88 research outputs found
A comparison of Finite Elements for Nonlinear Beams: The absolute nodal coordinate and geometrically exact formulations
Two of the most popular finite element formulations for solving nonlinear beams are the absolute nodal coordinate and the geometrically exact approaches. Both can be applied to problems with very large deformations and strains, but they differ substantially at the continuous and the discrete levels. In addition, implementation and run-time computational costs also vary significantly. In the current work, we summarize the main features of the two formulations, highlighting their differences and similarities, and perform numerical benchmarks to assess their accuracy and robustness. The article concludes with recommendations for the choice of one formulation over the other
On the use of absolute interface coordinates in the floating frame of reference formulation for flexible multibody dynamics
An extension of coupled beam method and its application to study ship's hull-superstructure interaction problems
Finite element implementation for the analysis of 3D steel and composite frames subjected to fire
An interface-element formulation for the simulation of delamination with buckling
The paper describes a simple corotational formulation applied to one-dimensional interface elements which embed a fracturing procedure for mixed-mode delaminations. Having thereby introduced geometric non-linearity, the technique can be applied to situations involving a combination of buckling and delamination. Detailed comparisons are made with experimental results for such a problem
Dynamic finite element analysis applied to a simple model exhibiting dynamic instability
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