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GBT post-buckling analysis based on the Implicit Corotational Method
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DOI：10.1016/j.ijsolstr.2018.12.011.png)
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Abstract
En 中文
In this work, the post-buckling analysis of thin-walled beams by using the Generalized Beam Theory (GBT) is presented. To this purpose, a geometrically nonlinear GBT finite element is developed by exploiting the features of mixed-stress GBT finite element formulation in the framework of the Implicit Corotational Method (ICM). The application of the ICM to GBT is briefly discussed and the details necessary to successfully transform the linear GBT finite element in its nonlinear counterpart are illustrated. The numerical results show how the proposed finite element can deal with global and distortional geometrically nonlinear phenomena, in good accordance with respect to 3D shell models. (C) 2018 Elsevier Ltd. All rights reserved.
Keywords:
Generalized Beam Theory (GBT)
Geometrical nonlinearity
Corotational kinematics
Path-following
Cross-section deformation
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