Detection analysis method of finite element vibration characteristics of metal corrugated pipe

Abstract

The invention relates to a detection analysis method of the finite element vibration characteristics of a metal corrugated pipe, and belongs to the technical field of detection analysis. The method comprises the following steps of parameter acquisition, single wave modeling, unit solving and unit overlaying, firstly breaks up the whole into parts and gathers parts into a whole so as to obtain the dynamic characteristics, which include the mode of vibration and the natural frequency, of the whole metal corrugated pipe. Since the method has a reliable theoretical basis, obtained desired result data exhibits enough accuracy. Meanwhile, the detection analysis method is adopted to greatly reduce the degree of freedom of the structure of the corrugated pipe so as to greatly lower the total data and the operation workload of an operational matrix. When finite element analysis is carried out in virtue of a computer, on the premise that an ideal detection analysis result of the metal corrugated pipe guarantees to be obtained, the operation time and the error rate of the computer are obviously lowered, and the working efficiency of the computer is greatly improved.

Description

technical field [0001] The invention relates to a metal bellows detection and analysis method, in particular to a metal bellows finite element vibration characteristic detection and analysis method, which belongs to the technical field of detection and analysis. Background technique [0002] Metal bellows expansion joint is a flexible, thin-walled, elastic element with transverse corrugations, which can absorb the dimensional changes of pipelines, conduits or containers due to thermal expansion and contraction, and can also be used for vibration isolation under special conditions. and noise reduction occasions. If the natural frequency of the bellows is close to or consistent with the vibration frequency of the pipeline system, it will cause resonance, which will affect the stability of the entire pipeline system and even cause damage to other important equipment. Therefore, it is necessary to analyze the natural frequency of the bellows. [0003] The methods for studying ...

AI Technical Summary

Problems solved by technology

This not only requires high technical analysis personnel's business ability and computer performance, but also because the modeling workload of the special structure of the bellows is very heavy, even with the help of a high-performance computer, it will take a long time to get the analysis results. Very inconvenient and prone to running errors during the process

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