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Thermal and mechanical post-buckling analysis of the composite truncated conical shells reinforced with the lattice core.

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Title: Thermal and mechanical post-buckling analysis of the composite truncated conical shells reinforced with the lattice core.
Authors: Sajjadi, M. S.1 (AUTHOR), Shaterzadeh, A. R.1 (AUTHOR) a_shaterzadeh@shahroodut.ac.ir
Source: Acta Mechanica. Jan2026, Vol. 237 Issue 1, p67-88. 22p.
Subjects: Conical shells, Composite structures, Galerkin methods, Stress-strain curves, Thermal stresses, Stiffners, Differential thermal analysis
Abstract: In this study, the thermal post-buckling behavior of a truncated composite conical shell with a lattice core and two composite layers is investigated. The shell is subjected to a uniform and linear temperature rise in thickness direction with simply supported boundary conditions at both ends. The shell is assumed to have an initial geometric imperfection and a lattice core composed of three stiffeners types: longitudinal (stringer), radial (ring), and helical with constant helical angles. The governing equations are derived based on the classical shell theory, incorporating nonlinear stress–strain relations under thermal loading. The compatibility equations are solved using the Galerkin method and the method of undetermined coefficients to predict the thermal buckling loads and post-buckling response. Numerical results validate the proposed model by comparison with previous studies and show that the reinforcement pattern significantly affects the thermal buckling performance. Among the configurations, the helical stiffeners yield the highest thermal resistance. [ABSTRACT FROM AUTHOR]
Copyright of Acta Mechanica is the property of Springer Nature 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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DbLabel: Engineering Source
An: 190821516
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PubTypeId: academicJournal
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  Data: Thermal and mechanical post-buckling analysis of the composite truncated conical shells reinforced with the lattice core.
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  Data: <searchLink fieldCode="AR" term="%22Sajjadi%2C+M%2E+S%2E%22">Sajjadi, M. S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shaterzadeh%2C+A%2E+R%2E%22">Shaterzadeh, A. R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> a_shaterzadeh@shahroodut.ac.ir</i>
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  Data: <searchLink fieldCode="JN" term="%22Acta+Mechanica%22">Acta Mechanica</searchLink>. Jan2026, Vol. 237 Issue 1, p67-88. 22p.
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  Data: <searchLink fieldCode="DE" term="%22Conical+shells%22">Conical shells</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+structures%22">Composite structures</searchLink><br /><searchLink fieldCode="DE" term="%22Galerkin+methods%22">Galerkin methods</searchLink><br /><searchLink fieldCode="DE" term="%22Stress-strain+curves%22">Stress-strain curves</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+stresses%22">Thermal stresses</searchLink><br /><searchLink fieldCode="DE" term="%22Stiffners%22">Stiffners</searchLink><br /><searchLink fieldCode="DE" term="%22Differential+thermal+analysis%22">Differential thermal analysis</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this study, the thermal post-buckling behavior of a truncated composite conical shell with a lattice core and two composite layers is investigated. The shell is subjected to a uniform and linear temperature rise in thickness direction with simply supported boundary conditions at both ends. The shell is assumed to have an initial geometric imperfection and a lattice core composed of three stiffeners types: longitudinal (stringer), radial (ring), and helical with constant helical angles. The governing equations are derived based on the classical shell theory, incorporating nonlinear stress–strain relations under thermal loading. The compatibility equations are solved using the Galerkin method and the method of undetermined coefficients to predict the thermal buckling loads and post-buckling response. Numerical results validate the proposed model by comparison with previous studies and show that the reinforcement pattern significantly affects the thermal buckling performance. Among the configurations, the helical stiffeners yield the highest thermal resistance. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Acta Mechanica is the property of Springer Nature 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: 10.1007/s00707-025-04525-0
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        Text: English
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        Type: general
      – SubjectFull: Composite structures
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      – SubjectFull: Galerkin methods
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      – SubjectFull: Stiffners
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      – SubjectFull: Differential thermal analysis
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              Text: Jan2026
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