Teacher Didina CAMPEAN, Teacher Ana FILIP BUCALAE, Teacher Elena Ancuta CIUREANU, Lecturer Ph.D. Liliana HRISTIAN
Rezumat
Lucrarea prezinta modele de interpolare matematica pentru determinarea limitei de elasticitate, punctul E din diagrama efort deformatie. Mai multe variante de materiale textile, tricótate din fire poliamidice si elastomere au fost testate pe dinamometrul electronic, aliura acestor diagrame efort-deformatie fiind prezentata in figura 1. Aproximarea curbei PT trebuie să aibă în vedere în primul rând aproximarea cât mai bună a zonei de elasticitate, deoarece in proiectarea materialelor textile ce necesita elasticitate marita caracteristicile reologice ocupa un rol definitoriu.
Cuvinte cheie: materiale textile cu elasticitate maritadiagrama efort –deformatieinterpolara polinomiala Hermite
Abstract
:This paper presents mathematical interpolation models for determining the elasticity limit, point E in the effort-deformation diagram. Several variants of textile materials, knitted with polyamide and elastomer threads, were tested on the electronic dynamometer; the overlap of these effort-deformation diagrams is presented in figure 1. For the approximation of the PT curve must first be considered the best approximation of the elasticity area, since the increased elasticity and the rheological characteristics play a core role in the design of textile materials.
Keywords: high elasticity textile materialstress-strain diagramHermite polynomial interpolation
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