Crashworthiness Analysis of S-Shaped Structures Under Axial Impact Loading
Abstract To mitigate shock forces in collision events, thin-walled members are used as energy absorber. In this article, crashworthiness of single-cell and multi-cell S-shaped members with various cross-sections including triangular, square, hexagonal, decagon and circular were investigated under ax...
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Format: | Article |
Language: | English |
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Marcílio Alves
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Series: | Latin American Journal of Solids and Structures |
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Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252017000500743&lng=en&tlng=en |
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author | Sobhan Esmaeili-Marzdashti Sadjad Pirmohammad Sareh Esmaeili-Marzdashti |
author_facet | Sobhan Esmaeili-Marzdashti Sadjad Pirmohammad Sareh Esmaeili-Marzdashti |
author_sort | Sobhan Esmaeili-Marzdashti |
collection | DOAJ |
description | Abstract To mitigate shock forces in collision events, thin-walled members are used as energy absorber. In this article, crashworthiness of single-cell and multi-cell S-shaped members with various cross-sections including triangular, square, hexagonal, decagon and circular were investigated under axial dynamic loading using finite element code LS-DYNA. Furthermore, crashworthiness of the S-rails with the same outer tubes and different inner ones was studied as well. The multi-cell members employed in this task were double-walled tubes with several ribs connecting the inner and outer tubes together. Modified multi criteria decision making method known as complex proportional assessment (COPRAS) was used to rank the members using three conflicting crashworthiness criteria namely specific energy absorber (SEA), peak crash force (Fmax) and crash force efficiency (CFE). Moreover, the multi-cell S-shaped members were found to perform better than single-cell ones in terms of crashworthiness. In addition, the multi-cell S-rail with decagonal cross-section was found as the best energy absorber, and also the S-rail having the same inner and outer tube with decagonal cross-section displayed desirable crashworthiness performance. Optimum geometry of this S-rail was eventually obtained from the parametric study. |
first_indexed | 2024-04-13T00:33:57Z |
format | Article |
id | doaj.art-f00599afdbdf420ea39776d4d4cbb531 |
institution | Directory Open Access Journal |
issn | 1679-7825 |
language | English |
last_indexed | 2024-04-13T00:33:57Z |
publisher | Marcílio Alves |
record_format | Article |
series | Latin American Journal of Solids and Structures |
spelling | doaj.art-f00599afdbdf420ea39776d4d4cbb5312022-12-22T03:10:24ZengMarcílio AlvesLatin American Journal of Solids and Structures1679-782514574376410.1590/1679-78253430S1679-78252017000500743Crashworthiness Analysis of S-Shaped Structures Under Axial Impact LoadingSobhan Esmaeili-MarzdashtiSadjad PirmohammadSareh Esmaeili-MarzdashtiAbstract To mitigate shock forces in collision events, thin-walled members are used as energy absorber. In this article, crashworthiness of single-cell and multi-cell S-shaped members with various cross-sections including triangular, square, hexagonal, decagon and circular were investigated under axial dynamic loading using finite element code LS-DYNA. Furthermore, crashworthiness of the S-rails with the same outer tubes and different inner ones was studied as well. The multi-cell members employed in this task were double-walled tubes with several ribs connecting the inner and outer tubes together. Modified multi criteria decision making method known as complex proportional assessment (COPRAS) was used to rank the members using three conflicting crashworthiness criteria namely specific energy absorber (SEA), peak crash force (Fmax) and crash force efficiency (CFE). Moreover, the multi-cell S-shaped members were found to perform better than single-cell ones in terms of crashworthiness. In addition, the multi-cell S-rail with decagonal cross-section was found as the best energy absorber, and also the S-rail having the same inner and outer tube with decagonal cross-section displayed desirable crashworthiness performance. Optimum geometry of this S-rail was eventually obtained from the parametric study.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252017000500743&lng=en&tlng=enMulti-cell membersS-railsaxial dynamic loadingcrashworthinessCOPRAS |
spellingShingle | Sobhan Esmaeili-Marzdashti Sadjad Pirmohammad Sareh Esmaeili-Marzdashti Crashworthiness Analysis of S-Shaped Structures Under Axial Impact Loading Latin American Journal of Solids and Structures Multi-cell members S-rails axial dynamic loading crashworthiness COPRAS |
title | Crashworthiness Analysis of S-Shaped Structures Under Axial Impact Loading |
title_full | Crashworthiness Analysis of S-Shaped Structures Under Axial Impact Loading |
title_fullStr | Crashworthiness Analysis of S-Shaped Structures Under Axial Impact Loading |
title_full_unstemmed | Crashworthiness Analysis of S-Shaped Structures Under Axial Impact Loading |
title_short | Crashworthiness Analysis of S-Shaped Structures Under Axial Impact Loading |
title_sort | crashworthiness analysis of s shaped structures under axial impact loading |
topic | Multi-cell members S-rails axial dynamic loading crashworthiness COPRAS |
url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252017000500743&lng=en&tlng=en |
work_keys_str_mv | AT sobhanesmaeilimarzdashti crashworthinessanalysisofsshapedstructuresunderaxialimpactloading AT sadjadpirmohammad crashworthinessanalysisofsshapedstructuresunderaxialimpactloading AT sarehesmaeilimarzdashti crashworthinessanalysisofsshapedstructuresunderaxialimpactloading |