System for measurement of interaction forces between wheel and rail for railway vehicles

Abstract

Abstract. Determination of the interaction forces between wheel and rail of railway vehicles is essential for assessment of the vehicle dynamic characteristics from point of view of running safety and rail loading the vehicle and alignment them to the Technical Specification for Interoperability. The direct measurement of transverse and vertical interaction forces using the existing full-disk wheel is practical impossible due to the impossibility of separating the two types of forces. To avoid this impediment it was realized a measuring wheelset fitted with 12 spokes achieved as force transducers for measur the vertical forces and 12 spokes achieved as force transducers for measur the transverse forces. The measuring wheelset was calibrated as a force transducer and was used to determine the wheel and rail interaction forces for LE-MA 6000kW electric locomotive by Softronic Craiova. rticle presents the measuring wheelset, the calibration principle and the calibration characteristics as well as time history of the main parameters running safety and rail loading, determined in the on-track tests.

Use of the experimental modal analysis for analytical lifetime estimation of a bogie frame

“…Equation (1) shows the general form of the system moving equation for the time domain, and equation (2) shows the general form of the moving equation for the frequency domain [1].…”

“…In order to determine these loads, within Softronic was developed a measuring wheel set for measurement of wheel-rail interaction forces. With the LEMA 6000 kW locomotive equipped with the measuring wheel set were carried out several on-track tests to determine the time history of wheel-rail interaction forces, results being saved in the data files [2,3].…”