Authors: S.V. Doronin, A.A. Alshanskaya, Т.А. Gerasimova

Title of the article: Multilevel digital models of the loads on the load bearing structures of the working equipment of the quarry excavator

Year: 2022, Issue: 2, Pages: 58-65

Branch of knowledge: 05.05.06 Mining machines

Index UDK: 621.879:519.876.5

DOI: 10.26730/1816-4528-2022-2-58-65

Abstract: A multi-level approach is proposed for evaluating the loads of the load bearing structures of a guarry excavator based on a sequential numerical analysis of structurally and geometrically non-linear bar models of metal structures and working equipment. Three-dimensional linear models of welded nodes and physically non-linear component models. The loading characteristics are digitized as a result of multi-variant computational experiments on the analysis of stress-deformed state of structures for discrete positions of working equipment in space and discrete values of ground resistance to digging. Digital load models are structured datasets of force factors operating in all elements of the structure, components, components, machine joints in the discretized positions of the working equipment and the ground resistance to digging. In order to provide information support for the life cycle using multilevel digital load models, prerequisites have been created for the implementation of an individualized approach to the justification of calculated load cases for each node, to obtain estimates and ensure the strength of welds, to predict the build-up of damage and to predict the residual life of individual parts to control the condition. The implementation of this approach is aimed at reducing the number of failures and accidents and increasing the reliability of the fleet of excavators.

Key words: guarry excavator working equipment load digital models system approach

Receiving date: 14.12.2021

Approval date: 15.03.2022

Publication date: 15.05.2022

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