The dynamic characteristics of fibers in airflow affect the structure and performance of fabrics.In order to study the deformation behavior of flexible fibers under the flow field,CFD numerical simulation was used to explore the flow field distribution with velocity difference.Furthermore,the discrete element flexible fiber model was established using the coupled Euler-Lagrange method.The fiber trajectory was presented and its force and transfer deformation behavior in the differential flow field was discussed.Results show that the initial orientation angle of the fiber affects the bending effect.The increase of the angle tends to bend the fiber.The fiber feeding position affects the cumulative effect of airflow.The bending effect of fibers becomes more significant when the difference of the volume force of airflow force between fiber ends gets larger and the cumulative effect time is longer.Fiber interaction intensifies the delamination of fiber clusters,which is not conducive to the mixing and bending deformation of fibers.
关键词
有限元/离散元/空气流场/柔性纤维/转移变形
Key words
finite element method/discrete element method/air flow field/flexible fibers/fransfer deformation
维普
万方数据