At present, ultrasonic vibrating screen has been widely used in coal, metallurgy, mining, chemical and road construction industries at home and abroad.

With the rapid development of economy and the progress of science and technology, industrial enterprises urgently need large-scale ultrasonic vibrating screens for efficient screening, dehydration and media removal. At present, the development of ultrasonic vibrating screening equipment has tended to be large-scale, high vibration intensity and light-weight (reducing the vibration quality).

Because the large-scale and standardization of the ultrasonic vibrating screen can reduce the variety and quantity of equipment, thereby reducing the purchase equipment and thus reducing the cost of purchasing equipment and management and maintenance costs.

Therefore, the development level of large-scale ultrasonic vibrating screen can reflect the level of scientific and technological development of a country in this field, but the increase of the structure of ultrasonic vibrating screen also requires the corresponding increase of its vibration intensity, and the dynamic load on the box of ultrasonic vibrating screen also increases.

As a result, the structural rigidity and strength of the screen body are insufficient, resulting in excessive deformation of the screen body, cracking of side plates, beams and welds, which seriously reduces the service life of the screening machinery. Especially when the structure is in resonance, the dynamic load and corresponding dynamic stress of the screen body will obviously increase.

Therefore, it is necessary to carry out dynamic characteristic modal analysis and dynamic stress analysis on the ultrasonic vibrating screen to prevent the service life of the ultrasonic vibrating screen from being greatly reduced due to resonance.