Bass, K. M.; Plakhotnik, V. V.; Krivda, V. V.
July 2013
Scientific Bulletin of National Mining University;2013, Issue 4, p59
Academic Journal
Purpose. Research of dynamics and pull-speed characteristics during the process of dump truck movement. Methods. There were used general scientific as well as special methods of research in current paper. They include scientific synthesis, integrated assessment methods of technical level, mathematical modeling and apparatus of linear programming. The solution of this problem is based on the composing of differential equation of motion, for which it was used the Lagrange equation of the second order, and appropriate expression of the kinetic, potential energy and dissipation function. The results are obtained by mathematical calculations in the software for mathematical analysis and calculation – "Wolfram Mathematica". Result. The article is going about the mathematical model of the linear movement of career dump truck as a multimass system with eight degrees of freedom on a linear track, accounting for the road covering conditions. The method for calculation pulling and dynamic characteristics of dump truck movement on the road with longitudinal gradient is obtained. It allows to receive required traction force. Originality. It was compiled a calculation scheme and equations of motion in rectilinear vehicle's motion, which includes elastic-dissipative characteristics of ties, longitudinal incline and road profile, changing of mechanical characteristics that are similar to real exploitation indexes of career dump truck and indexes of traction performance. Practical value. The evaluation method of the dynamical characteristics of the dump truck while driving regime is described. The analysis of dump truck design parameters, basing on which it is possible to give the recommendations on reduction of capital costs on development of the open mines.


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