Abstract:

Focusing on problems that the pattern design of cardigan is complicated and existing CAD software designs the pattern only by the weave plan and thus can not show the actual effect, the loop structure model of knit loop, tuck stitch, cross stitch and floating line baesd on weft knitting was established, and yarn connection modes after different types of loops were combined, and the logical relation between the organization collocation principle and yarn arrangement was put forward. Combined with spring-mass model, the deformation due to the pulling among fifferent loops of cardigan was investigated, the mass point stressing was analyzed, and the loop deformation was simulated. With the present loop model, the cardigan basic CAD design was realized by VC++. By the rendering of OpenGL, the two-dimensional  model has a three-dimensional simulation effect. Therefore, the pattern of cardigan can be designed directly by the coil diagram, and the resulting patterns are real.

Key words: wdft-dnitted fabric, loop model, stitch collocation, spring-mass model, deformation