Complex mode evaluation method of finite element model with damping structure
A damping structure and finite element technology, which is applied in the field of complex mode evaluation of finite element models with damping structures, can solve the problems of not being able to reflect differences, being unable to accurately predict the dynamic response of finite element models, and having too many evaluation results
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[0079] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0080] The evaluation method of frequency and mode shape under complex mode mainly carries out the correlation evaluation and comprehensive evaluation of test and numerical calculation results from three aspects of complex frequency, complex mode amplitude and complex mode phase. The vibration amplitude and complex vibration phase are regarded as three influencing factors. Firstly, the correlation coefficients of the test and simulation results in the complex frequency, complex vibration amplitude and complex vibration phase are calculated respectively, and each influencing factor The correlation coefficient includes the results of the m-order mode, and then the evaluation results of each influencing factor are formed by taking different weights for each mode, and finally the final evaluation parameter is formed by taking different weights for the three influe...
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