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A Review on the Discrete Element Modeling of Dynamic Laboratory Tests for Liquefaction AssessmentAuthors: akhila.m@research.iiit.ac.in ,Neelima Satyam Journal: ejge (link) Volume: 20 Pages: 21-46 Date: 2015-01-05 Report no: IIIT/TR/2015/6 AbstractThe purpose of this review paper is to present different techniques used in geotechnics for numerical modeling, recent advances and laboratory testing and gap areas in numerical modeling of dynamic laboratory tests. Numerical modeling of laboratory tests is essential for understanding the basic processes occurring in soil during dynamic loading. The review begins by explaining the discrete nature of soil and difficulties when attempting to model their inherent characteristics, different continuum and discontinuum methods available with detailed review on discrete element method. The significance of laboratory testing, drawbacks and the essence of numerical modeling of laboratory testing are discussed. The different types of dynamic laboratory tests for high strain conditions each (cyclic triaxial, torsional shear and cyclic shear test) are outlined, together with a discussion on how to obtain the necessary parameters for the models. The states of the art associated with 2D and 3D numerical modeling of these tests is presented in detail. Finally, the outstanding issues in the subject are listed and the research gaps in the topic were highlighted. Full article: pdf Centre for Earthquake Engineering |
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