Details

Title

Modal Analysis of Laminated “CAS” and “CUS” Box-Beams

Journal title

Archive of Mechanical Engineering

Yearbook

2017

Numer

No 4

Publication authors

Keywords

Mechanical Engineering ; Mechanics of Materials

Divisions of PAS

Nauki Techniczne

Abstract

<jats:title>Abstract</jats:title><jats:p>In the paper, the authors discuss the numerical and experimental modal analysis of the cantilever thin-walled beams made of a carbon-epoxy laminate. Two types of beams were considered: circumferentially asymmetric stiffness (i.e., CAS) and circumferentially uniform stiffness (i.e., CUS) beams. The layer-up configurations of the laminate were chosen to get a vibration mode coupling effect in both analysed cases. The aim of the paper was to perform the numerical and experimental modal analysis of the composite structures, when a flapwise bending with torsion coupling effect or flapwise-chordwise bending coupling effect took place. Firstly, numerical studies by the finite element method was performed. The numerical simulations were carried out by the Lanczos method in the Abaqus software package. The natural frequencies and the corresponding free vibration modes were determined. Next, the experimental modal analyses of the CAS and CUS beams were performed. The test stand was consisted of a special grip, two beams with an adhered holder, the LMS Scadas III system with a modal hammer and an acceleration sensor. Finally, the results of both methods were compared.</jats:p>

Publisher

Polish Academy of Science, Committe of Machine Design

Date

2017

Identifier

ISSN 0004-0738, e-ISSN 2300-1895

DOI

10.1515/meceng-2017-0026

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