Estimation of track conditions on misalignment of rail lines using data of dynamic performance tests of freight cars
Journal Title: Технічна механіка, Техническая механика, Technical Mechanics - Year 2014, Vol 1, Issue 1
Abstract
А method of а qualitative assessment of the distorted rail lines of the railway track portions is proposed us-ing the results of dynamic running tests of freight cars. In the research methods of mathematical modeling and mathematical statistics, in particular a spectral analysis were used. Qualitative assessments of distortions of rail lines are proposed to compare variances and spectral densities of irregularities of the track calculated using experimental records of vertical accelerations of the bogie side frames over axle boxes and the tract transfer function of the side bogie frame and track with the basic variances and spectral densities of irregular portions of the track of known intensities. Examples of practical applications of this method of assessments are presented. The proposed method for processing the results of dynamic running tests will exclude those areas where intensities of irregularities are beyond the measured limit, and thus increase the accuracy of the experimental evaluation of the dynamic response of the vehicle.
Authors and Affiliations
L. Lapina, I. Mashchenko
Keywords
Related Articles
- EP ID EP356668
- DOI -
- Views 65
- Downloads 0
Analysis of ways and models of deployment of space tethered systems
Space tethered systems consisting of satellites conducting with flexible wires (tethers) can form the basis for advanced facilities for removing space debris from near-earth orbit. This raises the question of the deploym...
Analysis of use of aerodynamic systems to deorbit modular large-sized space objects from low near-earth orbits
This paper deals with the analysis of the feasibility of aerodynamic deorbiting systems (ADS) to deorbit modular large-sized space objects (MLSO) from low earth orbit. The objective of this paper is to study the feasi-bi...
Control of separation of air flow along cylinder using plasma actuators
The research aim is to develop an approach to modeling a dielectric barrier discharge when a plasma actua-tor is in a mobile continuous medium. Based on a physical model of the dielectric barrier discharge, the mathe-mat...
Explosion of launch vehicle during the flight: environmental aspects of aftereffects and their evaluation
Environmental aspects of the aftereffects of a launch vehicle explosion during the flight are examined. A methodic approach to predictable evaluations involving the characteristics of the dropping cloud in an explosion,...
Simulation of mechanical processes in systems and units of aerospace engineering products
The literature on the simulation of mechanical processes in systems and units of aerospace engineering products is reviewed. The increasing structural complexity of the simulated objects, the interdisciplinary nature of...