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Article

Influence of Hole Localization on Local and Global Dynamic Response of Thin-Walled Laminated Cantilever Beam

Department of Applied Mechanics, Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka Str. 36, 20-618 Lublin, Poland
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Author to whom correspondence should be addressed.
Materials 2021, 14(23), 7409; https://doi.org/10.3390/ma14237409
Submission received: 2 November 2021 / Revised: 27 November 2021 / Accepted: 30 November 2021 / Published: 3 December 2021
(This article belongs to the Special Issue Advanced Composite Materials: Theory, Design and Applications)

Abstract

In this study, we discuss the effects of the diameter and position of a hole on the dynamic response of a thin-walled cantilever beam made of carbon-epoxy laminate. Eigen-frequencies and corresponding global and local eigen-modes were considered, where deformations of the beam wall were dominant, without significant deformation of the beam axis. The study was focused on the circumferentially uniform stiffness (CUS) beam configuration. The laminate layers were arranged as [90/15(3)/90/15(3)/90]T. The finite element method was employed for numerical tests, using the Abaqus software package. Moreover, a few numerical results of the structure’s behaviour, with and without a hole, were verified experimentally. The experimental eigen-frequencies and the corresponding modes were obtained using an experimental modal analysis, comprising the LMS system with modal hammer. We found that the size and location of the hole affected the eigen-frequencies and corresponding modes. Furthermore, even a small hole in a beam could significantly change the shape of its local modes. The numerical and experimental results were observed to have high qualitative compliance.
Keywords: thin-walled structure; laminate; CUS beam; experimental modal analysis; eigenvalues; hole-like defect; closed cross-section thin-walled structure; laminate; CUS beam; experimental modal analysis; eigenvalues; hole-like defect; closed cross-section

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MDPI and ACS Style

Bochenski, M.; Gawryluk, J.; Teter, A. Influence of Hole Localization on Local and Global Dynamic Response of Thin-Walled Laminated Cantilever Beam. Materials 2021, 14, 7409. https://doi.org/10.3390/ma14237409

AMA Style

Bochenski M, Gawryluk J, Teter A. Influence of Hole Localization on Local and Global Dynamic Response of Thin-Walled Laminated Cantilever Beam. Materials. 2021; 14(23):7409. https://doi.org/10.3390/ma14237409

Chicago/Turabian Style

Bochenski, Marcin, Jaroslaw Gawryluk, and Andrzej Teter. 2021. "Influence of Hole Localization on Local and Global Dynamic Response of Thin-Walled Laminated Cantilever Beam" Materials 14, no. 23: 7409. https://doi.org/10.3390/ma14237409

APA Style

Bochenski, M., Gawryluk, J., & Teter, A. (2021). Influence of Hole Localization on Local and Global Dynamic Response of Thin-Walled Laminated Cantilever Beam. Materials, 14(23), 7409. https://doi.org/10.3390/ma14237409

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