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Numerical study on the effects of yarn mechanical transverse properties on the ballistic impact behavior of textile fabric

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2012
auteur(s) Ha Minh Cuong; Imad Abdellatif; Boussu François; Kanit Toufik; Crepin David
journal (abréviation) Journal of Strain Analysis for Engineering Design (JSA)
volume (numéro) 47 (7)
pages 524 – 534
résumé A numerical model of ballistic impact on a two-dimensional Kevlar KM2® plain-woven fabric has been validated by experiment. This paper shows that it is necessary to experimentally measure material constants of yarns for having good input parameters of the model. Effects of yarn Poisson’s ratio, transverse and shear modulus on impact behaviors of a simple crimped yarn and a complete fabric have been carried out. The effect of the Poisson’s ratio can be negligible in both impact cases: on a single crimped yarn and a complete fabric. The same conclusion has been proven for the effect of the transversal modulus except the cases of its so low values that can cause yarn early damage. The shear modulus of a yarn appears to be an important material parameter that mainly influences the ballistic performance of a two-dimensional plain-woven fabric. When using a very high value of a shear modulus of yarn, a crimped single yarn is broken immediately after contact with projectile in pure shearing mode.
mots clés Finite element analysis two-dimensional woven fabric ballistic impact transversal mechanical properties damage mechanisms fracture
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