[섬유] Modeling and Computer Simulation of the Compressional Behavior of Fiber Assemblies: Part I: Comparison to van Wyk's Theory 출판일 : 2002.04.01 저자 : Norman B. Beil and William W. Roberts, JR 서지사항 : Textile Research Journal, Volume 72, Issue 4, 341페이지 등록일 : 2012.10.29 I 조회수 : 74 작성자 : admin |
A model is presented that allows prediction of the properties of a fiber assembly under
compression from the physical properties of its component fibers, taking into account both
static and kinetic friction. Unlike previous models, this model is not based on the assumed
behavior of idealized bending elements. Computer simulations are run for four cases with
two different friction conditions in order to compare predictions of this model with
experimental results and with van Wyk's theory of the uniaxial compression of an initially
random fiber assembly. These simulations are the first to show a reasonable ability to
predict the undeter mined constant K in van Wyk's equation. They also show a significandy
greater number of fiber-fiber contacts being formed than theories based only on the diameter
and arrangement of fibers have predicted. The predicted contacts have a wide range of
contact forces, while only a small percentage of them do not slip. Further improvements to
the predictive abilities of this model may be obtained by running larger simulations,
modifying the boundary conditions, and incorporating a more realistic friction model.
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