Analysis of seabed instability using element free Galerkin method
Wave-induced seabed instability, either momentary liquefaction or shear failure, is an important topic in ocean and coastal engineering. Many factors, such as seabed properties and wave parameters, affect the seabed instability. A non-dimensional parameter is proposed in this paper to evaluate the o...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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2007
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| Online Access: | http://eprints.um.edu.my/8809/1/Analysis_of_seabed_instability_using_element_free_Galerkin_method.pdf |
| _version_ | 1825719599008579584 |
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| author | Wang, J.G. Karim, M.R. Lin, P.Z. |
| author_facet | Wang, J.G. Karim, M.R. Lin, P.Z. |
| author_sort | Wang, J.G. |
| collection | UM |
| description | Wave-induced seabed instability, either momentary liquefaction or shear failure, is an important topic in ocean and coastal engineering. Many factors, such as seabed properties and wave parameters, affect the seabed instability. A non-dimensional parameter is proposed in this paper to evaluate the occurrence of momentary liquefaction. This parameter includes the properties of the soil and the wave. The determination of the wave-induced liquefaction depth is also suggested based on this non-dimensional parameter. As an example, a two-dimensional seabed with finite thickness is numerically treated with the EFGM meshless method developed early for wave-induced seabed responses. Parametric study is carried out to investigate the effect of wavelength, compressibility of pore fluid, permeability and stiffness of porous media, and variable stiffness with depth on the seabed response with three criteria for liquefaction. It is found that this non-dimensional parameter is a good index for identifying the momentary liquefaction qualitatively, and the criterion of liquefaction with seepage force can be used to predict the deepest liquefaction depth. |
| first_indexed | 2024-03-06T05:22:12Z |
| format | Article |
| id | um.eprints-8809 |
| institution | Universiti Malaya |
| language | English |
| last_indexed | 2024-03-06T05:22:12Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | um.eprints-88092014-03-20T02:32:42Z http://eprints.um.edu.my/8809/ Analysis of seabed instability using element free Galerkin method Wang, J.G. Karim, M.R. Lin, P.Z. TA Engineering (General). Civil engineering (General) Wave-induced seabed instability, either momentary liquefaction or shear failure, is an important topic in ocean and coastal engineering. Many factors, such as seabed properties and wave parameters, affect the seabed instability. A non-dimensional parameter is proposed in this paper to evaluate the occurrence of momentary liquefaction. This parameter includes the properties of the soil and the wave. The determination of the wave-induced liquefaction depth is also suggested based on this non-dimensional parameter. As an example, a two-dimensional seabed with finite thickness is numerically treated with the EFGM meshless method developed early for wave-induced seabed responses. Parametric study is carried out to investigate the effect of wavelength, compressibility of pore fluid, permeability and stiffness of porous media, and variable stiffness with depth on the seabed response with three criteria for liquefaction. It is found that this non-dimensional parameter is a good index for identifying the momentary liquefaction qualitatively, and the criterion of liquefaction with seepage force can be used to predict the deepest liquefaction depth. 2007 Article PeerReviewed application/pdf en http://eprints.um.edu.my/8809/1/Analysis_of_seabed_instability_using_element_free_Galerkin_method.pdf Wang, J.G. and Karim, M.R. and Lin, P.Z. (2007) Analysis of seabed instability using element free Galerkin method. Ocean Engineering, 34 (2). pp. 247-260. ISSN 0029-8018, DOI https://doi.org/10.1016/j.oceaneng.2006.01.004 <https://doi.org/10.1016/j.oceaneng.2006.01.004>. http://www.scopus.com/inward/record.url?eid=2-s2.0-33751424379&partnerID=40&md5=743c2286553c8700ae9af50404f6e70f http://www.sciencedirect.com/science/article/pii/S0029801806000886 DOI 10.1016/j.oceaneng.2006.01.004 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Wang, J.G. Karim, M.R. Lin, P.Z. Analysis of seabed instability using element free Galerkin method |
| title | Analysis of seabed instability using element free Galerkin method |
| title_full | Analysis of seabed instability using element free Galerkin method |
| title_fullStr | Analysis of seabed instability using element free Galerkin method |
| title_full_unstemmed | Analysis of seabed instability using element free Galerkin method |
| title_short | Analysis of seabed instability using element free Galerkin method |
| title_sort | analysis of seabed instability using element free galerkin method |
| topic | TA Engineering (General). Civil engineering (General) |
| url | http://eprints.um.edu.my/8809/1/Analysis_of_seabed_instability_using_element_free_Galerkin_method.pdf |
| work_keys_str_mv | AT wangjg analysisofseabedinstabilityusingelementfreegalerkinmethod AT karimmr analysisofseabedinstabilityusingelementfreegalerkinmethod AT linpz analysisofseabedinstabilityusingelementfreegalerkinmethod |