Journal
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
Volume 97, Issue 2, Pages 111-129Publisher
WILEY-BLACKWELL
DOI: 10.1002/nme.4586
Keywords
virtual work; structural mechanics; constrained theories; geometrically exact beam; nonlinear beam elements
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In the present work, a new director-based finite element formulation for geometrically exact beams is proposed. The new beam finite element exhibits drastically improved numerical performance when compared with the previously developed director-based formulations. This improvement is accomplished by adjusting the underlying variational beam formulation to the specific features of the director interpolation. In particular, the present approach does not rely on the assumption of an orthonormal director frame. The excellent performance of the new approach is illustrated with representative numerical examples. Copyright (c) 2013 John Wiley & Sons, Ltd.
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