The performance of the shaker table directly affects the test results.This study aims to design the extended tabletop for the SAI60-H560B-16/LP electric shaker to solve the problems of the original tabletop's low first-order resonance frequency and small effective use area.Two extended tabletop sizes were proposed,700 mm×700 mm and 1 000 mm×1 000 mm,respectively.ANSYS modeling was used to calculate the first 20 resonance frequencies of the extended tabletop and the equivalent von Mises stress under sinusoidal vibration loads;physical tests were conducted on the first-order resonance frequency and acceleration uniformity of the extended tabletop.The results show that the first-order axial resonance frequencies of the two-sized extended tabletops are higher than that of the original tabletop,and the equivalent von Mises stress is less than the fatigue strength;the root mean square acceleration measured at 5 control points meets the target value.The research findings provide a reference for the optimization design of extended tabletops for other vibrators.
维普
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