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It is found that the rotation of mode shape is a sensitive indicator of damage.
For each harmonic, including the fundamental, the mode shape is synthesized from the linear eigenmodes.
The proposed method is particularly efficient when a high resolution of mode shape is essential.
The FPM accuracy range for the frequency ω and the mode shape is less than 1% even for high heterogeneities.
The fundamental mode shape is approximated by means of polynomial co-ordinate functions which contain two exponential optimization parameters.
After determining the unknown Fourier coefficients, the corresponding mode shape is obtained by using the indirect boundary integral formulations.
Similar(30)
Vibration mode shape were analysed to find the total deformation value at surface of plate.
However, the effects of an oblique wing on lateral mode shape are relatively small.
To increase the sensitivity of the method, respective rotation mode shape was inputted to the wavelet.
The mode shape are normalized by dividing by their own maximum displacement.
(The 1st local mode shape was also illustrated in Fig. 2 which occurs at about 447 Hz).
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