从损伤云图来看，疲劳损伤容易发生在2个固定安装脚附近，损伤最严重的区域

From the cloud point of view damage, prone to fatigue damage in the vicinity of the two fixed mounting feet, the most severe damage to the region near the bird without reinforcing rib feature of the mounting foot, the foot away from the mounting of the mass concentrated near magnets minimal damage to <br><br>structural resonances in dynamic under external load, the overall balance inertia force of the phenomenon and the external force, the elastic force and damping force, which is characterized by an inertial force and modal damping force generating structure. preventing vibration fatigue focus mainly to reduce the vibration level of the structure, in particular local vibration level based on the mode shape trend applied to other distribution control mode to affect the structure increasing the damping or partial structure, for sheet metal cone frame structure need to avoid pure flat characteristics should be similar increase rib boss increased structural rigidity and vibration characteristics of the male flange has grooves or the like, taking care to eliminate sheet defects and reduce stress concentrations Section issues

From the damage cloud map, fatigue damage is easy to occur near 2 fixed mounting feet, the most serious damage area near the installation foot without reinforced hamstring characteristics, away from the installation foot quality is more concentrated near the magnet damage is minimal<br><br>Structural resonance is a comprehensive balance between external forces and structural inertial forces, elastic forces and damping forces under the dynamic external load. It is characterized by modal inertial and damping forces in the structure. The focus of preventing vibration fatigue is mainly to reduce the level of structural vibration, especially local vibration level. According to the trend of modal vibration. The distribution characteristics of adding damping to local structures or applying other control techniques to influence the structure mode. For the sheet metal structure of the basin frame. Pure plane features need to be avoided. The flip-side grooves increase the characteristics of structural stiffness and vibration almanence, while paying attention to the elimination of defects in the material and the reduction of stress concentration.

From the damage nephogram, the fatigue damage is easy to occur near the two fixed mounting feet. The area with the most serious damage is close to the mounting foot without stiffener feature, and the area far away from the magnet with concentrated mounting foot mass is the least damaged<br>Structural resonance is a comprehensive balance phenomenon of external force and structural inertia force, elastic force and damping force under the action of dynamic external load. It is characterized by the occurrence of modal inertia force and damping force in the structure. The focal point to prevent vibration fatigue is to reduce the level of structural vibration, especially the level of local vibration. According to the trend of modal vibration, increase damping or apply other control technologies to local structures The distribution characteristics of structural modes are affected. For the plate structure of the basin frame, it is necessary to avoid the pure plane features. It is necessary to increase the structural stiffness and vibration features such as the flanging groove of the rib boss, and pay attention to the elimination of material defects and the reduction of stress concentration<br>