Mechanical behavior of thin-walled steel under hard contact with rigid seabed rock: Theoretical contact approach and nonlinear FE calculation

This work aims to investigate the mechanical behavior of steel-plated structures under a raking incident and to quantify the effect of the mesh size in nonlinear finite element (NLFE) analysis. To conveniently comprehend nonlinear phenomena, i.e., the grounding which takes place in this work, a seri...

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Autores principales:	Rio Prabowo Aditya, Tuswan Tuswan, Adiputra Ristiyanto, Do Quang Thang, Sohn Jung Min, Surojo Eko, Imaduddin Fitrian
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	ship grounding thin-walled steel nonlinear fe method Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/c92d84e3442f492bb12423823ef623f4
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spelling	oai:doaj.org-article:c92d84e3442f492bb12423823ef623f42021-12-05T14:10:52ZMechanical behavior of thin-walled steel under hard contact with rigid seabed rock: Theoretical contact approach and nonlinear FE calculation0334-89382191-024310.1515/jmbm-2021-0016https://doaj.org/article/c92d84e3442f492bb12423823ef623f42021-10-01T00:00:00Zhttps://doi.org/10.1515/jmbm-2021-0016https://doaj.org/toc/0334-8938https://doaj.org/toc/2191-0243This work aims to investigate the mechanical behavior of steel-plated structures under a raking incident and to quantify the effect of the mesh size in nonlinear finite element (NLFE) analysis. To conveniently comprehend nonlinear phenomena, i.e., the grounding which takes place in this work, a series of theoretical contact formulations was defined. In the main analysis, raking, which is a part of the grounding scenario, was strictly assumed as contact between a tanker, which was assumed to have thin-walled steel, and a seabed rock in the form of a solid obstruction. Designed raking scenarios were calculated using the FE method by using the nonlinear phenomena of the material behavior in the calculation. The findings of this work indicated that the possibility of expanding the recommended mesh size in FE simulation should be evaluated by quantifying the behavior of structural responses, such as energy, the force damage pattern, and acceleration, subjected to a variety of applied meshing techniques. The results concluded that a notable difference occurred when the mesh size was more than 132 mm (ratio 11 based on the plate dimension in this work), and this size is strictly recommended to be used for calculation of the element length-to-thickness (ELT) ratio. Assessment in time simulation showed that applying larger mesh sizes will reduce the simulation time but increase the maximum values of the crashworthiness parameters, i.e., energy, force, acceleration, and displacement.Rio Prabowo AdityaTuswan TuswanAdiputra RistiyantoDo Quang ThangSohn Jung MinSurojo EkoImaduddin FitrianDe Gruyterarticleship groundingthin-walled steelnonlinear fe methodMechanical engineering and machineryTJ1-1570ENJournal of the Mechanical Behavior of Materials, Vol 30, Iss 1, Pp 156-170 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ship grounding thin-walled steel nonlinear fe method Mechanical engineering and machinery TJ1-1570
spellingShingle	ship grounding thin-walled steel nonlinear fe method Mechanical engineering and machinery TJ1-1570 Rio Prabowo Aditya Tuswan Tuswan Adiputra Ristiyanto Do Quang Thang Sohn Jung Min Surojo Eko Imaduddin Fitrian Mechanical behavior of thin-walled steel under hard contact with rigid seabed rock: Theoretical contact approach and nonlinear FE calculation
description	This work aims to investigate the mechanical behavior of steel-plated structures under a raking incident and to quantify the effect of the mesh size in nonlinear finite element (NLFE) analysis. To conveniently comprehend nonlinear phenomena, i.e., the grounding which takes place in this work, a series of theoretical contact formulations was defined. In the main analysis, raking, which is a part of the grounding scenario, was strictly assumed as contact between a tanker, which was assumed to have thin-walled steel, and a seabed rock in the form of a solid obstruction. Designed raking scenarios were calculated using the FE method by using the nonlinear phenomena of the material behavior in the calculation. The findings of this work indicated that the possibility of expanding the recommended mesh size in FE simulation should be evaluated by quantifying the behavior of structural responses, such as energy, the force damage pattern, and acceleration, subjected to a variety of applied meshing techniques. The results concluded that a notable difference occurred when the mesh size was more than 132 mm (ratio 11 based on the plate dimension in this work), and this size is strictly recommended to be used for calculation of the element length-to-thickness (ELT) ratio. Assessment in time simulation showed that applying larger mesh sizes will reduce the simulation time but increase the maximum values of the crashworthiness parameters, i.e., energy, force, acceleration, and displacement.
format	article
author	Rio Prabowo Aditya Tuswan Tuswan Adiputra Ristiyanto Do Quang Thang Sohn Jung Min Surojo Eko Imaduddin Fitrian
author_facet	Rio Prabowo Aditya Tuswan Tuswan Adiputra Ristiyanto Do Quang Thang Sohn Jung Min Surojo Eko Imaduddin Fitrian
author_sort	Rio Prabowo Aditya
title	Mechanical behavior of thin-walled steel under hard contact with rigid seabed rock: Theoretical contact approach and nonlinear FE calculation
title_short	Mechanical behavior of thin-walled steel under hard contact with rigid seabed rock: Theoretical contact approach and nonlinear FE calculation
title_full	Mechanical behavior of thin-walled steel under hard contact with rigid seabed rock: Theoretical contact approach and nonlinear FE calculation
title_fullStr	Mechanical behavior of thin-walled steel under hard contact with rigid seabed rock: Theoretical contact approach and nonlinear FE calculation
title_full_unstemmed	Mechanical behavior of thin-walled steel under hard contact with rigid seabed rock: Theoretical contact approach and nonlinear FE calculation
title_sort	mechanical behavior of thin-walled steel under hard contact with rigid seabed rock: theoretical contact approach and nonlinear fe calculation
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/c92d84e3442f492bb12423823ef623f4
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Mechanical behavior of thin-walled steel under hard contact with rigid seabed rock: Theoretical contact approach and nonlinear FE calculation

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