Vibration mode analysis of drum
2016-08-23
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Modes are the natural vibration characteristics of structures, and each mode has a specific natural frequency, damping ratio and mode shape. These modal parameters can be obtained by calculation or experimental analysis, such a calculation or experimental analysis process is called modal analysis. If the analysis process is obtained by the finite element calculation method, it is called computational modal analysis; if the modal parameters are obtained by identifying the input and output signals of the system through the test, it is called experimental modal analysis. Generally, modal analysis refers to experimental modal analysis. Vibration mode is the inherent and integral characteristic of elastic structure. If the characteristics of the main modes of the structure in a certain frequency range are understood by modal analysis method, the actual vibration response of the structure under the action of various external or internal vibration sources in this frequency band may be predicted. Therefore, modal analysis is an important method for structural dynamic design and equipment fault diagnosis.
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drum
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