Optimization Design and Experimental Verification of the Structure of the Vibrator's Extended Tabletop
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.
万方数据
维普
