::INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES::

CODEN : IAJPBB
issn 2349-7750

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TITLE:

INVESTIGATION OF CONTACT FORCES OF INTERACTION OF PARTICLES OF BULK MATERIALS DURING THEIR MOVEMENT IN HELICAL DRUMS

AUTHORS:

Alexey Marchenko, Georgiy Serga, Vladimir Frolov

ABSTRACT:

The results of an analytical study of the movement of particles of loose materials in screw drums are presented. It is shown that forces arise as a result of stochastic (probable) collisions of particles with each other and the properties of the walls of a screw drum to transfer pressure to flows of particles of bulk materials. Shown: - model of contact of particles of bulk materials in a screw drum; - a graph of the change in the magnitude of the sliding velocity in the sequence of contacting the particles of bulk materials; - the density distribution of the contacting particles of bulk materials; - the model of contacting particles of bulk materials and the scheme of their contact taking into account dynamic equilibrium; - Varieties of screw drums. The search for designs of screw drums was performed using descriptive geometry and engineering graphics using the Kompas-ZD software package. A general analysis of the kinematics of the movement of particles of bulk materials, an analytical study of the real process with the aim of choosing a conditional model of its description and obtaining an analytical relationship to determine the contact forces of interaction of N particles of bulk materials. Keywords: contact forces, particles of bulk materials, stochastic phenomena, directional contacts, friction forces.