Abstract
Based on the principle of signal decomposition, the law of kurtosis transmission between non-Gaussian excitation signal and structural response signal is studied, and the inherent relationship between the kurtosis of decomposed signal of excitation and response is found. On the basis of this relationship, a novel excitation signal generation technology for accelerated random vibration fatigue testing is proposed, which has been verified by simulation and experiment. The results show that excitation signal generated by this method can obtain the required high kurtosis response signal for accelerated random vibration fatigue testing, which can effectively reduce the time of accelerated life testing.
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