A yarn interaction model for circular braiding

作者：van Ravenhorst J H^*; Akkerman R^*

来源：Composites Part A: Applied Science and Manufacturing , 2016, 81: 254-263.

DOI：10.1016/j.compositesa.2015.11.026

• Analytical modeling
• Automation
• Braiding
• Preform

Machine control data for the automation of the circular braiding process has been generated using previously published mathematical models that neglect yarn interaction. This resulted in a significant deviation from the required braid angle at mandrel cross-sectional changes, likely caused by an incorrect convergence zone length, in turn caused by this neglect. Therefore the objective is to use a new model that includes the yarn interaction, assuming an axisymmetrical biaxial process with a cylindrical mandrel and Coulomb friction. Experimental validation with carbon yarns and a 144 carrier machine confirms a convergence zone length decrease of 25% with respect to a model without yarn interaction for the case analyzed, matching the model prediction using a coefficient of friction of around 0.3.

• 出版日期2016-2