Design of mechanical components for Brushless DC Motor

Esmailian, Mojtaba; Boroumand, Farzad

doi:10.52547/masm.2.3.347

Design of mechanical components for Brushless DC Motor

Document Type : Original Article

Authors

Mojtaba Esmailian

Farzad Boroumand

Faculty of Mechanical, Malek Ashtar University of Technology, Iran

https://doi.org/10.52547/masm.2.3.347

Abstract

The purpose of this research is to design mechanical components for making a brushless direct current motor. One-piece rotor and shaft are used in the design of this engine, and the hollow rotor is intended to access the interior space and reduce weight. Considering the magnetic flux density and taking into account the required strength of the rotor to withstand loads, 52 St steel is used and high strength epoxy pipe glue is used to connect the magnet and the rotor. In order to check the strength of the engine, engine components including power transmission parts and engine installation components were analyzed. The effect of centrifugal force on the normal stress created on the rotor, the effect of the transmission torque from the rotor in creating torsional stress on the shaft, the amount of shear stress at the connection between the magnet parts and the rotor and the amount of stress on the base parts and the required screw force. were analyzed by Nastran software to restrain the force due to the weight of the engine on the engine support bases. According to the stress analysis of the rotor and shaft, by choosing St-52 steel for these parts, a reliability of 2.58 has been obtained. The analysis of the shear stress of the connection between the magnets and the rotor indicates the proper connection of these parts by the glue used in this research with an acceptable reliability of 1.61.

Keywords

Brushless DC Motor

Design of mechanical components

Static analysis

20.1001.1.27834220.1401.2.3.6.5

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