A Vibration Modeling and Analysis Method for Cracked Impeller Structure of Centrifugal Compressor
A centrifugal compressor and analysis method technology, applied in special data processing applications, instruments, electrical digital data processing and other directions, can solve the problems of high computing hardware level for statistical analysis, unacceptable time required for analysis, etc., to achieve optimal design, The effect of reducing degrees of freedom and reducing memory space
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[0113] This implementation case combines figure 2 The shown impeller model of a certain centrifugal compressor verifies the effectiveness of the invention, where 1 is the end cover, 2 is the blade, and 3 is the disc.
[0114] A centrifugal impeller structure is welded by end covers, blades and discs. According to engineering experience, fatigue cracks often appear at the welding position between the blades and the end cover on the outer edge of the intake end, and the cracks analyzed in this implementation case are located there. The analysis framework of the cracked impeller structure mainly includes three parts: pre-processing module, analysis module and post-processing module.
[0115] First, the finite element model of the entire impeller structure is obtained by means of rotational transformation, and then the calculation accuracy of the system reduced by the hybrid interface modal synthesis method is verified. When comparing the results, the analyzed object is the impe...
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