Deformation behavior of fiber flow field based on discrete-finite element algorithm
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.
finite element methoddiscrete element methodair flow fieldflexible fibersfransfer deformation
万方数据
维普
