<div class="csl-bib-body">
<div class="csl-entry">El Chabaan, G., Heuer, R., & Unterweger, C. (2025, June 15). <i>Linear and Nonlinear Flexural Vibration Behavior of Bimodular Beams with Symmetric and Asymmetric Cross-Sections</i> [Conference Presentation]. COMPDYN 2025 - 10th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Rhodos, Greece. http://hdl.handle.net/20.500.12708/219528</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/219528
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dc.description.abstract
This study presents a mechanical model and numerical analysis of the dynamic response of a homogeneous Bernoulli-Euler beam, which incorporates classical boundary conditions and is subject to time-varying excitation. However, the beam is constructed from a bimodular material, characterized by differing Young’s moduli in tension and compression. This material property results in the neutral axis not passing through the geometric centroid of the cross-section, with its position dependent on the sign of the curvature. Consequently, the equation governing flexural oscillations is formulated using a model that involves effective two-layer laminates and a discontinuous neutral beam axis. Each of the two bending configurations is uniquely characterized by its neutral axis position, which is influenced not only by the elastic material properties but also by the geometric characteristics of a cross-section. Depending on the cross-sectional properties, the dynamic response of a bimodular beam may exhibit either linear or nonlinear behavior. When a difference in effective bending stiffness exists between upward and downward bending, deriving an exact closed-form solution for the entire motion domain expressed by a single equation becomes impossible. Therefore, isogeometric analysis is applied to provide an approximate solution, not just for linear but particularly for nonlinear vibration of a bimodular beam. The modified Newmark method is used to analyze responses in the time domain, while the harmonic balance method is specifically applied to investigate the frequency-response function to periodic excitation, emphasizing nonlinear bimodular beams. Finally, a numerical study is conducted to validate the efficacy of the isogeometric approach in the dynamic analysis of bimodular structures. A comparative analysis of the responses highlights the considerable impact of bimodular materials, particularly concerning their cross-sectional properties.
en
dc.language.iso
en
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dc.subject
bimodular beam
en
dc.subject
flexural vibrations
en
dc.subject
Effective Laminate
en
dc.subject
Isogeometric Analysis
en
dc.title
Linear and Nonlinear Flexural Vibration Behavior of Bimodular Beams with Symmetric and Asymmetric Cross-Sections
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.type.category
Conference Presentation
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tuw.researchTopic.id
M5
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tuw.researchTopic.id
C6
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tuw.researchTopic.id
C1
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tuw.researchTopic.name
Composite Materials
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tuw.researchTopic.name
Modeling and Simulation
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tuw.researchTopic.name
Computational Materials Science
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tuw.researchTopic.value
34
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tuw.researchTopic.value
33
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tuw.researchTopic.value
33
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tuw.publication.orgunit
E212-03 - Forschungsbereich Baumechanik und Baudynamik
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tuw.author.orcid
0009-0005-4521-9860
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tuw.event.name
COMPDYN 2025 - 10th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
en
tuw.event.startdate
15-06-2025
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tuw.event.enddate
18-06-2025
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tuw.event.online
On Site
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tuw.event.type
Event for scientific audience
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tuw.event.place
Rhodos
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tuw.event.country
GR
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tuw.event.presenter
El Chabaan, Galeb
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wb.sciencebranch
Bauingenieurwesen
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wb.sciencebranch.oefos
2011
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wb.sciencebranch.value
100
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item.languageiso639-1
en
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item.grantfulltext
none
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item.openairetype
conference paper not in proceedings
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item.openairecristype
http://purl.org/coar/resource_type/c_18cp
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item.cerifentitytype
Publications
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item.fulltext
no Fulltext
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crisitem.author.dept
E212-03 - Forschungsbereich Baumechanik und Baudynamik
-
crisitem.author.dept
E212-03 - Forschungsbereich Baumechanik und Baudynamik
-
crisitem.author.dept
E212-03 - Forschungsbereich Baumechanik und Baudynamik
