What type of study is this?

September 5, 2025Open Access

Modelling of Stress and Deformation of Interior Permanent Magnet Integrated Motor for Ball Mill Considering Rotor Eccentricity

JGJun GaoNanjing University of Aeronautics and Astronautics XHXueyan HanChangchun University of Science and Technology ZAZhongliang AnShenyang University of Technology

Key Points

The analytical approach predicts rotor stress and deformation in IPMIM accurately under eccentric conditions.
Results indicate a strong correlation between analytical solutions and finite element method outcomes, enhancing reliability.
Eccentricity types considered were parallel, inclined, and composite, demonstrating varied effects on rotor integrity.
Exploration of magnetic tensile stress guides understanding of the structural impact on rotor performance.

Abstract

ABSTRACT The interior permanent magnet integrated motor (IPMIM) for ball mill has complex eccentricity problems. In order to solve the difficult problem of calculating the strength and stiffness of IPMIM in eccentric state, a mathematical model under eccentricity was established. Analytical solutions for the rotor stress and deformation were respectively derived for parallel eccentricity, inclined eccentricity, and composite eccentricity. By using the analytical solutions and finite element method, the stress and deformation of the rotor for IPMIM with a power of 210 kW were analysed. The results show that the calculation results obtained by two methods are highly consistent, which proves that the analytical solutions can accurately predict the stress and deformation of the rotor of IPMIM for ball mill. In addition, based on the analytical modelling, the influence of magnetic tensile stress and structural parameters on the rotor stress and deformation were explored, aiming to summarise the variation laws of the stress and deformation of the rotor.

Ask AI

Helpful

Bookmark

View Full Paper