An Analytical Method for Calculating the Natural Frequencies of the Cab Carrier Systems Vibrations of Transport and Technological Machines

Abstract

AbstractThe article presents a methodology for calculating the resonant frequencies of the carrier systems of transport and technological machines in the places where the cabs are installed to ensure the standardized requirements for the comfort and habitability of operators’ workplaces. On the example of combine harvesters, the relevance of the direction of accounting for the dynamic characteristics of the carrier systems, which structurally represent cantilever-fixed profile beams of complex shape, is substantiated. The two most common structural system designs of the carrier system are mathematically described, which are a beam with embedded one or both ends. The mathematical dependencies obtained laid the base for the study of natural frequencies of beams vibrations of the carrier systems. Having compared the results of calculations and bench tests of the cantilever cab carrier system with one end embedded of a combine harvester, we present the results of the verification of the calculation method proposed. A high convergence of the calculated and experimental data when determining the natural vibration frequencies of metal structures is shown.KeywordsCombine harvesterStructure resonancesCarrier systemResonance calculationSuspension systemCab vibration protection