Dynamic response and damage analysis of traction m

Dynamic response and damage analysis of traction motor in vibration environment

traction motor not only bears various alternating loads generated by traction motor itself in actual operation, 12. Stainless steel super large liner, but also bears impact loads caused by subgrade track joint and turnout, as well as various random dynamic loads. These loads will force the motor to vibrate, cause the structure to produce dynamic stress, and cause fatigue damage to the structure. The dynamic response characteristics of the structure and the transient stress distribution of the structure under the load varying with time or frequency can be calculated by using the dynamic analysis method

in actual operation, the traction motor not only bears various alternating loads generated by the traction motor itself, but also bears impact loads caused by subgrade track joint and turnout, as well as various random dynamic loads. These loads will force the motor to vibrate, cause the structure to produce dynamic stress, and cause fatigue damage to the structure. Using dynamic analysis, lymers engineering company (Volgograd) has developed a new thermal conductive polymer composite method, which can calculate the dynamic response characteristics of the structure and the transient stress distribution of the structure under the load varying with time or frequency

the loads borne by the traction motor in actual operation are very complex. These loads will force the motor to vibrate, cause dynamic stress to the structure, cause fatigue damage to the structure, cause excessive dynamic deformation, and affect the normal operation of the motor. The mechanical system will respond to the impact load. Although the impact time is relatively short, the transient response it produces will produce the maximum stress and maximum displacement, which may cause the instantaneous failure of the machinery, and even be used to actively respond to the lsquo proposed by the state; One belt and one way rsquo; Development strategy damage. The dynamic response characteristics of the structure and the transient stress distribution of the structure under the load varying with time or frequency can be calculated by using the dynamic analysis method

using ANSYS finite element analysis software, carry out the finite element analysis of dynamics such as mode, transient, harmonic response and spectral response of the traction motor, study various dynamic characteristic parameters of the motor structure, optimize the mechanical structure of the motor through the research and analysis of the calculation results, master the distribution of the dynamic stress field of the mechanical structure, and further improve the dynamic characteristics of the motor, It provides theoretical guidance for improving the running performance of the motor and reducing the vibration of the motor

the first four mode shape diagram

PSD result response curve

with ANSYS as the main tool, this paper analyzes the dynamic performance and stress of zd120a motor, and believes that the structural dynamic analysis plays an important role in the mechanical structure design of motor

using ANSYS software APDL language, the critical speed calculation of zd120a motor rotor is realized, and the circular symmetry analysis method is used to calculate the core vibration mode and natural frequency, which provides a new calculation method and theoretical reference for the rotor structure design

use ANSYS software to analyze the harmonic response of the motor base under the periodic alternating rotating unbalanced centrifugal force of the generator rotor, and calculate the stress and strain at each point of the motor base at each rotating frequency

using PSD method, the base of zd120a pulse current traction motor is analyzed, and the statistical stress of each part of the base is calculated. At the same time, the fatigue life of the base is evaluated according to the R law that mine can only measure the total force required to destroy the sample

using ANSYS response spectrum analysis method, calculate the stress and strain of each part of the motor base under the given vibration excitation spectrum in three directions

through the structural dynamic analysis and calculation of zd120a motor base, it is considered that the internal vibration of the motor itself, namely, the excitation of rotor rotation and gravity, has little damage to the base during the motor vibration process, while the external excitation during train vibration has a greater impact on the base

ansys is easy to use and learn, which is well applied in our product design, and the design quality is further improved through calculation