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Rigorous Joining of Asymptotic Beam Models to Three-Dimensional Finite Element Models

Huimin Song1, Dewey H. Hodges1

Daniel Guggenheim School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0150

Computer Modeling in Engineering & Sciences 2012, 85(3), 239-278. https://doi.org/10.3970/cmes.2012.085.239

Abstract

The present paper presents a rigorous approach that can accurately and efficiently capture the linear, static and free-vibration behaviors of a beam-like structure by the rigorous combination of a one-dimensional beam model with a three-dimensional continuum model. This study focuses on coupling these disparate finite element types, putting them both into a single finite element model while making use of the asymptotically exact information available as part of the beam model, which itself is obtained by asymptotic dimensional reduction. The coupling is undertaken by use of appropriate transformation matrices at the interface together with stress and displacement recovery relations that are part of the beam theory. Results obtained from the so-called joined model" are compared with those from a finely meshed model using three-dimensional brick elements. It is demonstrated that the present approach provides accurate solutions for effects previously available only from three-dimensional models. However, because the joined model uses far fewer elements than a full three-dimensional model, the joined model is more efficient.

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APA Style
Song, H., Hodges, D.H. (2012). Rigorous joining of asymptotic beam models to three-dimensional finite element models. Computer Modeling in Engineering & Sciences, 85(3), 239-278. https://doi.org/10.3970/cmes.2012.085.239
Vancouver Style
Song H, Hodges DH. Rigorous joining of asymptotic beam models to three-dimensional finite element models. Comput Model Eng Sci. 2012;85(3):239-278 https://doi.org/10.3970/cmes.2012.085.239
IEEE Style
H. Song and D.H. Hodges, “Rigorous Joining of Asymptotic Beam Models to Three-Dimensional Finite Element Models,” Comput. Model. Eng. Sci., vol. 85, no. 3, pp. 239-278, 2012. https://doi.org/10.3970/cmes.2012.085.239



cc Copyright © 2012 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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