English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

With the continuous improvement of train speed, disc braking are widely applied due to its high-power of braking, reliable working, etc. In this paper, relative wind speed of different locations on the brake disc surface during braking has been calculated, and the equivalent wind speed coefficient k is given, which is the ratio of relative wind speed and train speed. On this basis, the convection coefficient of the brake disc surface has been optimized. Its value has been reduced comparing to that before optimization. Combining the optimized convection coefficient and using finite element software ANSYS, it calculated the temperature field of brake disc based on the three-dimensional model in the emergency braking condition, the result and that before optimization were compared with experimental data.

Heat Simulation of High-speed Train’s Brake Disc Considering the Wind Speed of Disc Surface Influence on Convection Coefficient