Analytical model of mechanical properties of carbon fiber magnetic powder film-level magnetic materials for high-speed motors

The speed of high-speed permanent magnet motor has always been restricted by the strength of the rotor. Therefore, this paper proposes a type of magnetic composite rotor suitable for high-speed permanent magnet motors, which can fundamentally solve the problem that it is easy to cause damage for permanent magnets in high speed. In this paper, a combination of theoretical calculation, numerical simulation and experimental verification are used for the magnetic composite material. Based on the theoretical model of the composite micromechanics rule of mixture method, the mechanical properties of the three-phase magnetic composite material are successively deduced. The calculation model of magnetic composite material was compared by using the finite element method and the analytical method, the experimental result was used to verify the correctness of the calculation results. Finally, the influence of carbon fiber thickness and magnetic powder content on the mechanical properties of the material was studied.