[사] Determining Mechanical Properties of Yarns and Two-Ply Cords from Single-Filament Data: Part I: Model Development and Predictions 출판일 : 2000.11.01 저자 : David A. Zimliki, John M. Kennedy, Douglas E. Hirt, and Glen P. Reese 서지사항 : Textile Research Journal, Volume 70, Issue 11, 991페이지 등록일 : 2012.10.22 I 조회수 : 73 작성자 : admin |
The objective of this research is to construct a computer model that can predict the
properties of flat yams, twisted yams, and twisted cords from single-filament data. In this
model, a modulus versus strain curve is obtained by taking the derivative of the average
stress-strain curve from single-filament tensile tests. The distribution of elongation to break
is then fit to a Gaussian curve and a relationship is derived between filament elongation and
bundle elongation in a twisted structure. Using the principle of conserva tion of energy, the
forces from the surviving filaments at a specific strain are summed to yield the resulting
force on a ply, which is then used to calculate the tensile force on the cord. The model also
predicts elongation to break, tenacity at break, and initial modulus of yams and cords.
|