Discrete mathematical model of extruder with varied power capacities of heaters and dynamic of polymer phase distribution
Journal Title: Вісник Житомирського державного технологічного університету. Серія: Технічні науки - Year 2019, Vol 83, Issue 1
Abstract
Constant growth and development of society contribute to increasing consumption, which leads to the development of production, but also increases competition and product requirements. High-quality goods can only be obtained using modern digital systems. For their synthesis it is necessary to make a large number of experiments with the equipment, that can lead to significant losses. The best solution is to create models that allow getting results quickly and without significant manufacturing costs. A discrete model of extruder with varied power capacities of heaters in a cylindrical coordinate system has been obtained, taking into account the temperature distribution along the length for each element, as well as the temperature distribution along the radius of the barrel and the screw. The model allows taking into account the influence of the heat current of each individual heater to change the total thermal field. Changes in heat capacity and density in accordance with the phase composition of the polymer have been taken into account. Dynamics of the phase composition of the polymer is also provided, depending on the current thermal and material flows. An algorithm for calculating the phase composition of a polymer is developed, depending on the previous value and its temperature. The obtained model can be used to predict the quality of the finished polymer product and to synthesize the control system taking into account the effect of heterogeneous perturbations.
Authors and Affiliations
A. І. Zhuchenko, A. O. Dankevich
Keywords
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