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Crash performance of cellular foams with reduced relative density part 1: rib thickness variation.

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Title: Crash performance of cellular foams with reduced relative density part 1: rib thickness variation.
Authors: Henderson, B.1, Whitty, J. P. M.1 jpw1mpo@bolton.ac.uk, Myler, P.1, Chirwa, C.2
Source: International Journal of Crashworthiness. 2007, Vol. 12 Issue 6, p677-688. 12p. 2 Diagrams, 4 Charts, 5 Graphs.
Subjects: Crash testing of automobiles, Foam, Colloids, Foamed materials, Plastic foams
Abstract: Finite element modelling at the macroscopic level is used to investigate the effect of varying the rib thickness of open cell conventional and re-entrant periodic foams on the crash performance due to energy absorption. The data show that the mechanical properties and, hence, crashworthiness vary not only with foam-relative density, but also on how the relative density variation is achieved. Reducing the 'diagonal' rib thickness leads to a more marked decrease in Ey as well as in Ex, whereas νxy and νyx both increase in magnitude. The results have implications for applications in which the crashworthiness is to be maximised or minimised with respect to reduction in the relative density. The crashworthiness of orthotropic re-entrant foams is also shown to be considerably greater than conventional foams in one principal direction. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Crashworthiness is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 35730008
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Crash performance of cellular foams with reduced relative density part 1: rib thickness variation.
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  Data: <searchLink fieldCode="AR" term="%22Henderson%2C+B%2E%22">Henderson, B.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Whitty%2C+J%2E+P%2E+M%2E%22">Whitty, J. P. M.</searchLink><relatesTo>1</relatesTo><i> jpw1mpo@bolton.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Myler%2C+P%2E%22">Myler, P.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Chirwa%2C+C%2E%22">Chirwa, C.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Crashworthiness%22">International Journal of Crashworthiness</searchLink>. 2007, Vol. 12 Issue 6, p677-688. 12p. 2 Diagrams, 4 Charts, 5 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Crash+testing+of+automobiles%22">Crash testing of automobiles</searchLink><br /><searchLink fieldCode="DE" term="%22Foam%22">Foam</searchLink><br /><searchLink fieldCode="DE" term="%22Colloids%22">Colloids</searchLink><br /><searchLink fieldCode="DE" term="%22Foamed+materials%22">Foamed materials</searchLink><br /><searchLink fieldCode="DE" term="%22Plastic+foams%22">Plastic foams</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Finite element modelling at the macroscopic level is used to investigate the effect of varying the rib thickness of open cell conventional and re-entrant periodic foams on the crash performance due to energy absorption. The data show that the mechanical properties and, hence, crashworthiness vary not only with foam-relative density, but also on how the relative density variation is achieved. Reducing the 'diagonal' rib thickness leads to a more marked decrease in Ey as well as in Ex, whereas νxy and νyx both increase in magnitude. The results have implications for applications in which the crashworthiness is to be maximised or minimised with respect to reduction in the relative density. The crashworthiness of orthotropic re-entrant foams is also shown to be considerably greater than conventional foams in one principal direction. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Crashworthiness is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1080/13588260701789342
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      – Code: eng
        Text: English
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        PageCount: 12
        StartPage: 677
    Subjects:
      – SubjectFull: Crash testing of automobiles
        Type: general
      – SubjectFull: Foam
        Type: general
      – SubjectFull: Colloids
        Type: general
      – SubjectFull: Foamed materials
        Type: general
      – SubjectFull: Plastic foams
        Type: general
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      – TitleFull: Crash performance of cellular foams with reduced relative density part 1: rib thickness variation.
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            – D: 01
              M: 11
              Text: 2007
              Type: published
              Y: 2007
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