Abstract
There are quite a lot of problems in friction brake like squealing, peddle pulsation, structural failure due to high heat, circular plate distortions. Hence, the present work tries to focus on developing no contact brakes by applying induced magnetization principles. Aluminum circular plate along with Neodymium – Iron – Boron (NdFeB) rare earth magnets are chosen for the work. Thickness of circular plates considered are 4, 6 and 8 mm. Chosen Aluminum circular plates are rotated at velocities of 20.94 m/s, 31.39 m/s, 41.89 m/s and 52.36 m/s. Considered brake parameters are brake deceleration, time elapsed for braking and stopping distance. In solitary magnet situation under steady application, aforesaid brake parameters are inferior as compared to those in solitary magnet with swift application situation. Brake parameters were found to be quite superior in 4 mm thick circular plate in solitary magnet with swift application. Considering the parameters such as time elapsed for braking and stopping distance, no contact brakes with permanent magnets are very suitable for top velocity rail applications.
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