Сomparative analysis of trilank road trains of different component schemes for stability of straight line traffic

  • Volodymyr SAKHNO Doctor of Technical Science, Professor, Head of Automobiles Department, National Transport University https://orcid.org/0000-0002-5144-7131
  • Igor MUROVANYI PhD. in Engineering, Assoc. Professor, Dean of the Faculty of Transport and Mechanical Engineering, Lutsk National Technical University https://orcid.org/0000-0002-9749-980X
  • Oleksiy PALAMARCHUK magistr of transport, National Transport University, postgradiate student of Automobiles Department
  • Roman HOROSHUN magistr of transport, National Transport University, postgradiate student of Automobiles Department
DOI: https://doi.org/10.36910/automash.v2i21.1224

Abstract

Today, in the EU countries, three-link road trains of various layout schemes are used, in particular fifth-wheel trailers, trailed ones on a dolly and the B-Dauble type. The total weight of such road trains is the same and is at the level of 60 tons, and the length is up to 26 m. This is due to a number of advantages of three-link road trains compared to two-link ones. However, the possibility of using such road trains must be confirmed not only by transport legislation, but also by solving certain technical problems aimed at ensuring, first of all, the safety of their movement with sufficiently high productivity. The safety of using such road trains is primarily related to the stability of their movement. A comparative assessment of such road trains in terms of traffic stability can be the basis for choosing the best layout scheme among three-unit road trains when introducing them into operational practice in Ukraine. The choice of the layout diagram of a three-link road train of the "B-Double" type is justified, since by changing the mass and geometric parameters in the system of equations describing the stationary motion of this particular road train, all other layout diagrams can be brought to the chosen one. The results of the analysis of stationary motion showed that the three-link road train "B-DUBLE" has a higher critical speed of straight-line motion and a lower tendency to oscillatory instability compared to a trailed road train on a bogie and a fifth-wheel trailer train. However, the stability of three-link B-Double road trains largely depends on their mass-geometric characteristics, such as the position of the center of mass, radii of gyration and the relative position of coupling points between parts of the road train. These factors are important to consider when designing and operating such road trains.

Key words: three-link road train, layout diagram, equation of motion, critical speed, speed of appearance of oscillatory instability

Published
2023-11-28
How to Cite
SAKHNO, V., MUROVANYI, I., PALAMARCHUK, O., & HOROSHUN, R. (2023). Сomparative analysis of trilank road trains of different component schemes for stability of straight line traffic. ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT, 2(21), 186-197. https://doi.org/10.36910/automash.v2i21.1224
Issue
Vol 2 No 21 (2023): ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
Section
Статті