[비의류제품] Analysis of Geometrical Parameters using a CAD System for a 3-D Braided Preform 출판일 : 2008.10.01 저자 : Tea Jin Kang, Sungjun Kim, Kyungho Jung 서지사항 : Textile Research Journal, Volume 78, Issue 10, 922 페이지 등록일 : 2011.08.01 I 조회수 : 212 작성자 : admin |
To estimate the precise mechanical properties of the three-dimensional (3-D) braided
composite, a geometric study of a 3-D braided preform was performed. Describing yarn
paths using third-order spline curves, which are close to the real pathway of the 3-D
braided structure, the unit cells and the representative volume elements were determined.
Finally, the CAD system for the 3-D circular braided preform was developed following these
modeling sequences and applied to the parametric study of the preforms. A parametric study
was conducted on the important geometric factors such as yarn retraction factor, yarn
orientation angle, and yarn volume fraction and the theoretical maximum yarn volume fraction
was determined. Using the developed CAD system, the relationships between processing
variables and geometric parameters have been established.
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