The method for calculating the main technological parameters of a set with a curved shape of knives is presented. The aim of the work is to design a disk set with circumferential knives and to determine dependencies that allow predicting the technical and technological parameters of this set, the quality of the resulting semi-finished product during grinding, increasing the productivity of the grinding plant and reducing energy consumption during grinding. For the first time, a numerical method has been developed for calculating the second cutting length (Ls) of a knife set with a curved shape of knives, taking into account the main geometric parameters of the set. The geometric construction of the knife set of grinding machines allows to purposefully predict its use for various modes of the grinding process in the production of certain types of finished products. The research results can be used in the design of new types of headsets, their manufacture and operation.
The paper presents an information system for calculating the main paper-forming parameters of the pulp for given technological and design parameters of the grinding plant. The operation of the system is based on mathematical regression models of the processes that were obtained in the course of experimental studies of knife sets of various types. As input parameters in these models, the rotor speed, knife gap, concentration and degree of grinding of the mass are used. The output parameters are the grinding time, water retention capacity and average fiber length. The developed information system is a network web application with a modular structure. The modules are united by the main interface for the user. Each module implements a regression model for a specific type of headset. At the moment, the system has two modules for calculating the parameters of a percussion type headset and a headset with a curvilinear shape of knives. In the future, it is planned to add the ability to calculate indicators for headsets of other designs. It will also add the ability to solve optimization problems by finding the minimum or maximum value of the output parameters.
The Krasnoyarsk Territory and the Siberian region as a whole have the largest reserves of forest resources among the regions of Russia. However, the problem of rational and integrated use of forest resources is becoming more and more urgent. The presence of a large volume of unclaimed wood resources, including in the form of wood damaged by pests and forest fires, requires the development of methods that allow processing such wood using the optimal technology. Such research has been carried out by the scientific laboratory “Deep processing of vegetable raw materials” of the Reshetnev Siberian State University of Science and Technology. For information support of such studies, it is necessary to be able to assess the volume of damaged wood based on the forecast of the dynamics of processes affecting wood, taking into account external control influences. The aim of this work is to develop models and algorithms with which this forecast can be carried out. The article discusses the processes of the spread of pests and forest fires as objects of modeling, examples of such processes are considered. A method for describing the dynamics of distributed processes in the language of classical mechanics, as well as an agent-based simulation model of the dynamics and localization of the processes of the spread of insect pests and forest fires, is presented. The work of the model is based on GIS data and is reflected on a map of the real area. The model uses several types of agents that imitate both the process itself and the fight against it.
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