Format:
    PDF
    Download
    Author
    Park, Inn-Joon, 1965-
    Issue Date
    1997
    Keywords
    Applied Mechanics.
    Geotechnology.
    Engineering, Civil.
    Advisor
    Desai, C. S.
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    Although a number of models have been proposed to characterize behavior of geological materials including elastic, plastic, and cyclic loading responses, few constitutive models have been developed for the behavior of fully saturated sands and interfaces including liquefaction under dynamic loading. Such realistic constitutive models play an important role in analyzing and predicting the response and design of soil-structure interaction systems. Also, in the engineering view of the complexity of the material behavior, it becomes necessary to develop and use computer procedure (finite element method) for the analysis and prediction of behavior of geotechnical problems. A general concept, called the disturbed state concept (DSC), that can characterize behavior of geological material is developed in this dissertation for the behavior of saturated sands and sand-steel interfaces. The DSC model is an unified approach and allows hierarchical use of the model for factors such as elastic and plastic strains, damage, and softening and stiffening. The model parameters for a saturated sand and a sand-steel interface are evaluated using data from comprehensive laboratory tests; truly triaxial test device for the saturated sand and cyclic multi-degree-of-freedom device (CYMDOF-P) for the interface. The laboratory test results are also used for the verification of DSC model. In general, the model predictions were found to provide satisfactory correlation with the test results. The DSC model with the foregoing parameters is implemented in a nonlinear dynamic finite element program(DSC-DYN2D). It is used to solve two boundary value problems-an axially loaded pile and a shaking table test-involving the interface behavior for pile and the liquefaction for shake table. A new and highly efficient method is used to determine the liquefaction in saturated materials. This method is based on the changing microstructure of the material and allows identification of liquefaction based on the critical disturbance, Dc which is the point where the curvature of the disturbance function is the minimum. Based on the results of this research, it can be stated that the DSC model is capable of characterizing the cyclic behavior of saturated sands and interfaces and the liquefaction instability under dynamic and earthquake loading.
    Type
    text
    Dissertation-Reproduction (electronic)
    Degree Name
    Ph.D.
    Degree Level
    doctoral
    Degree Program
    Graduate College
    Civil Engineering and Engineering Mechanics
    Degree Grantor
    University of Arizona
    Collections
    Dissertations

    entitlement

     
    The University of Arizona Libraries | 1510 E. University Blvd. | Tucson, AZ 85721-0055
    Tel 520-621-6442 | repository@u.library.arizona.edu
    DSpace software copyright © 2002-2017  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.