Investigating the Effect of Embossing and Restoration Process on The Natural Frequency of Rectangular Plate

In this work, the effect of embossing and restorating dimples on the fundamental natural frequency for a fully clamped rectangular AL1060 plate was experimentally and numerically studied. The FE simulation software DEFORM 2D was used to analyze the plate behavior during the embossing and restoration process while SolidWorks 2018 was used to conduct the vibration analysis. It was found that the plate fundamental frequency is affected by different parameters of embossing and restoration process such as diameter, height, number, location, and orientation of the restorated embossed dimples. Increasing the restorated dimple diameter and embossing height increases the fundamental frequency, an increment of 3.66% in the fundamental frequency can be achieved when locating a single restorated dimple at the plate center. Increasing the number of restorated embossed dimples from 4 to 9 increases the fundamental frequency from 12.69% to 23.54% respectively. For multiple restorated dimples, distributing these restorated dimples near the clamped edges as close as possible increases the fundamental frequency.