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Recommended finite element formulations for the analysis of offshore blast walls in an explosion

Lookup NU author(s): Dr Do Kyun Kim

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Abstract

This study suggests relevant finite element (FE) formulations for the structural analysis of offshore blast walls subjected to blast loadings due to hydrocarbon explosions. The present blast wall model adopted from HSE (2003)consists of a corrugated panel and supporting members, and was modelled with shell, thick-shell, and solid element combinations in LS-DYNA, an explicit finite element analysis (FEA) solver. Stainless and mild steels were employed as materials for the blast wall model, with consideration of strain rate effect throughout ten (10) pulse pressure load regimes. The obtained FEA results were validated by experimental data from HSE (2003) with decent agreement. In the present study, recommended FE formulations with additional hourglass control functions were widely discussed from the perspectives of solution accuracy and computational cost based on a statistical approach. The obtained outcomes could be used for the structural analysis and design of offshore blast walls in the estimations of maximum and permanent deformations under blast loadings.


Publication metadata

Author(s): Kim DK, Ng WCK, Hwang OJ, Sohn JM, Lee EB

Publication type: Article

Publication status: Published

Journal: Latin American Journal of Solids and Structures

Year: 2018

Volume: 15

Issue: 10

Print publication date: 10/09/2018

Online publication date: 17/08/2018

Acceptance date: 13/08/2018

Date deposited: 29/08/2019

ISSN (print): 1679-7817

ISSN (electronic): 1679-7825

Publisher: MARCÍLIO ALVES

URL: https://doi.org/10.1590/1679-78255172

DOI: 10.1590/1679-78255172


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