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Title: Element-independent pure deformational and co-rotational methods for triangular shell elements in geometrically nonlinear analysis
Authors: Tang, YQ 
Liu, YP 
Chan, SL 
Keywords: Element-independent co-rotational formulation
Geometrically nonlinear analysis
Pure deformation
Triangular shell element
Issue Date: 2018
Publisher: World Scientific
Source: International journal of structural stability and dynamics, 2018, v. 18, no. 5, 1850065 How to cite?
Journal: International journal of structural stability and dynamics 
Abstract: Proposed herein is a novel pure deformational method for triangular shell elements that can decrease the element quantities and simplify the element formulation. This approach has computational advantages over the conventional finite element method for linear and nonlinear problems. In the element level, this method saves time for computing stresses, internal forces and stiffness matrices. A flat shell element is formed by a membrane element and a plate element, so that the pure deformational membrane and plate elements are derived and discussed separately in this paper. Also, it is very convenient to incorporate the proposed pure deformational method into the element-independent co-rotational (EICR) framework for geometrically nonlinear analysis. Thus, on the basis of the pure deformational method, a novel EICR formulation is proposed which is simpler and has more clear physical characteristics than the traditional formulation. In addition, a triangular membrane element with drilling rotations and the discrete Kirchhoff triangular plate element are used to verify the proposed pure deformational method, although several benchmark problems are employed to verify the robustness and accuracy of the proposed EICR formulations.
ISSN: 0219-4554
EISSN: 1793-6764
DOI: 10.1142/S0219455418500657
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