Study of the Vibrations of Some Composite Bars with Polypropylene Honeycomb Core and Carbon Fiber and Fiberglass Fabric Faces
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Published:2022-10-03
Issue:3
Volume:59
Page:1-12
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ISSN:0025-5289
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Container-title:Materiale Plastice
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language:en
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Short-container-title:Mater. Plast.
Author:
Bolcu Alexandru,Stanescu Marius Marinel,Bolcu Dumitru,Ciuca Ion,Bogdan Mihaela,Dinita Alin,Sarbu Nicolae
Abstract
The paper generalizes the Timoshenko model for thick bars, using a new model that is applied to the vibration study of multilayer composite bars. In the proposed mathematical model, three coefficients are introduced that take into account the non-uniformities of the tangential and normal stresses in the bar section. The vibrations of some composite bars with a polypropylene honeycomb core with a thickness of 10 mm, 15 mm and 20 mm are experimentally studied, on the faces of which one or two layers of carbon fiber, respectively glass fiber was poured. For each analysed bar, the stiffness and the equivalent modulus of elasticity are determined and the variation of the damping coefficient according to the length of the bar is studied.
Publisher
Revista de Chimie SRL
Subject
Materials Chemistry,Polymers and Plastics,Mechanics of Materials,General Chemistry