Vibrations diagnostics and analysis in operator’s and passenger cabins of a suspended monorail

Kamil Szewerda, Jarosław Tokarczyk, Pavol Božek, Dariusz Michalak, Andrzej Drwięga

Vibrations diagnostics and analysis in operator’s and passenger cabins of a suspended monorail

Číslo: 2/2020
Periodikum: Acta Montanistica Slovaca
DOI: 10.46544/AMS.v25i2.2

Klíčová slova: mining, suspended monorails, vibrations, numerical analysis, dynamics, multibody simulation, exposure to vibrations, virtual prototyping

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Anotace: One of the negative factors affecting operators and passengers of

suspended monorails moving to their workplaces are the vibrations
that act on the entire human body. These vibrations are related to
the design of the suspended monorail and the route on which it
moves. Excessive exposure to this negative factor adversely affects
the human body. The results of numerical simulations aimed at
comparing the vibration level during travelling along a straight
section of the route, in which the operator's cabin and passenger
cabin were rigidly connected to the trolley and innovative design in
which yielding suspension was introduced are presented. Such
damping of vibrations acting on passengers significantly improves
the safety and comfort of miners in underground mining plants.
Application of the computational model presented in the article and
the method of analysing the results of the simulation enables
optimal selection of materials with appropriate damping
characteristics. A properly selected vibration damping system
increases the comfort of the operator and transported people, and
may become an element of competitive advantage when
benchmarking transportation systems with the same operating
parameters. The application of the proposed approach allows us to
optimise, in terms of costs, the selection process of the optimal
damping system, thanks to the possibility of verification of various
damping parameters, without the necessity to investing in the real
components and performing a real test, but only based on the results
of the multibody simulation. The use of these numerical simulations
is an example of a modern way of supporting the design and
perfecting processes of state-of-the-art machines used in
underground coal mines.