Combined dynamic vibration absorber optimization method and system, terminal equipment and storage medium

Abstract

The invention discloses a combined dynamic vibration absorber optimization method and system, terminal equipment and a storage medium. The combined dynamic vibration absorber optimization method comprises the stepsof establishing a combined dynamic vibration absorber model provided with dynamic vibration absorbers of the same number and the same type; under the same optimization constraint condition, simulating and analyzing a main system amplitude-frequency response result according to five combined modes of four parameters including the mass of the dynamic vibration absorber, the rigidity ofthe dynamic vibration absorber, the damping of the dynamic vibration absorber and the damping rate of the dynamic vibration absorber; obtaining an optimal combination mode in the five combination modes based on a principle of minimizing a maximum power amplification coefficient minimum value of a main system; obtaining the optimized spring rigidity of each dynamic vibration absorber according tothe optimal combination mode; and selecting an optimized dynamic vibration absorber corresponding to the optimized spring rigidity. The optimization and selection of the targeted combined dynamic vibration absorber of different main systems are realized, and further reference is provided for the engineering design and application of the combined dynamic vibration absorber.

Description

technical field [0001] The invention belongs to the technical field of optimization of combined dynamic vibration absorbers, and more specifically relates to an optimization method, system, terminal equipment and storage medium of combined dynamic vibration absorbers. Background technique [0002] At present, dynamic vibration absorbers have been widely used in structural vibration control. However, the research results show that when the frequency band of the external excitation force received by the system is very narrow, the vibration reduction effect of the dynamic vibration absorber is very good; when the frequency band of the external excitation force is wide, the vibration reduction effect of the dynamic vibration absorber is significantly reduced. Therefore, when the dynamic vibration absorber is used for structural vibration control, its effective frequency band is narrow, the control effect is unstable, and the realizability is poor. [0003] In practical engineer...

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Problems solved by technology

However, increasing the damping in order to broaden its vibration reduction frequency band will affect the overall vibration reduction effect. In addition, it is often unacceptable to increase the mass ratio too much (the mass ratio is generally not more than 0.05).

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