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Resat Kosker

ON INTERNAL STABILITY LOSS OF A ROW UNIDIRECTED PERIODICALLY LOCATED FIBERS IN THE VISCO-ELASTIC MATRIX

ABSTRACT
In the present paper, the microbuckling or internal stability loss in the viscoelastic composites containing unidirected fibers under compression along the fibers is studied by use of piecewise homogeneous body model. In this model, it is used the Three-Dimensional Geometrically Nonlinear Exact Equations of Viscoelasticity Theory. The composite material was considered as an infinite viscoelastic body with a row unidirected periodically located elastic fibers that have an initial infinitesimal imperfection. When the initial imperfection starts to increase and becomes indefinitely, this is taken as a stability loss criterion and co-phase microbuckling mode out of plane are taken into account. The numerical results about the influence of the interaction between the fibers on the values of the critical time are abtained and presented.
KEYWORDS
critical time, internal stability loss, microbuckling, unidirected fibrous composites, row fibers, viscoelastic composite
PAPER SUBMITTED: 2018-11-28
PAPER REVISED: 2018-12-26
PAPER ACCEPTED: 2019-01-15
PUBLISHED ONLINE: 2019-03-09
DOI REFERENCE: https://doi.org/10.2298/TSCI181128055K
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Supplement 1, PAGES [S427 - S438]
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On internal stability loss of a row unidirected periodically located fibers in the visco-elastic matrix

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