| Title: | Constitutive modeling and computer methods in geotechnical engineering |
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| Authors: | ID Desai, Chandrakant (Author)
ID Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru (Copyright holder) |
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| Files: |  Acta_geotechnica_Slovenica_2010_Desai_Constitutive_modeling_and_computer_methods_in_geotechnical_engineering.pdf (1,09 MB)
MD5: 85B28432B259F023BC94443AC59E3224
PID: 20.500.12556/dkum/ff7eb4ee-a0e5-4af5-876b-7396eea479fb
 http://fgserver3.fg.um.si/journal-ags/2010-1/article-1.asp
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
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| Abstract: | Computer methods are in the forefront of the procedures for analysis and design for geotechnical problems. Constitutive models that characterize the behavior of geologic materials and interfaces/joints play a vital role in the solutions obtained by using computer methods or any other solution procedure. The literature on both constitutive and computer models is wide; attention in this paper is devoted to the disturbed state concept (DSC) for constitutive modeling and the finite element method for computer solutions. The disturbed state concept, a unified and hierarchical approach, provides a unified framework for characterization of the behavior of geologic materials and interfaces/joints. Important factors such as elastic, plastic and creep responses, stress paths, volume change (contraction and dilation), disturbance (softening and damage or stiffening), thermal effects, partial saturation and liquefaction can be included in the same DSC framework. Because of its hierarchical nature, simplified models for specific applications can be derived from the DSC. It has been applied successfully for defining behavior of many geologic materials and interfaces/joints.
Procedures for the determination of parameters for the DSC models based on laboratory tests have been developed. Various models from the DSC have been validated at the specimen level with respect to laboratory test data. They have been validated at the practical boundary value problem level by comparing observed behavior in the field and/or simulated problems in the laboratory with predictions using computer (finite element) procedures in which DSC has been implemented; these have been presented in various publications by Desai and coworkers, and are listed in the References. Three typical examples of such validations at the practical problem level are included in this paper. It is believed that the DSC can provide unified and powerful models for a wide range of geomechanical and other engineering materials, and interfaces/joints. |
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| Keywords: | constitutive modeling, disturbed state concept, DSC, geologic materials, interfaces/joints |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Year of publishing: | 2010 |
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| Number of pages: | str. 5-29 |
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| Numbering: | Letn. 7, št. 1 |
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| PID: | 20.500.12556/DKUM-70724  |
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| ISSN: | 1854-0171 |
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| UDC: | 551:624.13 |
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| ISSN on article: | 1854-0171 |
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| COBISS.SI-ID: | 257451264 |
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| NUK URN: | URN:SI:UM:DK:DCKNWHDW |
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| Copyright: | Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru |
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| Publication date in DKUM: | 11.06.2018 |
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| Views: | 924 |
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| Downloads: | 97 |
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| Metadata: |    |
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| Categories: | Misc.
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