Thin plate vibration optimization method and device

Abstract

The embodiment of the invention provides a thin plate vibration optimization method and device, and the method comprises the steps: building an initial thin plate model, dividing the initial thin plate model into a plurality of different regions, and presetting a corresponding thickness initial value for each region; thirdly, performing modal analysis on the initial thin plate model to obtain initial vibration data; then, iteratively processing the thickness initial value of each region through a genetic algorithm taking a preset thickness range as a constraint, obtaining a target thickness value and a target thin plate model of each region when a preset optimization target is met, and then performing modal analysis on the target thin plate model to obtain target vibration data; and finally, obtaining a vibration optimization result according to the initial vibration data and the target vibration data. The thin plate is subjected to vibration optimization by changing the thickness values of different areas of the thin plate, the inherent frequency of the thin plate can be improved under the condition that the overall mass of the thin plate is not changed, and then the resonance situation is reduced.

Description

technical field [0001] The invention relates to the technical field of thin plate structures, in particular to a thin plate vibration optimization method and device. Background technique [0002] The thin plate structure is a common basic structure, which is widely used in mechanical engineering. The common thin plates can be divided into two types: constant thickness thin plates and variable thickness thin plates. [0003] Among them, the variable thickness design of thin plates is of great significance to many practical projects. In mechanical engineering, the variable thickness design of parts can improve material utilization and lightweight design, but the variable thickness design of existing parts exists More vibration problems will resonate with other components. Contents of the invention [0004] The embodiment of the present invention solves the technical problem in the related art that the natural frequency of the thin plate is low and resonance is easy to occur...

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Problems solved by technology

[0004] The embodiment of the present invention solves the technical problem in the related art that the natural frequency of the thin plate is low and resonance is easy to occur by providing a thin plate vibration optimization method and device

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