Research on the bursting performance of warp-knitted jacquard spacer shoe materials based on Abaqus

Abstract

To investigate the failure issue of shoe upper materials, six types of warp-knitted jacquard spacer shoe materials with different proportions of thick, thin, and mesh structures were selected. Bursting experiments were conducted at three rates (100, 300, and 500 mm/min), and the effects of rate and structural parameters on bursting performance were systematically analyzed. At the same time, in order to achieve the rapid screening of the optimal upper material for functional areas, reduce and avoid the waste of raw materials caused by sampling and performance testing, a finite element model was established based on the optimal structure at 300 mm/min, and the feasibility of the model was further verified through simplified structure experiments by removing the spacer layer and the plain-cloth bottom layer. The results show that: the bursting performance of fabrics with different jacquard layer structures changes non-monotonically with the increase of the rate, and reaches a peak at 300 mm/min; the finite element model can effectively predict the fabric bursting process with an error less than 9 %; its jacquard layer structure model further indicates that this method can better simulate the force conditions of the coil structure during bursting, providing new ideas for the optimization of shoe material process design.