TY - JOUR
T1 - The effect of yarn distortion on the mechanical properties of 3D four-directional braided composites
AU - Guo-dong, Fang
AU - Jun, Liang
AU - Yu, Wang
AU - Bao-lai, Wang
PY - 2009/4
Y1 - 2009/4
N2 - A representative volume cell (RVC) is chosen to analyze the mechanical properties of 3D (3 dimensions) four-directional braided composites. Owing to braid yarns (an assembly of fibers) squeezing against each other in the braided composites, the braid yarns are distorted. Based on geometrical characteristics of the braided composites, cross-section of each braid yarn is supposed to be an octagon and divided into seven regions in the RVC. The distortion characteristics of yarns are considered in each region. Elastic properties of each region obtained by stochastic function theory are introduced into finite element model to calculate the mechanical properties of the RVC. The influences of yarn distortion on the stiffness and strength of the braided composites are obtained and discussed.
AB - A representative volume cell (RVC) is chosen to analyze the mechanical properties of 3D (3 dimensions) four-directional braided composites. Owing to braid yarns (an assembly of fibers) squeezing against each other in the braided composites, the braid yarns are distorted. Based on geometrical characteristics of the braided composites, cross-section of each braid yarn is supposed to be an octagon and divided into seven regions in the RVC. The distortion characteristics of yarns are considered in each region. Elastic properties of each region obtained by stochastic function theory are introduced into finite element model to calculate the mechanical properties of the RVC. The influences of yarn distortion on the stiffness and strength of the braided composites are obtained and discussed.
KW - A. Polymer (textile) fiber
KW - B. Mechanical properties
KW - C. Stochastic function theory
UR - http://www.scopus.com/inward/record.url?scp=62649104152&partnerID=8YFLogxK
U2 - 10.1016/j.compositesa.2008.12.007
DO - 10.1016/j.compositesa.2008.12.007
M3 - Article
AN - SCOPUS:62649104152
SN - 1359-835X
VL - 40
SP - 343
EP - 350
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
IS - 4
ER -