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Comparative evaluation of concrete constitutive models in blast loaded shaped structural units.

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Title: Comparative evaluation of concrete constitutive models in blast loaded shaped structural units.
Authors: Punnappilly, Sreekumar1 sreekumaracademic@gmail.com, Kaliyamoorthy, Baskar2 kbaskar@nitt.edu
Source: Archives of Civil Engineering (Polish Academy of Sciences). 2025, Vol. 71 Issue 2, p521-536. 16p.
Subjects: Blast effect, Linear acceleration, Numerical integration, Emulsions
Abstract: The displacement response of a cylindrical and an apsidal shaped structural unit under blast loading is compared in this study using the finite element code LS-DYNA utilizing two different concrete constitutive models, namely the Riedel–Hiermaier–Thoma (RHT) model and the Continuous Surface Cap Model (CSCM). The blast load generated by an emulsion explosive corresponding to six scaled distances is used for the study. The validation of the displacement response is carried out by utilizing the Newmark numerical integration procedure using the linear acceleration method. The unique apsidal shape in its displacement response performs better across all the simulations indicating superior blast resistance. CSCM model returns conservative values of displacements in the study. The study finds that the RHT model requires higher stress levels for consideration of dynamic strengths and hence returns lower displacement values for the instances considered in this simulation. This study recommends the use of an apsidal unit and the use of RHT constitutive model in the simulations. [ABSTRACT FROM AUTHOR]
Copyright of Archives of Civil Engineering (Polish Academy of Sciences) is the property of Polish Academy of Sciences 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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  Data: Comparative evaluation of concrete constitutive models in blast loaded shaped structural units.
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  Data: <searchLink fieldCode="AR" term="%22Punnappilly%2C+Sreekumar%22">Punnappilly, Sreekumar</searchLink><relatesTo>1</relatesTo><i> sreekumaracademic@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Kaliyamoorthy%2C+Baskar%22">Kaliyamoorthy, Baskar</searchLink><relatesTo>2</relatesTo><i> kbaskar@nitt.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Archives+of+Civil+Engineering+%28Polish+Academy+of+Sciences%29%22">Archives of Civil Engineering (Polish Academy of Sciences)</searchLink>. 2025, Vol. 71 Issue 2, p521-536. 16p.
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  Data: <searchLink fieldCode="DE" term="%22Blast+effect%22">Blast effect</searchLink><br /><searchLink fieldCode="DE" term="%22Linear+acceleration%22">Linear acceleration</searchLink><br /><searchLink fieldCode="DE" term="%22Numerical+integration%22">Numerical integration</searchLink><br /><searchLink fieldCode="DE" term="%22Emulsions%22">Emulsions</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The displacement response of a cylindrical and an apsidal shaped structural unit under blast loading is compared in this study using the finite element code LS-DYNA utilizing two different concrete constitutive models, namely the Riedel–Hiermaier–Thoma (RHT) model and the Continuous Surface Cap Model (CSCM). The blast load generated by an emulsion explosive corresponding to six scaled distances is used for the study. The validation of the displacement response is carried out by utilizing the Newmark numerical integration procedure using the linear acceleration method. The unique apsidal shape in its displacement response performs better across all the simulations indicating superior blast resistance. CSCM model returns conservative values of displacements in the study. The study finds that the RHT model requires higher stress levels for consideration of dynamic strengths and hence returns lower displacement values for the instances considered in this simulation. This study recommends the use of an apsidal unit and the use of RHT constitutive model in the simulations. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Archives of Civil Engineering (Polish Academy of Sciences) is the property of Polish Academy of Sciences 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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        Value: 10.24425/ace.2025.154135
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      – Code: eng
        Text: English
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        PageCount: 16
        StartPage: 521
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      – SubjectFull: Blast effect
        Type: general
      – SubjectFull: Linear acceleration
        Type: general
      – SubjectFull: Numerical integration
        Type: general
      – SubjectFull: Emulsions
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      – TitleFull: Comparative evaluation of concrete constitutive models in blast loaded shaped structural units.
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              Text: 2025
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