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NONLINEAR STABILITY ANALYSIS OF HYBRID GRID SHELLS.

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Title: NONLINEAR STABILITY ANALYSIS OF HYBRID GRID SHELLS.
Authors: CAI, JIANGUO1, GU, LEMING1, XU, YIXIANG2, FENG, JIAN1, ZHANG, JIN1
Source: International Journal of Structural Stability & Dynamics. Feb2013, Vol. 13 Issue 1, p-1. 16p. 1 Diagram, 2 Charts, 13 Graphs.
Subjects: Mechanical buckling, Nonlinear theories, Hybrid systems, Stiffness (Mechanics), Elastoplasticity, Tension loads, Stability (Mechanics)
Abstract: In this paper, we investigate the buckling capacity of a hybrid grid shell, which is made of quadrangular meshes diagonally stiffened by pre-tensioned thin cables. The eigenvalue buckling, geometrical nonlinear elastic buckling and elasto-plastic buckling analyses of the hybrid structure were carried out. Then the influences of the shape and scale of imperfections on the elasto-plastic buckling loads were discussed. Also, the effects of different structural parameters, such as the rise-to-span ratio, cross-section of beams, area and pre-stress of cables and boundary conditions, on the failure load were investigated. The results show that the buckling capacity is reduced when taking into account the material nonlinearity. Furthermore, the hybrid structure is highly imperfection sensitive and the reduction of the failure load due to imperfections can be considerable. The proper shape and scale of the imperfection are also important. It is also shown that there exists an optimal rise-to-span ratio resulting in a relatively high buckling capacity for a specific span. Moreover, the enlarging of the cross-section of steel beams notably improves the stability performance of the structure. However, the area and pre-stress of cables pose small effect on the structural stability. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Structural Stability & Dynamics is the property of World Scientific Publishing Company 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.)
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DbLabel: Engineering Source
An: 85924250
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PubTypeId: academicJournal
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  Data: NONLINEAR STABILITY ANALYSIS OF HYBRID GRID SHELLS.
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Structural+Stability+%26+Dynamics%22">International Journal of Structural Stability & Dynamics</searchLink>. Feb2013, Vol. 13 Issue 1, p-1. 16p. 1 Diagram, 2 Charts, 13 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Mechanical+buckling%22">Mechanical buckling</searchLink><br /><searchLink fieldCode="DE" term="%22Nonlinear+theories%22">Nonlinear theories</searchLink><br /><searchLink fieldCode="DE" term="%22Hybrid+systems%22">Hybrid systems</searchLink><br /><searchLink fieldCode="DE" term="%22Stiffness+%28Mechanics%29%22">Stiffness (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Elastoplasticity%22">Elastoplasticity</searchLink><br /><searchLink fieldCode="DE" term="%22Tension+loads%22">Tension loads</searchLink><br /><searchLink fieldCode="DE" term="%22Stability+%28Mechanics%29%22">Stability (Mechanics)</searchLink>
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  Data: In this paper, we investigate the buckling capacity of a hybrid grid shell, which is made of quadrangular meshes diagonally stiffened by pre-tensioned thin cables. The eigenvalue buckling, geometrical nonlinear elastic buckling and elasto-plastic buckling analyses of the hybrid structure were carried out. Then the influences of the shape and scale of imperfections on the elasto-plastic buckling loads were discussed. Also, the effects of different structural parameters, such as the rise-to-span ratio, cross-section of beams, area and pre-stress of cables and boundary conditions, on the failure load were investigated. The results show that the buckling capacity is reduced when taking into account the material nonlinearity. Furthermore, the hybrid structure is highly imperfection sensitive and the reduction of the failure load due to imperfections can be considerable. The proper shape and scale of the imperfection are also important. It is also shown that there exists an optimal rise-to-span ratio resulting in a relatively high buckling capacity for a specific span. Moreover, the enlarging of the cross-section of steel beams notably improves the stability performance of the structure. However, the area and pre-stress of cables pose small effect on the structural stability. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of International Journal of Structural Stability & Dynamics is the property of World Scientific Publishing Company 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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RecordInfo BibRecord:
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        Value: 10.1142/S0219455413500065
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      – Code: eng
        Text: English
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        PageCount: 16
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      – SubjectFull: Mechanical buckling
        Type: general
      – SubjectFull: Nonlinear theories
        Type: general
      – SubjectFull: Hybrid systems
        Type: general
      – SubjectFull: Stiffness (Mechanics)
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      – SubjectFull: Elastoplasticity
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      – SubjectFull: Tension loads
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      – SubjectFull: Stability (Mechanics)
        Type: general
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      – TitleFull: NONLINEAR STABILITY ANALYSIS OF HYBRID GRID SHELLS.
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            NameFull: CAI, JIANGUO
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            NameFull: GU, LEMING
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            NameFull: XU, YIXIANG
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              Text: Feb2013
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              Y: 2013
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