Geometrically exact beam finite element formulated on the special Euclidean group SE(3)

Geometrically exact beam finite element formulated on the special Euclidean group SE(3). Sonneville, V., Cardona, A., & Brüls, O. Computer Methods in Applied Mechanics and Engineering, 268:451–474, January, 2014.

Paper doi abstract bibtex

This paper describes a dynamic formulation of a straight beam finite element in the setting of the special Euclidean group SE(3). First, the static and dynamic equilibrium equations are derived in this framework from variational principles. Then, a non-linear interpolation formula using the exponential map is introduced. It is shown that this framework leads to a natural coupling in the interpolation of the position and rotation variables. Next, the discretized internal and inertia forces are developed. The semi-discrete equations of motion take the form of a second-order ordinary differential equation on a Lie group, which is solved using a Lie group time integration scheme. It is remarkable that no parameterization of the nodal variables needs to be introduced and that the proposed Lie group framework leads to a compact and easy-to-implement formulation. Some important numerical and theoretical aspects leading to a computationally efficient strategy are highlighted and discussed. For instance, the formulation leads to invariant tangent stiffness and mass matrices under rigid body motions and a locking free element. The proposed formulation is successfully tested in several numerical static and dynamic examples.

@article{sonneville_geometrically_2014,
	title = {Geometrically exact beam finite element formulated on the special {Euclidean} group {SE}(3)},
	volume = {268},
	issn = {0045-7825},
	url = {http://www.sciencedirect.com/science/article/pii/S0045782513002600},
	doi = {10.1016/j.cma.2013.10.008},
	abstract = {This paper describes a dynamic formulation of a straight beam finite element in the setting of the special Euclidean group SE(3). First, the static and dynamic equilibrium equations are derived in this framework from variational principles. Then, a non-linear interpolation formula using the exponential map is introduced. It is shown that this framework leads to a natural coupling in the interpolation of the position and rotation variables. Next, the discretized internal and inertia forces are developed. The semi-discrete equations of motion take the form of a second-order ordinary differential equation on a Lie group, which is solved using a Lie group time integration scheme. It is remarkable that no parameterization of the nodal variables needs to be introduced and that the proposed Lie group framework leads to a compact and easy-to-implement formulation. Some important numerical and theoretical aspects leading to a computationally efficient strategy are highlighted and discussed. For instance, the formulation leads to invariant tangent stiffness and mass matrices under rigid body motions and a locking free element. The proposed formulation is successfully tested in several numerical static and dynamic examples.},
	urldate = {2018-08-03TZ},
	journal = {Computer Methods in Applied Mechanics and Engineering},
	author = {Sonneville, V. and Cardona, A. and Brüls, O.},
	month = jan,
	year = {2014},
	keywords = {Dynamic beam, Finite element, Lie group, Special Euclidean group},
	pages = {451--474}
}

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