Abstract
The paper presents modelling proposal of the curvilinear scraper arm geometry by means of Bezier' s curve of the third degree. A physical model of scraping process of the unit load with the use of curvilinear arm for the most difficult sorting cases has been worked out. As a result of the performed numerical optimisation, there has been proposed the scraper arm shape geometry that makes it possible to decrease dynamic interaction exerted on the sorted loads.
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