Motor NVH simulation
Ansys solutions for acoustics provides a complete multiphysics workflow for e-motor noise, vibration and harshness (NVH). Motor NVH simulation.
1) Maxwell imports motor model modeling, radial electromagnetic force discussion and analysis
2) Acceleration condition equivalent sound power radiation noise calculation
3) Motor housing modal analysis
Model + operation details
Motor NVH (Noise, Vibration, and Harshness) refers to the noise, vibration, and discomfort generated by the motor during operation. Simulation is a common analysis and solution for motor NVH issues. This article will focus on motor NVH simulation and introduce related content such as Maxwell import motor model modeling, radial electromagnetic force analysis, acceleration condition equivalent sound power radiation noise calculation, and motor housing modal analysis.
First of all, Maxwell is an electromagnetic field simulation software based on the finite element method, which can help engineers to model and analyze the electromagnetic characteristics of the motor. In the motor NVH simulation, Maxwell can import the motor model for modeling and analysis. By analyzing the electromagnetic force of the motor through Maxwell, we can understand the radial electromagnetic force generated by the motor during operation. The radial electromagnetic force is one of the important factors causing motor vibration and noise, so studying and analyzing it is of great significance to solve the motor NVH problem.
Secondly, the calculation of equivalent sound power radiation noise under acceleration conditions is another key step in motor NVH simulation. During motor operation, the vibration of the motor will trigger sound waves in the air, thereby generating noise. By simulating and analyzing the motor vibration under acceleration conditions and combining it with acoustic theory, the equivalent sound power radiation noise generated by the motor under acceleration conditions can be calculated. This has a certain reference value for evaluating the noise level of the motor in the actual working environment and optimizing the motor design.
In addition, motor housing modal analysis is also an important part of motor NVH simulation. The motor housing is the external structure of the motor, and its inherent characteristics will affect the vibration and noise of the motor. By performing modal analysis on the motor housing, its vibration characteristics and modal forms at different frequencies can be understood. This helps design engineers to make reasonable designs in terms of motor housing structural optimization to reduce unnecessary vibration and noise.
In summary, motor NVH simulation is one of the effective ways to solve motor noise, vibration and discomfort problems. Technologies such as Maxwell importing motor model modeling, radial electromagnetic force analysis, acceleration condition equivalent sound power radiation noise calculation, and motor housing modal analysis play an important role in motor NVH simulation. Through the application and research of these technologies, the working efficiency of the motor can be improved, the noise and vibration levels can be reduced, and the overall quality of the product can be improved.
It should be noted that this article aims to introduce the motor NVH simulation related technologies in detail, provide operation guidelines and theoretical analysis, and does not discuss after-sales issues. Readers who are interested in motor NVH simulation can apply this technology to actual projects through learning and practice, and further improve their own technical level and problem-solving ability.
Finally, I hope this article can help readers understand motor NVH simulation technology and master related operations and analysis methods. Through continuous learning and practice, we can continue to innovate in the motor field and contribute to the progress and development of society.
[Note: The content of this article is for reference only. If you need specific operation guidance and detailed analysis, please refer to relevant technical documents and reference materials]
