The finite element method is a modern calculation method rising with the development of computers
The main analysis means is to convert the research object into a mathematical model approximate to the original structure through discretization, and then solve the numerical calculation method of stress, strain, displacement and other parameters through a series of standardized processing.
Vibrating Screen modal analysis is the most basic content of various dynamic analysis types. It is used to determine the natural frequencies of components, which can enable designers to avoid these frequencies or minimize the
Excitation, so as to eliminate excessive vibration. The vibration characteristics of the structure determine the response of the structure to other dynamic loads. Therefore, in general, modal analysis is required before other dynamic analysis.
The natural frequencies and vibration modes of the positive symmetrical structure of the high-frequency dewatering screen are calculated to obtain the first 30 natural frequencies and vibration modes of the positive symmetrical structure, of which the first 3 are rigid body vibration modes and the last 27 are elastic vibration modes.
There are frequencies and corresponding vibration forms, and the vibration modes of the fourth to ninth order positive symmetric constraints are given. It can be seen from the data that the fourth order natural frequency of the high frequency dehydration screen under the positive symmetrical constraint is 107.58HZ.
It is known that the working frequency of high-frequency dewatering screen is 24Hz, with a frequency difference of 4.48 times, so resonance is not easy to occur.