Diagnosis**
Ansys Modal Analysis Reactor Fatigue Wear-
Introduction
Through the analysis of ANSYS finite element vibration monitoring, the location and cause of the fault were quickly locked, which avoided the loss of unplanned downtime and improved economic benefits for an enterprise.
Let's take a look back at the whole process of this case!
1. Device information
The basic part of the entire reactor drive mechanism of an enterprise is composed of three structural parts, and the actual vibration monitoring horizontal position data exceeds the standard. Structural parts 1 and 3 are the main supporting structures of the reducer and the motor, and the structural parts 2 play the role of linking between the two, and the three cooperate to form the structure of an arched door.
01.The name of the device.
Stirring tank. 02.Mechanical structure of the equipment.
Motor - reducer - stirring tank.
2. Modality**
From the structural point of view, the vertical position of the whole structure is rigid, and the horizontal displacement and horizontal torsional stiffness are poor.
Using the ANSYS modal**, we can see that the structure in Figure 1 has the following three main modes:
Left and right swing mode, **screenshot is below:
Forward and backward swing mode, **screenshot below:
Twist the modal, ** screenshot below:
3. Conclusions and recommendations
Diagnosis:The existence of a window in the horizontal radial direction of the lower supporting structural member of the reducer leads to the poor stiffness of the supporting structure in this direction, and the dynamic center deviation between the motor and the reducer at the same time triggers the excitation force of the motor frequency, and the two factors lead to the serious exceedance of the vibration of the reducer in the horizontal radial direction. The large three-direction vibration value of the motor drive end is indirectly caused by the large vibration of the reducer.
Diagnostic recommendations:Through the ** results know that the motor base needs to be reinforced, the following is a screenshot of the ** animation after reinforcement:
In this case, the optimal reinforcement method was found through finite element simulation as technical support.