Abstract:

In 2-Dimensional braiding process, if the initial braiding height is too high or low, or take-up speed is changed, those would lead to instability of the braiding angle for a period of time.By mathematical modeling, this paper establish the constitutive equation between braiding height and time, and between braiding angle and time. And the models can precisely forecast the time of unsteady state and the length of the braiding fabric during the unsteady state. Furthermore, the model is verified by the overbraiding experiment. And the experimental results shows that the model can effectively forcast the change of braiding angle with time and the length of the braiding fabric during the unsteady state.

Key words: dynamical movement of creating point, braiding angle, hysteresis, prediction model