Potential assessment of cargo liquefaction based on an UBC3D-PLM model

Lei Ju; Dracos Vassalos

Potential assessment of cargo liquefaction based on an UBC3D-PLM model

Lei Ju, Dracos Vassalos

Naval Architecture, Ocean And Marine Engineering

Research output: Contribution to conference › Paper › peer-review

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Abstract

Fluidization of fine particle cargoes, resulting in cargo shift and loss of stability, has caused the loss of many lives in numerous marine casualties over the past decades. Since the dangers of cargo fluidization have long been known to the shipping industry, the question of why the phenomenon is resurfacing now would be a legitimate one. With this in mind, an UBC3D-PLM model based on FEM theory in the commercial software PLAXIS is presented in this paper to consider soil DSS (Direct Simple Shear) test to verify the model. To assess the cargo fluidization potential, an evaluating method is presented in the paper considering cargo fluidization. Shaking table tests with different amplitude, frequency and initial degree of saturation of cargos were studied to predict time-domain characteristics. This method in the paper could be feasibly used as a reference and possibly support a suitable regulatory framework to the fluidization analysis of ship stability.

Original language	English
Pages	1123-1131
Number of pages	9
Publication status	Published - 19 Jun 2015
Event	12th International Conference on the Stability of Ships and Ocean Vehicles (STAB 2015) - University of Strathclyde, Glasgow, United Kingdom Duration: 14 Jun 2015 → 19 Jun 2015

Conference

Conference	12th International Conference on the Stability of Ships and Ocean Vehicles (STAB 2015)
Country	United Kingdom
City	Glasgow
Period	14/06/15 → 19/06/15

Keywords

cargo liquefaction
UBC3D-PLM
ship stability

Access to Document

Ju-Vassalos-STAB-2015-potential-assessment-of-cargo-liquefactionAccepted author manuscript, 1 MB

http://www.shipstab.org

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Cite this

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title = "Potential assessment of cargo liquefaction based on an UBC3D-PLM model",

abstract = "Fluidization of fine particle cargoes, resulting in cargo shift and loss of stability, has caused the loss of many lives in numerous marine casualties over the past decades. Since the dangers of cargo fluidization have long been known to the shipping industry, the question of why the phenomenon is resurfacing now would be a legitimate one. With this in mind, an UBC3D-PLM model based on FEM theory in the commercial software PLAXIS is presented in this paper to consider soil DSS (Direct Simple Shear) test to verify the model. To assess the cargo fluidization potential, an evaluating method is presented in the paper considering cargo fluidization. Shaking table tests with different amplitude, frequency and initial degree of saturation of cargos were studied to predict time-domain characteristics. This method in the paper could be feasibly used as a reference and possibly support a suitable regulatory framework to the fluidization analysis of ship stability.",

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AU - Vassalos, Dracos

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AB - Fluidization of fine particle cargoes, resulting in cargo shift and loss of stability, has caused the loss of many lives in numerous marine casualties over the past decades. Since the dangers of cargo fluidization have long been known to the shipping industry, the question of why the phenomenon is resurfacing now would be a legitimate one. With this in mind, an UBC3D-PLM model based on FEM theory in the commercial software PLAXIS is presented in this paper to consider soil DSS (Direct Simple Shear) test to verify the model. To assess the cargo fluidization potential, an evaluating method is presented in the paper considering cargo fluidization. Shaking table tests with different amplitude, frequency and initial degree of saturation of cargos were studied to predict time-domain characteristics. This method in the paper could be feasibly used as a reference and possibly support a suitable regulatory framework to the fluidization analysis of ship stability.

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