Research Information System
Man-Made Textiles in India, vol.51, no.9, pp.299-302, 2023 (Scopus)
Beating in the resonance mode allows reducing the magnitude of the shock impulse on the seed leading to the reducing degree of damage to the seeds. It is believed that in the initial position, the seeds are drawn to the slit of the contact gap of the knife-drum machine due to the tension of the fibers in the contact. At this moment, the seeds at the end of the strand move only under the action of an elastic restoring force. The active part of the fiber bundle section in a dynamic process can be as little as 0.001 or less. The average value of the compliance coefficient for the raw cotton variety BA-440 was determined experimentally. This allows determining the stiffness coefficient of the volatiles indirectly. According to the obtained parameters, the dynamic state of the system practically falls into the region of parametric resonance, where the motion is unstable. This means that the seeds at the end of the strand increase significantly after the impact of the beater, which leads to the separation of the seeds from the fibers.