E_DT433 English

Braking Questions - Composite brake block contour optimisation to reduce equivalent conicity - Synthesis of phase 1 results

Ed. no.1 | March 2013

Available languages

German English French
Price €422.00 Tax included

€400.00 tax excl.

Several investigations into the service performance of composite brake blocks have shown that these blocks produce a wear pattern on the wheel profile that is different from the wear pattern produced by cast iron blocks. One of the effects is the increase of equivalent conicity, which is a parameter used in assessing the running stability characteristics of a vehicle. Equivalent conicity changes relatively fast, especially on certain blocks made of sintered material.

In previous investigations the idea had arisen that the contour of the brake block had a significant impact on the wear pattern of the wheel profile and thus it was expected that modifying the block shape would have beneficial effects for the wheel profile. Therefore, in the beginning of 2009 UIC decided to start a project to optimise the shape of the brake block in order to prevent increases in equivalent conicity.

This report seeks to describe and summarise the activities carried out in the first phase of the project and draw some conclusions. The goal of the first phase was to check:

  • whether the block shape did actually influence changes in the wheel profile, and
  • whether bench tests were a suitable approach for the remainder of the project.

The approach consisted in conducting a certain number of bench tests with several block shapes and qualities, and compare the results with available service data.





"+ "
ISBN978-2-7461-2170-6
Pages130
E_DT433-PDF

Data sheet

Language
English
Edition
Ed. no.1
Edition date
01/03/2013
Publication date
16/10/2013
Page number
130
Theme
Rolling stock Matériel Roulant
sku
E_DT433
Reference
B 126 / DT 433